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ZXWN MGWMedia Gateway
Hardware Description
Version 3.07
ZTE CORPORATION ZTE Plaza, Keji Road South, Hi-Tech Industrial Park, Nanshan District, Shenzhen, P. R. China 518057 Tel: (86) 755 26771900 800-9830-9830 Fax: (86) 755 26772236 URL: http://support.zte.com.cn E-mail: [email protected]
LEGAL INFORMATION Copyright © 2006 ZTE CORPORATION. The contents of this document are protected by copyright laws and international treaties. Any reproduction or distribution of this document or any portion of this document, in any form by any means, without the prior written consent of ZTE CORPORATION is prohibited. Additionally, the contents of this document are protected by contractual confidentiality obligations. All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTE CORPORATION or of their respective owners. This document is provided “as is”, and all express, implied, or statutory warranties, representations or conditions are disclaimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose, title or non-infringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance on the information contained herein. ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subject matter of this document. Except as expressly provided in any written license between ZTE CORPORATION and its licensee, the user of this document shall not acquire any license to the subject matter herein. ZTE CORPORATION reserves the right to upgrade or make technical change to this product without further notice. Users may visit ZTE technical support website http://ensupport.zte.com.cn to inquire related information. The ultimate right to interpret this product resides in ZTE CORPORATION.
Revision History
Date Revision No. Serial No. Edition
Feb. 4, 2008 R1.0 sjzl20080194 First edition
ZTE CORPORATION Values Your Comments & Suggestions! Your opinion is of great value and will help us improve the quality of our product documentation and offer better services to our customers.
Please fax to (86) 755-26772236 or mail to Documentation R&D Department, ZTE CORPORATION, ZTE Plaza, A Wing, Keji Road South, Hi-Tech Industrial Park, Shenzhen, P. R. China 518057.
Thank you for your cooperation!
Document Name ZXWN MGW Media Gateway Hardware Description
Product Version V3.07 Document Revision Number R1.0
Serial No. sjzl20080194 Equipment Installation Date
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Contents
About This Manual ............................................................ i
Purpose................................................................................ i Intended Audience ................................................................. i Prerequisite Skill and Knowledge .............................................. i What is in This Manual............................................................ i Conventions......................................................................... ii How to Get in Touch............................................................. iii
Declaration of RoHS Compliance..................................... v
Chapter 1.......................................................................... 1
MGW Cabinet.................................................................... 1
Overview .............................................................................1 MGW Cabinet Structure .........................................................1 Cabinet Cabling ....................................................................6 Technical Indices ..................................................................8
Chapter 2........................................................................11
Shelves and Busbar .......................................................11
Overview ........................................................................... 11
Power Distribution Shelf ................................................. 12
Fan Shelf ..................................................................... 14
Service Shelf ................................................................ 15
Hardware Structure............................................................. 15 Service Shelf Type .............................................................. 18 Typical Configuration........................................................... 19 Communication Relationship................................................. 20 DIP Switches on Service Shelf Backplane................................ 20
Control Shelf ................................................................ 22
Hardware Configuration ....................................................... 22 Functions and Principles....................................................... 24 Backplane.......................................................................... 25
Resource Shelf ............................................................. 26 Hardware Configuration........................................................27 Functions and Principles .......................................................29 Backplane ..........................................................................31
GE Switching Resource Shelf .......................................... 32 Hardware Configuration........................................................33 Functions and Principles .......................................................36 Backplane ..........................................................................38
Level-1 Switching Shelf.................................................. 39 Hardware Configuration........................................................40 Functions and Principles .......................................................41 Backplane ..........................................................................42
Circuit Switching Shelf ................................................... 43 Hardware Configuration........................................................43 Functions and Principles .......................................................44 Backplane ..........................................................................45
Busbar ........................................................................ 46
Chapter 3........................................................................49
MGW Boards...................................................................49
Overview ...........................................................................49
MGW Board Specification ............................................... 52
Clock Generator Board (CLKG) ........................................ 56 CLKG Board Appearance.......................................................57 CLKG Board Working Principles..............................................65 CLKG Board Functions..........................................................66 CLKG Board Technical Indices ...............................................67
Main Processing Board (MPx86)....................................... 67
MPx86 Board Appearance .....................................................68 MPx86 Board Working Principles ............................................73 SMP Board Functions ...........................................................74 OMP Board Functions ...........................................................75 MPx86 Technical Indices.......................................................77
Multi-Function Network Interface Board (MNIC)................. 77 MNIC Board Appearance.......................................................77 MNIC Board Working Principles..............................................83 IPI Board Functions .............................................................84 SIPI Board Functions ...........................................................86
MNIC Technical Indices ........................................................ 88
Universal Interface Module Board (UIM) ........................... 88 UIM Board Appearance ........................................................ 89 UIM Board Working Principle................................................. 92 UIMC Board Functions ......................................................... 93 UIMU Board Functions ......................................................... 93 UIMT Board Functions.......................................................... 94 UIM Technical Indices.......................................................... 95 Rear Boards of UIMC Board .................................................. 96 Rear Board of UIMU or UIMT Board........................................ 97
GE Universal Interface Module Board (GUIM) .................... 99 GUIM Board Appearance ...................................................... 99 GUIM Board Working Principle ............................................ 104 GUIM Board Functions ....................................................... 104 GUIM Technical Indices...................................................... 105
Signaling Processing Board (SPB) .................................. 105 SPB Board Appearance ...................................................... 106 SPB Board Working Principles ............................................. 111 SPB Board Functions ......................................................... 113 SPB Technical Indices ........................................................ 113
ATM Process Board (APBE) ........................................... 113
APBE Board Appearance..................................................... 114 APBE Board Working Principles............................................ 119 APBE Board Functions........................................................ 119 APBE Technical Indices ...................................................... 120
Inter-Working Function Board (IWFB) ............................ 120 IWFB Board Appearance .................................................... 120 IWFB Board Working Principles ........................................... 124 IWFB Board Functions ....................................................... 125 IWFB Board Technical Indices ............................................. 125
Media Resource Board (MRB) ........................................ 126 MRB Board Appearance...................................................... 126 MRB Board Working Principles............................................. 129 MRB Board Functions......................................................... 130 MRB Board Technical Indices .............................................. 131
Voice Transcoder Card (VTCD) ...................................... 131 VTCD Board Appearance .................................................... 132 VTCD Board Working Principles ........................................... 136
VTCD Board Functions........................................................ 137 VTCD Board Technical Indices ............................................. 137
IP Packet Switching Network Board (PSN4V/PSN8V)......... 137
PSN4V/PSN8V Board Appearance......................................... 137 PSN4V/PSN8V Board Working Principles ............................... 140 PSN4V/PSN8V Board Functions............................................ 141 PSN4V/PSN8V Technical Indices .......................................... 141
2.5G Line Interface Board (GLIQV) ................................ 142 GLIQV Board Appearance ................................................... 142 GLIQV Board Working Principles .......................................... 146 GLI Board Functions .......................................................... 146 GLIQV Technical Indices ..................................................... 147
Digital Trunk Board (DTB) ............................................ 147 DTB Board Appearance ...................................................... 147 DTB Board Working Principles ............................................. 153 DTB Board Functions ......................................................... 154 DTB Board Technical Indices ............................................... 155
Digital Trunk Board with EC Function (DTEC) .................. 155
DTEC Board Appearance..................................................... 155 DTEC Board Working Principles............................................ 161 DTEC Board Functions........................................................ 162 DTEC Board Technical Indices ............................................. 163
Control Plane Interconnection Board (CHUB)................... 163
CHUB Board Appearance .................................................... 163 CHUB Board Working Principles ........................................... 168 CHUB Board Functions ....................................................... 169 CHUB Technical Indices...................................................... 169
TDM Switch Network Board (TSNB)................................ 169 TSNB Board Appearance..................................................... 169 TSNB Board Working Principles............................................ 173 TSNB Board Functions........................................................ 174 TSNB Board Technical Indices ............................................. 174
Enhanced TDM Switch Network Board (ETSN) ................. 174 ETSN Board Appearance..................................................... 174 ETSN Board Working Principles............................................ 178 ETSN Board Functions........................................................ 179 ETSN Board Technical Indices ............................................. 179
Advanced TDM Switch Network Board (STSN) ................. 179
STSN Board Appearance .................................................... 179 STSN Board Working Principles ........................................... 183 STSN Board Functions ....................................................... 184 STSN Board Technical Indices............................................. 184
TDM Fiber Interface (TFI) ............................................. 184 TFI Board Appearance ....................................................... 184 TFI Board Working Principles .............................................. 187 TFI Board Functions .......................................................... 188 TFI Board Technical Indices ................................................ 188
SONET Digital Trunk Board (SDTB) ................................ 188
SDTB Board Appearance .................................................... 188 SDTB Board Working Principles ........................................... 194 SDTB Board Functions ....................................................... 195 SDTB Board Technical Indices............................................. 195
Power Distribution Board (PWRD) .................................. 196
PWRD Board Appearance ................................................... 196 PWRD Board Working Principles .......................................... 198 PWRD Board Functions ...................................................... 199 PWRD Board Technical Indices ............................................ 199 Corresponding Interface Board............................................ 200
Chapter 4......................................................................201
Integrated Alarm Box..................................................201
Overview ......................................................................... 201 Appearance...................................................................... 201 Functions......................................................................... 202 Principle .......................................................................... 203
Chapter 5......................................................................205
MGW Inner Cables .......................................................205
Overview ......................................................................... 205 System Clock Cable........................................................... 206 Line Reference Clock Cable................................................. 207 Interconnection Cable on the Control Panel........................... 208 PD485 Cable .................................................................... 209 Fan Monitoring Cable......................................................... 209 Power Cables ................................................................... 210 Grounding Cables.............................................................. 215 Interconnection Fiber for TDM Switching Network .................. 218
Interconnection Fiber for Packet Switching Network................ 220
Chapter 6......................................................................223
MGW Outer Cables .......................................................223
Overview ......................................................................... 223 Environment Monitoring Transit Cable .................................. 224 Hygrothermal Sensor Cable ................................................ 225 Smoke Sensor Cable.......................................................... 226 Infrared Sensor Cable ........................................................ 227 Access Control Sensor Cable ............................................... 228 Cable from Carrier Power Supply to Cabinet-Top Filter Power Supply............................................................................. 229 Cables between Cabinet Protective Ground and Equipment Room Ground ............................................................................ 230 75 Ω E1 Trunk Cable.......................................................... 231 120 Ω E1 Trunk Cable (3×16-Core) ..................................... 234 120 Ω E1 Trunk Cable (11×4-Core) ..................................... 237 100 Ω T1 Trunk Cable (50-Core) ......................................... 240 100 Ω T1 Trunk Cable (6×8-Core) ....................................... 242 OMC Ethernet Cable........................................................... 245 Inter-Cabinet PD485 Interconnection Cable........................... 246 IP Access Cable of Mc Interface ........................................... 247 User Plane Interconnection Cables of Nb Interface.................. 247
Appendix A...................................................................251
Abbreviations...............................................................251
Glossary........................................................................255
Figures..........................................................................259
Tables ...........................................................................265
Index............................................................................271
Confidential and Proprietary Information of ZTE CORPORATION i
About This Manual
Purpose
This manual provides detailed description about hardware modules and components of ZXWN MGW system.
Intended Audience
This document is intended for engineers and technicians who perform operation activities on the ZXWN MGW system.
Prerequisite Skill and Knowledge
To use this document effectively, users should have a general understanding of wireless telecommunications technology. Familiarity with the following is helpful:
MGW system and its various components.
User interfaces of MGW system.
Local operating procedures of ZXWN MGW system.
What is in This Manual
This manual contains the following chapters:
T AB L E 1 C H A P T E R S U M M AR Y
Chapter Summary
Chapter 1, MGW Cabinet
Introduces structure and layout of MGW cabinet
Chapter 2, Shelves and Busbar
Explains detail specifications of MGW Shelves
Chapter 3, MGW Boards Introduces various MGW boards and modules
ZXWN MGW Media Gateway Hardware Description
ii Confidential and Proprietary Information of ZTE CORPORATION
Chapter Summary
Chapter 4, Integrated Alarm Box
Describes the appearance, functions and principle of the integrated alarm box
Chapter 5, MGW Inner Cables
Describes the inner cables of MGW
Chapter 6, MGW Outer Cables
Describes the outer cables of MGW cabinet
Conventions
ZTE documents employ the following typographical conventions.
T AB L E 2 TY P O G R AP H I C AL C O N V E N T I O N S
Typeface Meaning
Italics References to other Manuals and documents.
“Quotes” Links on screens.
Bold Menus, menu options, function names, input fields, radio button names, check boxes, drop-down lists, dialog box names, window names.
CAPS Keys on the keyboard and buttons on screens and company name.
Constant width Text that you type, program code, files and directory names, and function names.
[ ] Optional parameters.
Mandatory parameters.
| Select one of the parameters that are delimited by it.
Note: Provides additional information about a certain topic.
T AB L E 3 M O U S E OP E R AT I O N C O N V E N T I O N S
Typeface Meaning
Click Refers to clicking the primary mouse button (usually the left mouse button) once.
Double-click Refers to quickly clicking the primary mouse button (usually the left mouse button) twice.
Right-click Refers to clicking the secondary mouse button (usually the right mouse button) once.
Drag Refers to pressing and holding a mouse button and moving the mouse.
Typographical Conventions
Mouse Operation
Conventions
About This Manual
Confidential and Proprietary Information of ZTE CORPORATION iii
How to Get in Touch
The following sections provide information on how to obtain support for the documentation and the software.
If you have problems, questions, comments, or suggestions regarding your product, contact us by e-mail at [email protected]. You can also call our customer support center at (86) 755 26771900 and (86) 800-9830-9830.
ZTE welcomes your comments and suggestions on the quality and usefulness of this document. For further questions, comments, or suggestions on the documentation, you can contact us by e-mail at [email protected]; or you can fax your comments and suggestions to (86) 755 26772236. You can also browse our website at http://support.zte.com.cn, which contains various interesting subjects like documentation, knowledge base, forum and service request.
Customer Support
Documentation Support
ZXWN MGW Media Gateway Hardware Description
iv Confidential and Proprietary Information of ZTE CORPORATION
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Confidential and Proprietary Information of ZTE CORPORATION v
Declaration of RoHS Compliance
To minimize the environmental impact and take more responsibility to the earth we live, this document shall serve as formal declaration that the ZXWN MGW manufactured by ZTE CORPORATION are in compliance with the Directive 2002/95/EC of the European Parliament - RoHS (Restriction of Hazardous Substances) with respect to the following substances:
Lead (Pb)
Mercury (Hg)
Cadmium (Cd)
Hexavalent Chromium (Cr (VI))
PolyBrominated Biphenyls (PBB’s)
PolyBrominated Diphenyl Ethers (PBDE’s)
…
The ZXWN MGW manufactured by ZTE CORPORATION meet the requirements of EU 2002/95/EC; however, some assemblies are customized to client specifications. Addition of specialized, customer-specified materials or processes which do not meet the requirements of EU 2002/95/EC may negate RoHS compliance of the assembly. To guarantee compliance of the assembly, the need for compliant product must be communicated to ZTE CORPORATION in written form.
This declaration is issued based on our current level of knowledge. Since conditions of use are outside our control, ZTE CORPORATION makes no warranties, express or implied, and assumes no liability in connection with the use of this information.
ZXWN MGW Media Gateway Hardware Description
vi Confidential and Proprietary Information of ZTE CORPORATION
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Confidential and Proprietary Information of ZTE CORPORATION 1
C h a p t e r 1
MGW Cabinet
Overview
This chapter describes the assembly, wiring, technical indices, and mechanical components of ZXWN MGW cabinet.
This chapter includes the following topics.
T AB L E 4 TO P I C S I N C H AP T E R 1
Topics Page No.
MGW Cabinet Structure 1
Cabinet Cabling 6
Technical Indices 8
MGW Cabinet Structure
This section describes the cabinet functions, appearance, structure, different component functions and inter-shelf relationship of the cabinet.
The cabinet is used to store the shelves so as to protect shelves, supply power, and shield the electromagnetic interference. In addition, the equipment can be arranged orderly and neatly, facilitating the equipment maintenance in future.
The ZXWN MGW cabinet adopts a 19-inch standard cabinet structure, which has a maximum internal space of 42 U (Units). Figure 1 shows the standard MGW cabinet.
Introduction
Contents
Overview
Function
Dimensions
ZXWN MGW Media Gateway Hardware Description
2 Confidential and Proprietary Information of ZTE CORPORATION
F I G U R E 1 19 - I N C H S T AN D A R D MGW C AB I N E T
Table 5 shows 19-inch standard MGW cabinet dimensions.
T AB L E 5 C AB I N E T D I M E N S I O N S
Height (h) Width (w) Depth (d)
2000mm 600mm 800mm
Figure 2 shows the integrated 19-inch standard MGW cabinet.
Chapter 1 MGW Cabinet
Confidential and Proprietary Information of ZTE CORPORATION 3
F I G U R E 2 I N T E G R AT E D C AB I N E T W I T H O U T D O O R
Figure 3 shows the partial 19-inch standard MGW cabinet.
ZXWN MGW Media Gateway Hardware Description
4 Confidential and Proprietary Information of ZTE CORPORATION
F I G U R E 3 P AR T I AL C AB I N E T W I T H O U T D O O R
Table 6 shows the maximum configuration of a single ZXWN MGW cabinet.
T AB L E 6 C AB I N E T C O M P O S I T I O N
Service Shelf
Power Distribution Shelf
Cable Shelf
Fan Shelf
Blank Panel
Total
4 layers × 8 U
1 layers × 2 U
4 layers × 1 U
3 layers × 1 U
1 layer × 1 U
42 U
Corresponding modules are configured in the cabinet, for example, the cabinet power access filter, busbar integrated equipment and rear horizontal cabling rack.
Figure 4 shows the structure of the cabinet.
Cabinet Configuration
Chapter 1 MGW Cabinet
Confidential and Proprietary Information of ZTE CORPORATION 5
F I G U R E 4 C AB I N E T S T R U C T U R E
2000
600
Blank panel (1U)Power shelf (2U)Fan shelf (1U)
Service shelf (8U)
Cable shelf (1U)
Cable shelf (1U)Fan shelf (1U)
Cable shelf (1U)
Cable shelf (1U)
Fan shelf (1U)
Air filter
Service shelf (8U)
Service shelf (8U)
Service shelf (8U)
Table 7 shows the function of each part. Functions of Each Part
ZXWN MGW Media Gateway Hardware Description
6 Confidential and Proprietary Information of ZTE CORPORATION
T AB L E 7 FU N C T I O N O F E AC H P AR T
Part Function
Power distribution shelf
The power distribution shelf distributes the -48V input power to each shelf.
It has the lightning proof and over-current protection functions, checks the input power voltage and the distributed output power statuses, and gives alarm signal if necessary.
It also effectively monitors the rack running environment, fan heat dissipation system, access control etc., and reports through the RS485 interface.
Service shelf It is composed of each kind of board combined through the backplane.
In addition, the service shelf also includes the shelf power filter, which is used to separate and filter -48V input power
The service shelf of the MGW has four types: level-1 switching shelf, circuit switching shelf, control shelf and resource shelf.
Fan shelf Provides forced air cooling for the equipment
Cable shelf Used to arrange fiber, which is leaded to the two sides of the cabinet through each cable shelf under each shelf
Busbar Located at the internal side of the cabinet. The power is provided to each shelf through the bus bar
Rear horizontal cabling rack
Arranges the cables from the rear of the cabinet.
Cabinet power input filter
There are two combined filters on the top of the cabinet, which are used to filter the two lines of -48 V external input power.
Cabinet Cabling
The outlet of MGW falls into the micro coaxial cable, optical fiber, Ethernet cables, and trunk cables, and other cables. In the MGW system, a single service shelf can be configured with at most 6×32 E1 micro coaxial cables, or 192 optical fibers and a few cables, or about 50 Ethernet cables or common 16-core cables. The cabling mode of cables is different from that of the optical fibers.
For the convenience and good-looking of shelf-cabling, optical fibers, while passing the cabling shelf under each shelf, are put into the cabling trough in the front and led to both sides of the cabinet to be further led out of the cabinet.
Figure 5 shows the optical fiber shelf.
Overview
Optical Fiber Wiring
Chapter 1 MGW Cabinet
Confidential and Proprietary Information of ZTE CORPORATION 7
F I G U R E 5 OP T I C AL F I B E R S H E L F
The power cable is taken out from the rear board panel. Then it goes downwards to pass through the plugging/unplugging space of the rear board, where it is bundled to the rear horizontal cabling rack. Finally, it enters the vertical cabling trough from both sides, and then goes out of the cabinet.
Figure 6 shows the routing of rear outlets.
F I G U R E 6 C AB I N E T R E AR C AB L I N G
100
100
100
100
8
7
6
3
12
2
3
1
3
2
3
2
1
45
Power Cable Wiring
ZXWN MGW Media Gateway Hardware Description
8 Confidential and Proprietary Information of ZTE CORPORATION
T AB L E 8 L A B E L S I N C AB I N E T R E AR C AB L I N G
Label Description
1 Fan Shelf
2 Cabling shelf
3 Control shelf
4 Power distribution shelf
5 Blank panel
6 Shelf power filter
7 Rear plugging/unplugging cabling
8 Rear horizontal cabling rack
Technical Indices
Table 9 shows the requirements on temperature and humidity for ZXWN MGW.
Table 9 Operating Environment
Temperature Relative Humidity
Long-Term Operating Condition
Short-Term Operating Condition
Long-Term Operating Condition
Short-Term Operating Condition
10°C to 30°C 0°C to 45°C 30% to 85% 20% to 90%
Note:
Internal operating temperature and humidity of the equipment room measures at 1.5 m height from the ground and 0.4 m front of the rack when there is no protection board in front or at the back of the rack.
Short-term operating condition refers to working for no more than 48 successive hours and no more than 5 days accumulatively each year.
Table 10 shows the dimensions of single cabinet.
T AB L E 10 D I M E N S I O N S
Height (h) Width (w) Depth (d)
2000 mm 600 mm 800 mm
Operating Environment
Dimensions
Chapter 1 MGW Cabinet
Confidential and Proprietary Information of ZTE CORPORATION 9
Table 11 shows the operating requirements of ZXWN MGW cabin.
T AB L E 11 OP E R A T I N G R E Q U I R E M E N T S
Weight Power Supply System Capacity
310kg -57 V to -40 V DC 2,000,000 Users
Table 12 shows the power consumption of ZXWN MGW system.
T AB L E 12 P O W E R C O N S U M P T I O N
Shelf Consumption
Resource shelf 1000W
Control shelf 1000W
Level-1 switching shelf 1800W
Circuit switching shelf 500W
Operating Requirements
Power Consumption
ZXWN MGW Media Gateway Hardware Description
10 Confidential and Proprietary Information of ZTE CORPORATION
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Confidential and Proprietary Information of ZTE CORPORATION 11
C h a p t e r 2
Shelves and Busbar
Overview
This chapter introduces the configuration and working theory of each shelf, backplanes and their interfaces, DIP-switches and jumpers, the structure and function of busbar.
This chapter includes the following topics.
T AB L E 13 TO P I C S I N C H AP T E R 2
Topics Page No.
Power Distribution Shelf 12
Fan Shelf 14
Service Shelf 15
Hardware Structure 15
Service Shelf Type 18
Typical Configuration 19
Communication Relationship 20
DIP Switches on Service Shelf Backplane 20
Control Shelf 22
Hardware Configuration 22
Functions and Principles 24
Backplane 25
Resource Shelf 26
Hardware Configuration 27
Functions and Principles 29
Backplane 31
GE Switching Resource Shelf 32
Hardware Configuration 33
Introduction
Contents
ZXWN MGW Media Gateway Hardware Description
12 Confidential and Proprietary Information of ZTE CORPORATION
Topics Page No.
Functions and Principles 36
Backplane 38
Level-1 Switching Shelf 39
Hardware Configuration 40
Functions and Principles 41
Backplane 42
Circuit Switching Shelf 43
Hardware Configuration 43
Functions and Principles 44
Backplane 45
Busbar 46
Power Distribution Shelf Power distribution shelf design is a universal 2U high shelf module.
The power distribution shelf offers the following functions.
It distributes the input -48V power to each shelf.
It has the lightning and over-current protection functions.
It checks the input power voltage and the distributed output power statuses, and gives alarm if necessary.
It effectively monitors the rack running environment, fan heat dissipation system, access control etc., and reports through the RS485 interface.
The power distribution shelf is located at the top of the cabinet.
Table 14 shows the dimensions of power distribution shelf.
T AB L E 14 D I M E N S I O N S
Height (h) Width (w) Depth (d)
88.1 mm (2 U) 482.6 mm (19 inch) 374 mm
Note:
These dimensions exclude the protrusion of the connection terminal on the back.
Connection terminal installation is on the backboard of the shelf and Monitoring board installation is on the front panel of the shelf. Front panel can revolve around the axis outward with an angle of 90 degree. Thus, shelf can easily open for maintenance.
Overview
Function
Position
Dimensions
Connection Terminal
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 13
During normal operation, front panel fixes to the shelf with captive screws.
Figure 7 shows power distribution shelf plane view.
F I G U R E 7 P L AN E V I E W
51 4 6
2
8
3 7
Table 15 shows the function of each part in Figure 7.
T AB L E 15 FU N C T I O N O F E AC H P AR T O F T H E P O W E R D I S T R I B U T I O N SH E L F
Number Part Name Function
1 Frame Casing frame
2 Isolated diode radiator
Used to radiate heat from the isolated diode
3 Switch Power switch that can play the role of over-current protection
4 Arrester Proof against lightning strike
5 Connection terminal
Used to lead in the two lines of -48V external power output by the filter, and output it to the busbar to provide power for the sub rack
Plane View
Function of Each Part
ZXWN MGW Media Gateway Hardware Description
14 Confidential and Proprietary Information of ZTE CORPORATION
Number Part Name Function
6 PWRDB Used to provide the external interface for the POWERD:
1. Input interface of the environment detecting sensor
2. RS485 interface (with the OMP)
3. Input interface monitored by the fan
4. Access control monitoring interface.
7 PWRD Monitoring the following information:
1. Monitoring whether there is over-voltage, under-voltage or power down occurring in the -48V power voltage
2. Monitoring whether the fan is normal
3. Monitoring whether there are smoking signal, the signal of the temperature or the humidity exceeding the threshold, access control alarm signal and other
Give the alarm about the monitored signal through the LED indicator, and report the signal to the OMP, other related functional boards or the background server through the RS485 interface
8 Isolated diode Used to avoid mutual reverse flow of the 2 lines of input power
Connection terminal: It is required to access the -48V, GNDP, GND and -48VGND to the two filters on the top of the rack.
PWRDB: It is required to connect with the environment monitoring sensor, fan shelf and access control switch. In addition, the information monitored by the PWRD can be reported to the OMP, other related functional boards or the background server through the RS485 interface.
Fan Shelf The fan shelf is a universal module. In the ZXWN MGW cabinet, a closed air passage is formed where the wind flows in from the bottom and flows out on the top to cool down the equipment forcedly.
It has functions of monitoring and automatic speed adjustment.
Interface
Overview
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 15
Figure 4 shows the position of the control shelf in the cabinet.
1 U
There are three sets of unit modules in each fan shelf. Each set of unit modules contains two fans. Blind match can be implemented. And it is convenient to perform field maintenance and live replacement. Figure 8 shows the structure of fan shelf.
F I G U R E 8 S T R U C T U R AL V I E W O F F AN S H E L F
Service Shelf The MGW service shelf comprises the control shelf, resource shelf, level-1 switching shelf and circuit switching shelf.
This section includes the following topics:
T AB L E 16 TO P I C S I N S E R V I C E S H E L F S E C T I O N
Topics Page No.
Hardware Structure 15
Service Shelf Type 18
Typical Configuration 19
Communication Relationship 20
DIP Switches on Service Shelf Backplane 20
Hardware Structure
The service shelf of MGW is of the shielding-class shelf structure with inserted front and rear boards in pairs. The insertion space for front boards is 8U, and that for rear boards is 6U. The shelf has 17 board slots in the front and back respectively. The board
Position
Height
Structure
Overview
Contents
Overview
ZXWN MGW Media Gateway Hardware Description
16 Confidential and Proprietary Information of ZTE CORPORATION
slots are spaced 25.4 mm. The insertion space is 85 HP. Optical fibers are led out of the front panel of the front boards. Other cables are led out of the front panel of the rear boards.
The whole system has over 30 kinds of functional front boards and over 10 kinds of rear boards.
Figure 9 and Figure 10 show the appearance of the service shelf.
F I G U R E 9 FR O N T V I E W O F T H E S E R V I C E S H E L F
F I G U R E 10 BAC K V I E W O F T H E S E R V I C E S H E L F
Figure 11 shows the structure of general 8U shelf.
Appearance
Structure
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 17
F I G U R E 11 SE C T I O N AL V I E W O F T H E S E R V I C E S H E L F
8U
1
479.2
2
6U
7
8
5
3
4
9 6
The function of each part is shown in Table 17.
T AB L E 17 FU N C T I O N O F E AC H P AR T O F T H E S E R V I C E SH E L F
Number Part Name Function
1 Front board Unit board
2 Rear board Providing interfaces of HW and network cables, and other interfaces for the front board.
3 –48 V access filter
Filtering the -48 V input power to ensure that the corresponding isolation and filter requirements can be met.
4 Backplane reinforcing rib
Reinforcing the strength of the backboard.
5 Metal guiding latch
Acting as the guide rod of the location and direction when the board is being inserted.
6 Plastic guide rail
Installed at both the upside and the underside of the shelf, and used to insert the board correctly.
7 2 mm connector
Used to connect the boards.
8 Backplane Back board is an important part of a shelf. The circuits in the same shelf are mutually connected through the printed wire on the backboard, which greatly reduces cables on the backplane and improves the reliability of the integrated equipment.
ZXWN MGW Media Gateway Hardware Description
18 Confidential and Proprietary Information of ZTE CORPORATION
Number Part Name Function
9 DIP switch Used to set the office number, rack number and shelf number.
Service Shelf Type
MGW is responsible for offering voice, multimedia and circuit-domain data services between the PSTN and UMTS, between the 3G and 2G, and inside the UMTS. It also supports the extended VoIP/FoIP services. It can integrate the SGW function to transfer signaling to other NEs, such as MGW.
The MGW has five types of service shelf: level-1 switching shelf, circuit switching shelf, control shelf, resource shelf, and GE switching resource shelf.
Table 18 shows the functions of each shelf.
T AB L E 18 FU N C T I O N S O F EAC H S H E L F
Shelf Type Function
level-1 switching shelf
The level-1 switching shelf is 40/80 Gbps core switching sub-system in the MGW system. It provides necessary message transfer channels between functional entities in the system and between external functional entities. In this way, it exchanges data such as timing, signaling, voice service, data service and offers corresponding QoS functions according to service requirements of different users.
Circuit switching shelf
The circuit switching shelf is used for smooth capacity expansion of the circuit switching network with a capacity of 64 Kb~256 Kb.
Control shelf The control shelf is the control core of the MGW. It controls and manages the whole system.
Resource shelf
The resource shelf provides external interfaces for processing various access modes and related lower-layer protocols. It also provides various resource processing modules for processing wireless protocols.
GE switching resource shelf
It provides the external interfaces of the MGW for processing various access modes and related lower-layer protocols.
In addition, it provides various resource processing modules for processing wireless protocols.
Compared with the resource shelf, it increases the number of GEs of the media plane. The shelf supports 64 K circuit switching.
Introduction
Functions of Each Shelf
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 19
Table 19 shows the corresponding relationship between the shelf and the backplane.
T AB L E 19 C O R R E S P O N D I N G R E L AT I O N S H I P B E T W E E N SH E L F & B AC K P L AN E
Shelf Backplane Name Descriptions
Control shelf BCTC Backplane of control center
Resource shelf BUSN Backplane of universal service network
GE switching resource shelf
BGSN Backplane of general service network
Level-1 switching shelf
BPSN Backplane of packet switched network
Circuit switching shelf
BCSN Backplane of circuit switched network
Typical Configuration
The quantity of MGW cabinets and that of shelves in an MGW cabinet depend on the system requirement. Typically, an MGW cabinet includes level-1 switching shelf, circuit switching shelf, control shelf, and resource shelf (or GE switching resource shelf).
Figure 12 shows the typical configuration of an MGW cabinet.
F I G U R E 12 CO N F I G U R AT I O N D I AG R AM
Level-1 Switching Shelf
Control Shelf
Control Shelf
Circuit Switching Shelf
Control Shelf
Resource Shelf/1000M Switching Resource
Shelf
Resource Shelf/1000M Switching Resource
Shelf
Resource Shelf/1000M Switching Resource
Shelf
Resource Shelf/1000M Switching Resource
Shelf
A cabinet can be configured with at most four shelves, which can be numbered from top to bottom. Four shelves in the first cabinet are numbered from top to bottom with range of 1~4, and the four shelves in the second cabinet with range of 5~8, and so forth.
Corresponding Backplane
ZXWN MGW Media Gateway Hardware Description
20 Confidential and Proprietary Information of ZTE CORPORATION
The main control shelf is fixed on the second shelf of the first cabinet, being numbered as 2.
Communication Relationship
Figure 13 shows the communication relationship between shelves in the MGW.
F I G U R E 13 CO M M U N I C AT I O N S R E L AT I O N S H I P B E T W E E N S H E L V E S
Control shelf
Resource shelf/1000M Switching resource shelf
Control-flow Ethernet
Clock signal
Level-1 switching shelfMedia plane
data
Control-flow EthernetClock
signal
Circuit switching shelf
Control-flow Ethernet
Clock signal
DIP Switches on Service Shelf Backplane
Figure 14 shows the detailed diagram of the DIP switches on the control shelf, level-1 switching shelf, circuit switching shelf and resource shelf.
F I G U R E 14 LAY O U T O F D IP S W I T C H E S O N B AC K P L AN E
There are three 4-bit flat-move DIP switches on the backplane. Viewed from the back, identifiers of the DIP switches from left to right are TRIB-ID, RACK-ID, and SHELF-ID successively, used for configuring office number, cabinet number and shelf number respectively. Using binary code to represent the position of the DIP switch, its rules are as follows:
Layout of DIP Switches
Method
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 21
1. Turning the DIP switch upward indicates “ON”, corresponding value of “0”.
2. Turning the DIP switch downward indicates “OFF”, corresponding value of “1”.
The actual office number, rack number, and shelf number are plus 1 on the basis of the TRIB-ID, RACK-ID, and SHELF-ID.
From left to right, definitions of various DIP switches at upper position are shown respectively in Table 20, Table 21 and Table 22.
T AB L E 20 OF F I C E N U M B E R D IP S W I T C H S I G N AL D E F I N I T I O N
DIP Switch Binary Code (from back to front)
Description
TRIB-ID0 No.1
TRIB-ID1 No.2
TRIB-ID2 No.3
TRIB-ID3 Reserve
Configurable hardware range: 0~7
T AB L E 21 C AB I N E T N U M B E R D IP S W I T C H S I G N AL D E F I N I T I O N
DIP Switch Binary Code (from back to front)
Description
RACK-ID0 No.1
RACK-ID1 No.2
RACK-ID2 No.3
RACK-ID3 No.4
Configurable hardware range: 0~15
T AB L E 22 S H E L F N U M B E R D IP S W I T C H S I G N AL D E F I N I T I O N
DIP Switch Binary Code (from back to front)
Description
SHELF-ID0 No.1
SHELF-ID1 No.2
SHELF-ID2 Reserve
SHELF-ID3 Reserve
Configurable hardware range: 0~3
Both S1 switches and S2 switches are turned to “on”, and the left two S3 switches are turned to “off” with values read by the DIP are 0, 0, and 3 respectively. In this way, the position of shelf is No. 4 shelf of the rack 1 in the office 1.
Example
ZXWN MGW Media Gateway Hardware Description
22 Confidential and Proprietary Information of ZTE CORPORATION
Control Shelf This section describes the control shelf in the MGW cabinet.
This section includes the following topics.
T AB L E 23 TO P I C S I N C O N T R O L S H E L F S E C T I O N
Topics Page No.
Hardware Configuration 22
Functions and Principles 24
Backplane 25
Hardware Configuration
This section describes the components of the control shelf, and the plugging rule of the boards, and introduces a configuration example.
The BCTC is the backplane of the control shelf. It provides 17 slots for the functional boards.
Table 24 shows the equipped boards and their configurations.
T AB L E 24 B O A R D C O N F I G U R AT I O N O N T H E C O N T R O L SH E L F
Logical Board Name
Physical Board Name
Configuration Description
UIMC UIM
Each control shelf is fixedly configured with one pair of UIMC boards, which adopt 1+1 active/standby working mode.
SMP MPx86
One system is configured with signaling and service SMP boards. The signaling SMP boards adopt load-sharing working mode, while the service SMP boards adopt 1+1 active/standby working mode.
OMP MPx86
One system is fixedly configured with one pair of OMP boards, which adopt 1+1 active/standby working mode.
SIPI MNIC
Configured when the Mc interface adopts the IP bearer, taking charge of IP access and processing the SIGTRAN signaling. It adopts 1+1 active/standby or load-sharing working mode.
Overview
Contents
Overview
Board Configuration
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 23
Logical Board Name
Physical Board Name
Configuration Description
CHUB CHUB
One multi-shelf system must be configured with one pair of CHUB boards, which adopt 1+1 active/standby working mode.
CLKG CLKG
One set of system must be configured with one pair of CLKG boards, which adopt 1+1 active/standby working mode.
The CLKG boards are generally configured in the circuit switching shelf. When there is no circuit switching shelf, they are configured in the control shelf.
The rule for plugging boards to the slots in the control shelf is as follows.
UIMC boards are fixedly inserted in slots 9 and 10.
OMP boards are fixedly inserted in slots 11 and 12.
SIPI boards are inserted in the slots 3 and 4.
CHUB boards are inserted in the slots 15 and 16.
CLKG boards are inserted in the slots 13 and 14.
SMP boars are inserted in the slots 1, 2, and 5~8. They also can be inserted in the slots 13 and 14, when there are no CLKG boards.
Figure 15 shows the control shelf configuration.
Rules for Inserting
Boards
Configuration Instance
ZXWN MGW Media Gateway Hardware Description
24 Confidential and Proprietary Information of ZTE CORPORATION
F I G U R E 15 CO N T R O L S H E L F C O N F I G U R AT I O N
BCTC Main control shelf
RU
IM2
RU
IM3
RM
PB
RM
PB
RC
KG1
RC
KG2
RC
HB1
RC
HB2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
M
P
SM
P
SM
P
SM
P
SM
P
UI
MC
UI
MC
OM
P
OM
P
CL
KG
CL
KG
CH
UB
CH
UB
S
M
P
S
BCTC Cascade shelf
RU
I
M
2
RU
I
M
3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
M
P
SMP
SMP
SMP
SMP
SMP
SMP
UIMC
UIM
C
MP
MP
S
MP
S
R
M
N
I
C
R
M
N
IC
IPI
SIP
I
S
S S
M
P
M
P
S SM
P
M
P
S S
Rear board
Front board
Rear board
Front board
Functions and Principles
As the control core of MGW, the control shelf manages and controls the whole system.
The control shelf is shown in Figure 16.
F I G U R E 16 CO N T R O L S H E L F P R I N C I P L E
BCTC backplane: It is used to bear the signaling processing board and various active control modules. It transits and processes media streams of the control plane, and forms the distributed processing platform of the system in multi-shelf equipment.
UIMC board: It is the signaling switching center of the control shelf. It exchanges information between the boards.
Function
Working Principle
Description
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 25
It also provides an Ethernet control channel to connect externally the resource shelf.
SMP board: It implements the processing of the UMTS packet control protocol, such as the GMM, SM, and GTP-C. For 2.5G, it implements the control-plane-related part processing of the BSSGP and the LLC protocols.
OMP board: It provides Ethernet interface from the OMC to the background.
SIPI board: It provides the IP access of the Mc interface for processing signaling borne over IP.
CHUB board: It is used for multi-shelf expansion. It connects the centralized signaling processing subsystem with the control plane Ethernet flows of each resource shelf. Connecting with two 100M Ethernet interfaces of each cascade shelf, the CHUB externally provides 46 GE Ethernet interfaces.
Backplane
The backplane is an important part of a shelf. Circuit boards in a shelf are connected through printed wires on the backplane, which greatly reduces cable routing on the backplane and improves the operation reliability of the whole system.
Figure 17 shows the rear view of BCTC.
Introduction
Rear View
ZXWN MGW Media Gateway Hardware Description
26 Confidential and Proprietary Information of ZTE CORPORATION
F I G U R E 17 BCTC R E AR V I E W
DIP switch
Power connector
Board locating pin
Fastening screw at the backplane
Backplane connector
Table 25 shows the external interfaces of the control shelf.
T AB L E 25 E X T E R N AL I N T E R F AC E O F T H E C O N T R O L S H E L F
Interface ID Purpose Connection Relation
X0~X1 Power socket Connecting to busbar -48 V, -48 V GND, and GNDP
Resource Shelf This section describes the resource shelf in the MGW cabinet.
This section includes the following topics:
T AB L E 26 TO P I C S I N R E S O U R C E S H E L F S E C T I O N
Topics Page No.
Hardware Configuration 27
Functions and Principles 29
Backplane 31
External Interface
Overview
Contents
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 27
Hardware Configuration
This section describes the components of the resource shelf and the rules for inserting boards, and introduces configuration instances.
The BUSN is the backplane of the resource shelf. The boards that can be configured and their configurations are shown in Table 27.
T AB L E 27 B O A R D C O N F I G U R AT I O N O N T H E R E S O U R C E S H E L F
Logical Board Name
Physical Board Name
Configuration Description
UIMT, UIMU UIM
The UIM board must be configured, which adopt 1+1 active/standby working mode.
The UIMU board is usually configured in a single resource shelf.
The UIMT board is usually configured in multiple shelves when the circuit switching shelf is needed.
IPI MNIC
Configured when the Nb interface adopts the IP bearer.
According to the requirements, there are following IPI boards are required: IPI (FE), IPI (GE optical interface), IPI (GE electrical interface), IPI (POS155M) and IPI (POS622M).
Configured when the IM-MGW needs to provide the Mb and Mn interfaces.
Adopting 1+1 active/standby or load-sharing working mode.
APBE APBE Configured when the Lu, Nb and MC interfaces adopt the ATM bearer.
IWFB IWFB
Configured when it is required to provide transparent/nontransparent synchronous asynchronous data service, and nontransparent circuit switching data bearer service.
MRB MRB
Configured when it is required to provide TONE and voice sending, DTMF number sending/receiving, MFC number sending/receiving, and conference telephone functions.
Overview
Board Configuration
ZXWN MGW Media Gateway Hardware Description
28 Confidential and Proprietary Information of ZTE CORPORATION
Logical Board Name
Physical Board Name
Configuration Description
VTCD VTCD
The VMGW should be configured with at least two VTCD boards, which are used to encode the voice signal at the BSC and RNC sides, process the Iu-UP protocol, and encode the signal over IP.
The GMGW should be configured with the VTCD board when the signal over TDM or IP needs to be encoded.
DTEC, DTB DTEC
Configured when the Nb interface adopts the TDM bearer or when the Ai and A interfaces need to be provided, and used to implement E1 access.
SDTB SDTB
Configured when the Nb interface adopts the TDM bearer or when the Ai and A interfaces need to be provided, and used to implement STM-1 access.
Adopting 1+1 or 1:1 active/standby working mode.
SPB SPB
Configured when the Ai and A interfaces need to be provided, or when the MGW acting as the signaling gateway needs to perform inter-office SS7 signaling transfer.
The rule for inserting boards to the slots in the resource shelf is as follows.
UIM boards adopt the active/standby mode, and are fixedly configured in the slots 9 and 10.
IPI (FE) and IPI (POS155M) boards are configured in the slots 5~8 and slots 11~14.
IPI (GE optical interface), IPI (GE electrical interface) and IPI (POS622M) boards are configured in the slots 1 and 2. When it does not need the protection, the slot 2 is idle.
MRB and IWFB boards are configured in the slots 15, 16 and 17.
APBE, SPB, SDTB, DTEC, DTB, and VTCD boards are configured in the slots 1~8 and 11~16.
Three instances are given based on the following three situations.
Figure 18 shows the end office configuration when the Nb interface adopts the IP bearer (GE).
Rule for Inserting
Boards
Configuration Instances
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 29
F I G U R E 18 RE S O U R C E S H E L F C O N F I G U R AT I O N 1
Figure 19 shows the end office configuration when the Nb interface adopts the IP bearer (FE).
F I G U R E 19 RE S O U R C E S H E L F C O N F I G U R AT I O N 2
Figure 20 shows the end office configuration when the Nb interface adopts the TDM bearer.
F I G U R E 20 RE S O U R C E S H E L F C O N F I G U R AT I O N 3
Functions and Principles
Resource shelf provides external interfaces of MGW for processing various access modes and related lower-layer
Functions
ZXWN MGW Media Gateway Hardware Description
30 Confidential and Proprietary Information of ZTE CORPORATION
protocols. It also provides various resource processing modules for processing wireless protocols.
The principle of the resource shelf is shown in Figure 21.
F I G U R E 21 RE S O U R C E S H E L F P R I N C I P L E S
IBB/SDU/ABPM/UPCF
DTBDTB
IPCFIPI
UIMUIMT
Control flow 100M Ethernet
8K、16M、PP2SIWFBMRB
IP interfaceATM
interface
APBE/DTEC
Media flow 100M Ethernet
8M HW
Interconnecting control shelf CHUB
IBB/SDU/ABPM/UPCFVTCD
E1 interface
BUSN: Is universal service backplane. Multiple service processing modules can be inserted in it to form universal service processing subsystem.
UIM: Implements function of managing the Level-2 switching, the time slot multiplexing and exchanging and the resource shelf. Meanwhile, UIM provides external interfaces to control the shelf. These interfaces include the packet data interfaces (GE optical interfaces) connecting with the core switching unit, the circuit domain interfaces (the optical interfaces) connecting with the circuit switching unit and the control plane data Ethernet interfaces (four FEs) of the distributed processing platform. It also distributes the clock provided by the clock board to the board.
APBE: Provides two 155 Mbps ATM optical interfaces, implements SAR of the 155 Mbps ATM AAL2 and AAL5, performs IP mapping for media stream payloads after the SAR processing and then forwards them through four FEs. The APBE provides access for the Iu-CS interface and ATM access for the Nb interface.
IMAB: Provides the 63-E1 IMA access function, implements the SAR of the 155 Mbps ATM AAL2 and AAL5, performs IP mapping for media stream payloads after the SAR processing and then forwards them through four FEs.
IPI: Provides the IP access for the Nb interface. It serves as the network interface board or packet data protocol processing board.
DTEC: Provides the TDM mode for the Nb interface, or offers the A and Ai interfaces. It provides 32-channel E1/T1 physical interfaces, implements the Echo Cancellation (EC)
Principles
Description
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 31
function by installing the EC sub-card, and supports inter-office transparent transmission in Channel Associated Signaling (CAS) and Common Channel Signaling (CCS) modes. In addition, it extracts an 8 K synchronous clock from the line and transmits the clock to the clock board through a cable as a clock reference.
DTB: Provides the TDM mode for the Nb interface, or offers the A and Ai interfaces. It offers 32-channel E1/T1 physical interface for the system. It supports inter-office transparent transmission in CAS and CCS modes. In addition, it extracts an 8 K synchronous clock from the line and transmits the clock to the clock board through a cable as a clock reference.
VTCD: Serves as the voice coding/decoding board, and implements the voice coding/decoding, CS data service rate adaptation and UP protocol processing.
IWFB: Offers circuit switching data bearer service for the transparent/non-transparent synchronous or asynchronous data services and the nontransparent fax service. The processing capability is 60 channels.
MRB: Implements 480-channel media resource functions, mainly including Tone/Voice, DTMF detection/generation, MFC detection/generation and conference call. The service functions take 120 channels as one basic subunit and the software can make configurations based on the subunit. The conference call function supports the random configuration with each group consisting of three to 120 parties.
SDTB: Provides the standard optical trunk interface, the STM-1. It can process the CAS and CCS. Each board has the processing capability of 63 E1s or 84 T1s. When the SDTB is connected with the PSTN, the EC function is provided by inserting the EC sub-card.
SPB: Offers access for 16 E1 channels and processes MTP-2 protocol in SS7. The data are packed into the IP packet that is sent to the switching unit through four 100M interfaces.
Backplane
The BUSN is the backplane of the resource shelf. As the universal service backplane, it can be inserted with multiple service processing modules to form the universal service processing subsystem.
The rear view of the BUSN is shown in Figure 22.
Introduction
Rear View
ZXWN MGW Media Gateway Hardware Description
32 Confidential and Proprietary Information of ZTE CORPORATION
F I G U R E 22 BUSN R E AR V I E W
The external interfaces of the BUSN are shown in Table 28.
T AB L E 28 E X T E R N AL I N T E R F AC E S O F T H E R E S O U R C E SH E L F
Interface ID Purpose Connection Relation
X1~X2 Power socket Connecting the busbar GND, -48V, -48 V GND, and GNDP
GE Switching Resource Shelf This section describes the GE switching resource shelf in the MGW cabinet.
This section includes the following topics.
T AB L E 29 TO P I C S I N GE SW I T C H I N G R E S O U R C E S H E L F S E C T I O N
Topics Page No.
Hardware Configuration 33
Functions and Principles 36
Backplane 38
External Interface
Overview
Contents
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 33
Hardware Configuration
This section describes the components of the GE switching resource shelf and the rules for inserting boards, and introduces configuration instances.
The BGSN is compatible with resource boards on the BUSN. Compared with the BUSN, the BGSN increases the quantity of GEs of the media plane, and supports 19GE switching. The GUIM (in slots 9 and 10) supports at most 64K switching, and provides two groups of GE optical interfaces that have optical interface active/standby protection function to connect to the GLI in order to implement the interconnection between the resource shelf and level-1 switching shelf.
The BGSN is the backplane of the GE switching resource shelf. The boards that can be configured and their configurations are shown in Table 30.
T AB L E 30 B O A R D C O N F I G U R AT I O N O N R E S O U R C E S H E L F
Logical Board Name
Physical Board Name
Configuration Description
GUIM GUIM GUIM boards must be configured, which adopt 1+1 active/standby working mode.
IPI MNIC
Configured when the Nb interface adopts the IP bearer. There are three types of boards: IPI (FE), IPI (GE optical interface), IPI (GE electrical interface).
Configured when the IM-MGW needs to provide the Mb and Mn interfaces.
Adopting 1+1 active/standby or load-sharing working mode.
APBE APBE Configured when the Iu, Nb and MC interfaces adopt the ATM bearer.
IWFB IWFB
Configured when it is required to provide transparent/nontransparent synchronous asynchronous data service, and nontransparent circuit switching data bearer service.
MRB MRB
Configured when it is required to provide TONE and voice sending, DTMF number sending/receiving, MFC number sending/receiving, and conference telephone functions.
Overview
Board Configuration
ZXWN MGW Media Gateway Hardware Description
34 Confidential and Proprietary Information of ZTE CORPORATION
Logical Board Name
Physical Board Name
Configuration Description
VTCD VTCD
The VMGW should be configured with at least two VTCD boards, which are used to encode the voice signal at the BSC and RNC sides, process the Iu-UP protocol, and encode the signal over IP.
The GMGW should be configured with the VTCD board when the signal over TDM or IP needs to be encoded.
DTEC, DTB DTEC
Configured when the Nb interface adopts the TDM bearer or when the Ai and A interfaces need to be provided, and used to implement E1 access.
SDTB SDTB
Configured when the Nb interface adopts the TDM bearer or when the Ai and A interfaces need to be provided, and used to implement STM-1 access.
Adopting 1+1 or 1:1 active/standby working mode.
SPB SPB
Configured when the Ai and A interfaces need to be provided, or when the MGW acting as the signaling gateway needs to perform inter-office SS7 signaling transfer.
OMP MPx86
When the single BGSN shelf configuration is adopted (that means there is only one resource shelf), a pair of boards is fixedly configured in the resource shelf. It adopts 1+1 active/standby working mode.
SMP MPx86
When the single BGSN shelf configuration is adopted (that means there is only one resource shelf), a system should be configured with signaling SMP and service SMP.
The signaling SMP adopts the load-sharing working mode, while the service SMP adopts the 1+1 active/standby working mode.
CLKG CLKG
When the single BGSN shelf configuration is adopted (that means there is only one resource shelf), a pair of boards is fixedly configured in the resource shelf. It adopts 1+1 active/standby working mode.
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 35
The rule for inserting boards to the slots in the resource shelf is as follows.
GUIM boards adopt the active/standby mode, and are fixedly configured in the slots 9 and 10.
APBE boards are configured in the slots 5~8 and slots 13~14.
IPI, SPB, SDTB, DTEC, DTB, VTCD, IWFB, and MRB boards are configured in the slots 1~8 and slots 11~17.
CLKG boards.
OMP boards adopt the active/standby mode, and are configured in the slots 11 and 12.
SMP boards are configured in the slots 13 and 14.
Three instances are given based on the following three situations.
Figure 23 shows the instance that the single shelf with pure TDM switching forms an office, which can be applied at the gateway office to interconnect with the 2G end office.
F I G U R E 23 S I N G L E -S H E L F OF F I C E W I T H P U R E TDM
Figure 24 shows the instance that the single shelf with TDM and IP switching forms an office, which can serve as 3G end office and 2G gateway office simultaneously.
F I G U R E 24 S I N G L E -S H E L F OF F I C E W I T H TDM AN D IP S W I T C H I N G
BGSN
R
GU
M
1
R
GU
M
2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
SD
TB
VT
CD
VT
CD
G
IM
G
IM
OM
P
OM
P
SM
P
SM
P
SIPI
C
L
KG
IW
F
Rear board
Front board
SD
TB
I
P
I
I
P
I
SIPI
C
L
KG
U U
R
MP
B
R
MP
B
RC
KG1
RC
KG2
Figure 25 and Figure 26 show the instance that multiple shelves with TDM and IP switching forms an office, which can serve as 3G end office and 2G gateway office simultaneously.
Rule for Inserting
Boards
Configuration Instances
ZXWN MGW Media Gateway Hardware Description
36 Confidential and Proprietary Information of ZTE CORPORATION
F I G U R E 25 BGSN1
BGSN
R
U
M1
RGI
M
2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
I
P
I
V
TC
D
V
TC
D
UI
M
UI
M
A
P
B
Rear board
Front board
VTCD
SIPI
VTCD E
A
P
B
E
I
P
I
SIPI
G G
G
F I G U R E 26 BGSN2
Functions and Principles
The GE switching resource shelf (BGSN) provides the external interfaces of the MGW for processing various access modes and related lower-layer protocols. It also provides various resource processing modules for processing wireless protocols.
The BGSN is compatible with resource boards on the BUSN. Compared with the BUSN, the BGSN increases the quantity of GEs of the media plane, and supports 19GE switching. The GUIM (in slots 9 and 10) supports at most 64K switching, and provides two groups of GE optical interfaces that have optical interface active/standby protection function to connect to the GLI in order to implement the interconnection between the resource shelf and level-1 switching shelf.
Figure 27 shows the principle of the resource shelf.
Functions
Principles
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 37
F I G U R E 27 GE S W I T C H I N G R E S O U R C E S H E L F P R I N C I P L E S
IBB/SDU/ABPM/UPCF
DTBDTB
IPCFIPI
UIMUIMT
Control flow 100MEthernet
8K 16M PP2SIWFBMRB
IP interfaceATM
interface
APBE/DTEC/SDTB
Media flow 100MEthernet
8M HW
Interconnecting control shelf CHUB
IBB/SDU/ABPM/UPCF
VTCD
E1 interface
BGSN: Multiple service processing modules can be inserted in it to form universal service processing subsystem.
GUIM: Completes Ethernet Level-2 switching inside the resource shelf, circuit domain TS multiplexing switching and resource shelf management. In addition, it provides external interfaces of the resource shelf, including the packet data interface (GE optical interface) connected with the core switching unit, circuit domain interface (optical interface) of the circuit switching unit and control plane data Ethernet interface of the distributed processing platform (six FEs). It also distributes the clock provided by the clock board to each board. The differences between the GUIM and UIMT are as follows.
The GUIM provides the 64K circuit switching, four pairs of TDM optical interfaces to the external. An optical interface offers 8K switching capacity.
The GUIM provides two groups of GE optical interfaces that have optical interface active/standby protection function to connect to the GLI in order to implement the interconnection between the resource shelf and level-1 switching shelf.
The GUIM provides the GE interface for all of the service slots.
APBE: Provides two 155 Mbps ATM optical interfaces, implements SAR of the 155 Mbps ATM AAL2 and AAL5, performs IP mapping for media stream payloads after the SAR processing and then forwards them through four FEs. The APBE provides access for the Iu-CS interface and ATM access for the Nb interface.
IMAB: Provides the 63-E1 IMA access function, implements the SAR of the 155 Mbps ATM AAL2 and AAL5, performs IP mapping for media stream payloads after the SAR processing and then forwards them through four FEs.
Description
ZXWN MGW Media Gateway Hardware Description
38 Confidential and Proprietary Information of ZTE CORPORATION
IPI: Provides the IP access for the Nb interface. It serves as the network interface board or packet data protocol processing board. Based on different requirements, the IPI provides three kinds of physical interfaces, the FE interface, GE electric interface, and GE optical interface.
DTEC: Provides the TDM mode for the Nb interface, or offers the A and Ai interfaces. It provides 32-channel E1/T1 physical interfaces, implements the Echo Cancellation (EC) function by installing the EC sub-card, and supports inter-office transparent transmission in Channel Associated Signaling (CAS) and Common Channel Signaling (CCS) modes. In addition, it extracts an 8 K synchronous clock from the line and transmits the clock to the clock board through a cable as a clock reference.
DTB: Provides the TDM mode for the Nb interface, or offers the A and Ai interfaces. It offers 32-channel E1/T1 physical interface for the system. It supports inter-office transparent transmission in CAS and CCS modes. In addition, it extracts an 8 K synchronous clock from the line and transmits the clock to the clock board through a cable as a clock reference.
VTCD: Serves as the voice coding/decoding board, and implements the voice coding/decoding, CS data service rate adaptation and UP protocol processing.
IWFB: Offers circuit switching data bearer service for the transparent/non-transparent synchronous or asynchronous data services and the nontransparent fax service. The processing capability is 60 channels.
MRB: Implements 480-channel media resource functions, mainly including Tone/Voice, DTMF detection/generation, MFC detection/generation and conference call. The service functions take 120 channels as one basic subunit and the software can make configurations based on the subunit. The conference call function supports the random configuration with each group consisting of three to 120 parties.
SDTB: Provides the standard optical trunk interface, the STM-1. It can process the CAS and CCS. Each board has the processing capability of 63 E1s or 84 T1s. When the SDTB is connected with the PSTN, the EC function is provided by inserting the EC sub-card.
SPB: Offers access for 16 E1 channels and processes MTP-2 protocol in SS7. The data are packed into the IP packet that is sent to the switching unit through four 100M interfaces.
Backplane
The BGSN is the backplane of the GE switching resource shelf. As the universal service backplane, it can be inserted with
Introduction
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 39
multiple service processing modules to form the universal service processing subsystem.
Figure 28 shows the rear view of the BGSN.
F I G U R E 28 BGSN R E AR V I E W
Table 31 shows the external interfaces of the BGSN.
T AB L E 31 E X T E R N AL I N T E R F AC E S O F T H E R E S O U R C E SH E L F
Interface ID Purpose Connection Relation
X1~X2 Power socket Connecting the busbar GND, -48V, -48 V GND, and GNDP
Level-1 Switching Shelf This section describes the level-1 switching shelf in the MGW cabinet.
This section includes the following topics.
T AB L E 32 TO P I C S I N LE V E L-1 S W I T C H I N G S H E L F S E C T I O N
Topics Page No.
Hardware Configuration 40
Functions and Principles 41
Backplane 42
Rear View
External Interface
Overview
Contents
ZXWN MGW Media Gateway Hardware Description
40 Confidential and Proprietary Information of ZTE CORPORATION
Hardware Configuration
This section describes the components of the level-1 switching shelf, and configuration rules of the boards with an example.
The backplane of Level-1 switching shelf is BPSN. The boards that can be configured and their configurations are shown in Table 33.
T AB L E 33 B O A R D C O N F I G U R AT I O N O F LE V E L -1 S W I T C H I N G S H E L F
Logical Board
Physical Board
Configuration Description
PSN PSN4V/8V Each shelf is fixedly configured with one pair of PSN boards, which adopt the load-sharing working mode.
UIMC UIM Each shelf is fixedly configured with a pair of UIMC boards, which adopt 1 + 1 active/standby working mode.
It is used for connecting the packet data of the resource shelf.
GLI GLIQV A pair of GLI boards must be configured, which adopt 1+1 active/standby working mode.
Rules for inserting boards are introduced below.
UIMC: Is fixedly inserted in the slots 15 and slot 16.
PSN: Is fixedly inserted in the slots 7 and slot 8.
GLI: Is inserted in the slots 1~6 and slots 9~14. At least one pair of GLI boards must be configured, which adopt 1+1 active/standby working mode.
Figure 29 shows the full configuration of the Level-1 switching shelf.
F I G U R E 29 LE V E L -1 S W I T C H I N G S H E L F CO N F I G U R AT I O N
Introduction
Board Configuration
Rule for Inserting
Boards
Configuration Instance
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 41
Functions and Principles
Level-1 switching shelf fulfils interaction for all data of timing, signaling, voice service and data service. It offers corresponding QoS functions for different subscribers according to service requirements.
Level-1 switching shelves use the high-speed switching backplanes. After making the decision on routing and forwarding physical interface data, network processing units send data to the switching network through high-speed switching connection of the backplane to complete the switching. Network processing units receive data from the switching network to complete the processing, and then send data through physical interfaces.
Figure 30 shows the principle of the Level-1 switching shelf.
F I G U R E 30 PR I N C I P L E O F LE V E L -1 S W I T C H I N G S H E L F
PSNUIMC
……
GLI GLI
Resource shelf
Ethernet
Control bus
8 K
Synchronization
Control center
2 × FE
Active Standby
CLKG
Active
Resource shelf
Standby
The function of each board is as follows:
BPSN: Backplane of the Level-1 switching subsystem, which connects such boards as PSN, GLI, and UIMC of the subsystem to constitute the Level-1 switching subsystem.
UIMC: Completes the control plane Ethernet switching between each board inside the shelf. It provides the interface to connect the main control shelf CHUB for the control plane interconnection of main control shelf.
PSN: Completes the packet data switching. It is a self-route Crossbar switching system, which completes the switching function in conjunction with the queue engine on the line interface board, and provides a 40 G/80 G user data switching capacity.
Functions
Principles
ZXWN MGW Media Gateway Hardware Description
42 Confidential and Proprietary Information of ZTE CORPORATION
GLI: Gigabit Ethernet interface line card of level-1 switching, which provides four GE interfaces (optical access) and accesses services from the UIMT or GUIM board to the level-1 switching platform.
Backplane
The backplane of Level-1 switching shelf in the PS domain is the BPSN.
Figure 31 shows the rear view of the BPSN.
F I G U R E 31 BPSN R E AR V I E W
DIP switch
Power connector
Board locating pin
Fastening screw at the back panel
Back board connector
Table 34 shows the external interfaces of the level-1 switching shelf.
T AB L E 34 E X T E R N AL I N T E R F AC E
Interface ID Purpose Connection Relation
X1~X3 Power socket Connecting the busbar GND, -48 V, -48 V GND, and GNDP
Introduction
Rear View
External Interface
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 43
Circuit Switching Shelf This section describes the circuit switching shelf in the MGW cabinet.
This section includes the following topics.
T AB L E 35 TO P I C S I N C I R C U I T S W I T C H I N G S H E L F S E C T I O N
Topics Page No.
Hardware Configuration 43
Functions and Principles 44
Backplane 45
Hardware Configuration
This section describes the components of the circuit switching shelf, and configuration rules of the boards with an example.
The backplane of circuit switching is BCSN. The boards that can be configured and their configurations are shown in Table 36.
T AB L E 36 B O A R D C O N F I G U R AT I O N O N C I R C U I T S W I T C H I N G S H E L F
Logical Board Name
Physical Board Name
Configuration Description
TSNB, ETSN or STSN
TSNB, ETSN or STSN
TSNB, ETSN or STSN boards must be configured, which adopt 1+1 active/standby working mode.
The TSNB board provides 64K switching network; the ETSN board provides 128K switching network; the STSN board provides 256K switching network.
UIMC UIM The UIMC boards must be configured, which adopt 1+1 active/standby working mode.
TFI TFI
At least one pair of TFI boards should be configured, which are sued to connect the circuit data of the resource shelf.
The TFI boards adopt 1+1 active/standby working mode.
CLKG CLKG
The CLKG boards must be configured, which adopt 1+1 active/standby working mode.
Only one pair of CLKG boards is used in one system.
Overview
Contents
Overview
Configuration
ZXWN MGW Media Gateway Hardware Description
44 Confidential and Proprietary Information of ZTE CORPORATION
The rule for inserting boards to the slots in the circuit switching shelf is as follows:
UIMC boards are fixedly configured in the slots 9 and 10.
TSNB, ETSN or STSN boards are fixedly configured in the slots 5 and 7.
One pair of TFI boards is configured in the slots 1 and 2 when the TSNB board with 64K switching network is configured; two pairs of TFI boards are configured in the slots 1~4 when the ETSB board with 128K switching network is configured. Each pair of TFI boards provides 8 cascade TDM optical interfaces, which can cascade 4 BUSNs.
CLKG boards are fixedly configured in the slots 15 and 16.
Figure 32 shows the architecture of circuit switching shelf.
F I G U R E 32 CO N F I G U R AT I O N O F C I R C U I T S W I T C H I N G SH E L F
Functions and Principles
Circuit switching shelf is configured for smooth capacity expansion of circuit switching network with a capacity of 64 Kb–256 Kb.
Figure 33 shows the principle of the circuit switching shelf.
Rule for Inserting
Boards
Architecture
Description
Principles
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 45
F I G U R E 33 PR I N C I P L E O F T H E C I R C U I T SW I T C H I N G S H E L F
(16*32 MHW)
100 M control flow Ethernet
TSNB/ETSN/STSN
LVDSDTU/ TCU
DTU/TCUDTU/ TCU
DTU/ TCU
(16* 32 MHW)
(16* 32 MHW)
(16* 32 MHW)
LVDSLVDS
LVDSTFI
TFI
TFITFI
TFITFI
TFITFI
UIMUIMC
Control center
CLKGCLKG Synchroniz
ation clock
Synchronization clock
Synchronization clock
Synchronization clock
NOTE: TSNB board connects a pair of TFIs, ETSN board connects two pairs of TFIs, and STSN board connects four pairs of TFIs.
BCSN: Bears the functional boards of the large-capacity circuit switching subsystem, interconnects different board signals and provides a 256 K circuit switching connection capacity.
TFI: Provides the optical interface for the large-capacity circuit switching subsystem, to connect the corresponding Level-2 resource subsystem.
TSNB, ETSN or STSN: Provides the 64K, 128K, and 256K circuit TS switching for the system. The circuit data are transmitted to the fiber interface board TFI inside the local shelf through the backplane of the 576 M LVDS.
CLKG: Provides the output clock for the entire system, and can implement Stratum 2 clock or Stratum 3 clock by changing the constant-temperature trough crystal oscillator and through the software. It provides 15-channel 16.384 M, 8 K and PP2S clocks for the UIM through cables, with each channel containing the same groups A and B. In addition, it provides 10-channel 32 M, 64 M and 8 K clocks for the T-network through the BCSN, and can select reference sources at the background or manually, including BITS, line (8 K), GPS and local (Stratum 2 or Stratum 3).
Backplane
Backplane of level-1 switching shelf is BCSN.
Figure 34 shows the rear view of BCSN.
Functions
Description
Rear View
ZXWN MGW Media Gateway Hardware Description
46 Confidential and Proprietary Information of ZTE CORPORATION
F I G U R E 34 RE A R V I E W OF BCSN
DIP switch
Power connector
Board locating pin
Fastening screw at the back panel
Back board connector
Table 37 shows external interfaces of circuit switching shelf.
T AB L E 37 E X T E R N AL I N T E R F A C E S OF C I R C U I T S W I T C H I N G S H E L F
Interface ID
Purpose Connection Relation
X1–X2 Power socket
Connected to GND, -48V, -48VGND and GNDP on bus-bar.
Busbar The busbar is located at the internal side of the cabinet.
For more convenient and flexible networking, the power supply distribution and the grounding of the ZXWN MGW system are transited through the busbar.
Figure 35 shows the structure of the busbar.
External Interfaces
Position
Function
Structure
Chapter 2 Shelves and Busbar
Confidential and Proprietary Information of ZTE CORPORATION 47
F I G U R E 35 BU S B AR S T R U C T U R E
-48V
PE
GND-48V
GND-48V
-48V
-48V
PE
GND-48V
GND-48V
-48V
-48V
GND-48V
PE
GND-48V
GND-48V
-48V
-48V
GND
PE
-48V
-48V
-48V
A
PE
-48VGND
-48VGND
-48V
-48V
-48VGND
PE
-48V
-48VGND
-48V
6:1A
-48V
PE
GND
-48V
-48V
PE
GND
GND-48V
-48V
The busbar is located at right side of the rear cabinet. The busbar provides six terminal groups. From upper to lower, group 1 and 6 provide four connection terminals respectively, corresponding to the signal of -48 V, -48 V GND, PE, and GND. Group1 connects to the power distribution shelf, supplying the power for the busbar. Group 6 only supplies the power to the third fan shelf. Group 2, 4 and 5 provide six connection terminal groups, corresponding to the signal of -48 V, -48 V GND, -48 V DC, -48 V GND, PE, and GND from upper to lower. These terminal groups supply the power to the fan shelves and the service shelves.
The PE interface connects to the protection ground.
The -48V power is output to the P power after being filtered by the two combined filters on the top of cabinet.
In addition, each shelf has a -48 V input power filter, to meet shielding and filtering requirements at shelf level.
For the integrated line connection of the power supply system of the cabinet, refer to Power Cables.
Reference
ZXWN MGW Media Gateway Hardware Description
48 Confidential and Proprietary Information of ZTE CORPORATION
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Confidential and Proprietary Information of ZTE CORPORATION 49
C h a p t e r 3
MGW Boards
Overview
This chapter describes the hardware structure of various circuit boards, functions, principles and structures of the CLKG, MPx86, MNIC, UIM, GUIM, SPB, VTCD, PSN4V/8V, GLIQV, DTB, CHUB, DTEC, TSNB, ETSN, TFI, SDTB, and PWRD boards.
This chapter includes the following topics.
T AB L E 38 TO P I C S I N C H AP T E R 3
Topics Page No.
MGW Board Specification 52
Clock Generator Board (CLKG) 56
CLKG Board Appearance 57
CLKG Board Working Principles 65
CLKG Board Functions 66
CLKG Board Technical Indices 67
Main Processing Board (MPx86) 67
MPx86 Board Appearance 68
MPx86 Board Working Principles 73
SMP Board Functions 74
OMP Board Functions 75
MPx86 Technical Indices 77
Multi-Function Network Interface Board (MNIC) 77
MNIC Board Appearance 77
MNIC Board Working Principles 83
SIPI Board Functions 86
MNIC Technical Indices 88
Universal Interface Module Board (UIM)
Introduction
Contents
ZXWN MGW Media Gateway Hardware Description
50 Confidential and Proprietary Information of ZTE CORPORATION
Topics Page No.
UIM Board Appearance 89
UIM Board Working Principle 92
UIMC Board Functions 93
UIMU Board Functions 93
UIMT Board Functions 94
UIM Technical Indices 95
Rear Boards of UIMC Board 96
Rear Board of UIMU or UIMT Board 97
GE Universal Interface Module Board (GUIM) 99
GUIM Board Appearance 99
GUIM Board Working Principle 104
GUIM Board Functions 104
GUIM Technical Indices 105
Signaling Processing Board (SPB) 105
SPB Board Appearance 106
SPB Board Working Principles 111
SPB Board Functions 113
SPB Technical Indices 113
ATM Process Board (APBE) 113
APBE Board Appearance 114
APBE Board Working Principles 119
APBE Board Functions 119
APBE Technical Indices 120
Inter-Working Function Board (IWFB) 120
IWFB Board Appearance 120
IWFB Board Working Principles 124
IWFB Board Functions 125
IWFB Board Technical Indices 125
Media Resource Board (MRB) 126
MRB Board Appearance 126
MRB Board Working Principles 129
MRB Board Functions 130
MRB Board Technical Indices 131
Voice Transcoder Card (VTCD) 131
VTCD Board Appearance 132
VTCD Board Working Principles 136
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 51
Topics Page No.
VTCD Board Functions 137
VTCD Board Technical Indices 137
IP Packet Switching Network Board (PSN4V/PSN8V) 137
PSN4V/PSN8V Board Appearance 137
PSN4V/PSN8V Board Working Principles 140
PSN4V/PSN8V Board Functions 141
PSN4V/PSN8V Technical Indices 141
2.5G Line Interface Board (GLIQV) 142
GLIQV Board Appearance 142
GLIQV Board Working Principles 146
GLI Board Functions 146
GLIQV Technical Indices 147
Digital Trunk Board (DTB) 147
DTB Board Appearance 147
DTB Board Working Principles 153
DTB Board Functions 154
DTB Board Technical Indices 155
Digital Trunk Board with EC Function (DTEC) 155
DTEC Board Appearance 155
DTEC Board Working Principles 161
DTEC Board Functions 162
DTEC Board Technical Indices 163
Control Plane Interconnection Board (CHUB) 163
CHUB Board Appearance 163
CHUB Board Working Principles 168
CHUB Board Functions 169
CHUB Technical Indices 169
TDM Switch Network Board (TSNB) 169
TSNB Board Appearance 169
TSNB Board Working Principles 173
TSNB Board Functions 174
TSNB Board Technical Indices 174
Enhanced TDM Switch Network Board (ETSN) 174
ETSN Board Appearance 174
ETSN Board Working Principles 178
ETSN Board Functions 179
ZXWN MGW Media Gateway Hardware Description
52 Confidential and Proprietary Information of ZTE CORPORATION
Topics Page No.
ETSN Board Technical Indices 179
Advanced TDM Switch Network Board (STSN) 179
STSN Board Appearance 179
STSN Board Working Principles 183
STSN Board Functions 184
STSN Board Technical Indices 184
TDM Fiber Interface (TFI) 184
TFI Board Appearance 184
TFI Board Working Principles 187
TFI Board Functions 188
TFI Board Technical Indices 188
SONET Digital Trunk Board (SDTB) 188
SDTB Board Appearance 188
SDTB Board Working Principles 194
SDTB Board Functions 195
SDTB Board Technical Indices 195
Power Distribution Board (PWRD) 196
PWRD Board Appearance 196
PWRD Board Working Principles 198
PWRD Board Function 199
PWRD Board Technical Indices 199
Corresponding Interface Board 200
MGW Board Specification The hardware of a board includes PCB board, sub-card, panel components (including indicators, extractor and EMC spring plate). Figure 36 shows the structure of a circuit board.
Structure
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 53
F I G U R E 36 C I R C U I T B O AR D S T R U C T U R E
4
2 3 1
T AB L E 39 L A B E L S I N M O D U L E S T R U C T U R E
Label Description
1 Front PCB board
2 Components on front panel
3 Sub-card 1
4 Sub-card 2
In the MGW system, there are the following boards based on their different functions.
Interface processing boards provide interfaces between the MGW system and external system, and processes partial protocols as required.
Protocol processing boards implement the processing of respective protocol.
Main control boards control and manage the system, and connects the system to the background.
Intra-shelf interconnected boards implement interconnection of boards in a shelf.
Inter-shelf interconnected boards implement the cascade connection between shelves.
Switching boards provide the IP packet or circuit switching function. All of the boards in the MGW system support the hot swap except the PWRD board.
Table 40 lists the circuit boards used in the MGW system.
Board Function
ZXWN MGW Media Gateway Hardware Description
54 Confidential and Proprietary Information of ZTE CORPORATION
T AB L E 40 C I R C U I T B O AR D S W I T H TH E I R AB B R E V I A T I O N S
Type Abbreviation Board Name
APBE ATM access processing board
DTB/DTEC Digital Trunk Board
SDTB Sonet Digital Trunk Board
IWFB Inter-Working Function Board
Interface processing unit
MNIC Multi-service Network Interface Card
ETSN Enhanced TDM Switch Network Board
TSNB TDM Switch Network Board
Switching board
PSN4V/8V IP Packet Switching Network Board
Protocol processing board
SPB Signaling Processing Board
CLKG CLOCK Generator Main control module
MPx86 Main Processing Board
UIM Universal Interface Module Intra-shelf interconnection board GUIM GE Universal Interface Module
GLIQV 2.5G Line Interface Board
TFI TDM Fiber Interface
Inter-shelf Interconnection board
CHUB Control HUB Board
MRB Media Resource Board Other functional boards
VTCD Voice Transcoder Card
A number of patterns indicating components are used in the board descriptions, as shown in Table 41.
T AB L E 41 B O A R D C O M P O N E N T S
Name Pattern Description
(1)
The front view of the serial port in the pull-down panel diagram of a circuit board (viewed from the front of the panel of the circuit board). The view in the DIP switch and jumper schematic diagram of the circuit board is (2).
Serial Port (RJ45)
(2)
The front view of the serial port in the DIP switch and jumper schematic diagram of a circuit board (viewed from the side of the circuit board). The view in the pull-down panel diagram of the circuit board is (1).
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 55
Name Pattern Description
ON1 2
3 4
5 6
7 8
ON1 2
3 4
( 1 )
The front view of 8- and 4-position DIP switches in the pull-down panel diagram of a circuit board (viewed from the front of the panel of the circuit board). The view in the DIP switch and jumper schematic diagram of the circuit board is (2).
1 2
3 4
5 6
7 8
1 2
3 4
(2)
The front view of 8- and 4-position DIP switches in the DIP switch and jumper schematic diagram of a circuit board (viewed from the side of the circuit board). The view in the pull-down panel diagram of the circuit board is (1).
DIP Switch
OFF ON
OFF ON
The side view of 8- and 4-position DIP switches in the DIP switch and jumper schematic diagram of a circuit board (viewed from the side of the circuit board). There is no corresponding view for such DIP switches in the pull-down panel diagram of the circuit board. The patterns for a DIP switch on other positions are similar to this view. In the pattern, black blocks indicate the positions where the DIP switch is set. “OFF” indicates that the DIP switch is set to “OFF” by default. “ON” indicates that the DIP switch is set to “ON” by default.
(1)
The front view of the reset switches in the pull-down panel diagram of a circuit board (viewed from the front of the panel of the circuit board). The view in the DIP switch and jumper schematic diagram of the circuit board is (2).
(2)
The front view of the reset switch in the DIP switch and jumper schematic diagram of a circuit board (viewed from the side of the circuit board). The view in the pull-down panel diagram of the circuit board is (1).
Reset switch
The front view of the reset switch in the DIP switch and jumper schematic diagram of a circuit board.
ZXWN MGW Media Gateway Hardware Description
56 Confidential and Proprietary Information of ZTE CORPORATION
Name Pattern Description
Jumper
The front view of the jumper in the DIP switch and jumper schematic diagram of a circuit board (viewed from the side of the circuit board). The left view indicates that, by default, the jumper is set to short. The right view indicates that, by default, the jumper is broken. Other jumpers are similar to these views.
Fiber inlet
The front view of the fiber inlet in the pull-down panel diagram of a circuit board (viewed from the front of the panel of the circuit board).
STM-1 high-speed coaxial cable inlet
The front view of the high-speed coaxial cable inlet in the pull-down panel diagram of a circuit board (viewed from the side of the circuit board).
Note:
In the description of the functions of DIP switches or jumpers, if a function is described as “reserved”, it indicates that the corresponding DIP switch or jumper is limited by the ZXWN MGW system. Then, only the default settings can be used.
When the circuit board is equipped with large-scale Integrated Circuit (IC), always remember to protect against static during operation. Follow the operational rules strictly to prevent any damage of circuit board caused by static.
As the board itself consumes lots of power, always keep good ventilation to blow away heat.
Clock Generator Board (CLKG) This section describes the CLKG board.
Precautions
Introduction
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 57
This section includes the following topics:
T AB L E 42 TO P I C S I N CL O C K GE N E R AT O R B O AR D (CLKG) S E C T I O N
Topics Page No.
CLKG Board Appearance 57
CLKG Board Working Principles 65
CLKG Board Functions 66
CLKG Board Technical Indices 67
CLKG Board Appearance
The CLKG board is the clock generator board in the system.
The front and side view of the CLKG board are shown in Figure 37 and Figure 38.
Contents
Overview
Outside View
ZXWN MGW Media Gateway Hardware Description
58 Confidential and Proprietary Information of ZTE CORPORATION
F I G U R E 37 PAN E L O F T H E CLKG
2Mbps1
2MHz1
8K1
8K3
QUTD
ENUM
ACT
CLKG
2MHz2
2Mbps2
NULL
MANI
MANSL
MANEN
8K2
ALM
RUN
EXCH
TRACE
KEEP
FREE
CATCH
RST
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 59
F I G U R E 38 LAY O U T O F T H E CLKG C I R C U I T B O AR D
X40X41 X42
X43
X48
X50
X60
X53X54 X56 X55
X45
X44
X47
X46
NOTE: The block in the jumper indicates pin 1 in the following descriptions.
There are 18 indicators on the panel of the CLKG. Their meanings are described in Table 43.
T AB L E 43 I N D I C AT O R S O F CLKG B O AR D
Name Color Indication Description
RUN Green RUN indicator Flash: board is normal.
Long-time on: The crystal is pre-heating.
Off: board is abnormal.
Indicators
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Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: board is active.
Off: board is standby.
ALM Red Alarm indicator
The indicator is on when the board detects an error in the SRAM and output clock lost.
CATCH Green Catch indicator
When the indicator is on, it indicates that the board is currently in the catch status, that is, having reference, and unlocked.
TRACE Green Trace indicator When the indicator is on, it indicates that the board is currently in the trace status, that is, having reference, and locked.
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Name Color Indication Description
KEEP Green Keep indicator When the indicator is on, it indicates that the board has been locked, but the midway reference is lost.
FREE Green Free running indicator
When the indicator is on, it indicates that the board is in free running status, that is, the board is not locked to any inference, and no reference is available.
2Mbps1 Green Reference indicator
It is used to indicate the clock reference selected in the CLKG board. When the indicator is on, it indicates the reference is the first channel 2M clock provided by BITS equipment and transmitted in HDB3 code.
2Mbps2 Green Reference indicator
It is used to indicate the clock reference selected in the CLKG board. When the indicator is on, it indicates the reference is the second channel 2M clock provided by BITS equipment and transmitted in HDB3 code.
2MHz1 Green Reference indicator
It is used to indicate the clock reference selected in the CLKG board. When the indicator is on, it indicates the reference is the first channel 2M clock, provided by BITS equipment and transmitted in TTL differential mode.
2MHz2 Green Reference indicator
It is used to indicate the clock reference selected in the CLKG board. When the indicator is on, it indicates the reference is the second channel 2M clock provided by BITS equipment and transmitted in TTL differential mode.
8K1 Green Reference indicator
It is used to indicate clock reference selected in the CLKG board. When the indicator is on, it indicates the reference is line 8k Hz clock provided by such boards as the DTEC, APBE, SDTEC, and SPB.
8K2 Green Reference indicator
It is used to indicate clock reference selected in the CLKG board. When the indicator is on, it indicates the reference is 8k Hz clock provided by the GPS module.
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Name Color Indication Description
8K3 Green Reference indicator
It is used to indicate clock reference selected in the CLKG board. When the indicator is on, it indicates the reference is 8k Hz clock provided by the UIMC board.
NULL Green Reference indicator
It is used to indicate clock reference selected in the CLKG board. When the indicator is on, it indicates there is no external reference available currently.
QUTD Red Reference deterioration indicator
On: indicating reference deterioration.
MANI Green Indicator for allowing manually selecting reference
On: The reference can be selected manually.
Off: The reference cannot be selected manually.
Table 44 shows the buttons on the CLKG board.
T AB L E 44 B U T T O N S O N CLKG B O AR D
Button Name Description
EXCH Performs active/standby changeover of the CLKG board.
RST Resets the CLKG board.
MANSL Manually selects external 8K clock reference.
MANEN Enable manual selection of external 8K clock reference.
Figure 38 shows the jumper location.
X40~X41, X44~X45: selection of the first 2M bit/s and 2M Hz matching impedance of BITS clock.
When Pin 1 and Pin 2 are short-circuited, it means the matching impedance is 75 Ω.
When Pin 2 and Pin 3 are short-circuited, it means the matching impedance is 120 Ω.
X42~X43, X46~X47: selection of the second 2M bit/s and 2M Hz matching impedance of BITS clock.
When Pin 1 and Pin 2 are short-circuited, it means the matching impedance is 75 Ω.
When Pin 2 and Pin 3 are short-circuited, it means the matching impedance is 120 Ω.
Buttons
Jumpers
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X53~X56: grounding protection jumper of coaxial cable shell for inputting two 2M bit/s and 2M Hz clocks.
When 1 and 2 are short-circuited, it means the cable sleeve is connected to the protection ground.
X48 and X50 are for debug use, disconnected at ordinary times.
X60 is the jumper of RS485 connection relation.
During debugging, download data through serial ports of the computer; 3-5 and 4-6 are short-circuited.
When communicating with the background through the RS485 at ordinary times, 1-3 and 2-4 are short-circuited.
Note:
Block of upper jumper hint in Figure indicates pin 1. The following layout diagrams are drawn according to the same principle.
The corresponding rear board of the CLKG is RCKG1 and RCKG2. The RCKG1 board must be configured, while the RCKG2 board is optional according to the requirements.
Its panel is shown in Figure 39.
Corresponding Rear Board
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F I G U R E 39 PAN E L D I AG R A M O F T H E RCKG1 AN D RCKG2
RCKG1
8KIN
1
CLK
OU
TP
P2S
/16C
HIP
2Mbp
s/2M
Hz
8KIN
2
CLK
OU
T
CLK
OU
T
CLK
OU
T
RCKG2
CLK
OU
T
The interfaces on the RCKG1 and RCKG2 are as shown in Table 45.
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T AB L E 45 I N T E R F AC E S O N RCKG1 AN D RCKG2
Name Description
CLKOUT (DB44 interface)
Providing 3-set 8K/16M/PP2S system clock output interfaces, which are usually output to the UIM. For RCKG1 and RCKG2, there are five CLKOUT interfaces in total, that is, the CLKG board can provide up to 15-set 8K/16M/PP2S system clock output interface.
8KIN1 and 8KIN2 (RJ45 interface)
The input interfaces of the 8 K reference clock, accessing the 8 K reference clock provided by the DTEC, SPB, APBE, SDTEC, and GPS.
2 Mbps/2 MHz (DB9 interface)
Accessing two-channel 2 Mbps or 2 MHz reference clock.
PP2S/16CHIP (RJ45 interface)
Providing the input interface of the P2S/16CHIP reference clock from the GPS.
The CLKG has the following external interfaces.
15 sets of 8K/16M/PP2S system clock output interfaces
Two sets of 8 K reference input interfaces for the DTEC, SPB, APBE and SDTEC
Two sets of 2 Mbps and 2 MHz reference input interfaces
One set of PP2S and 16CHIP reference input interface for GPS module
CLKG Board Working Principles
Figure 40 shows the schematic diagram of the CLKG.
F I G U R E 40 SC H E M AT I C D I AG R AM O F CLKG
Local crystal oscillator
Active/Standby changeover circuit
CPU sub-system
Phase-locked loop
frequency synthesis
circuit
PP2S transceiver
circuit
RS485
Changeover signal input Changeover signal output
Reference clock signal input PP2S signal output
Reference selection
Reference test
8K, 16K, 32M and 64M clock signal
GPS, circuit 8K
2MHz, 2MBit/s
16CHIP, PP2S
Schematic Diagram
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The CLKG board communicates with the main control unit through the RS485.
The following clocks can serve as the local clock reference.
The clock reference 8 KHz frame synchronizing signal from the SPB
The 2MHz / 2Mbit/s signal from the BITS system
The 8 k (PP2S, 16CHIP) clock signal from the GPS equipment
The 8 kHz clock signal from the UIM board, synchronizing with the upper-level office clock when it serves as the local clock reference.
The CLKG can perform deterioration judgment on these input references. If the reference is lost, the CLKG will generate corresponding alarm signal.
The CLKG conducts the phrase lock after selecting one channel of input reference clock from the input clocks, and outputs the 16M frame header signal meeting the time sequence requirements. And it assigns this signal to the UIM board by balancing the drive. For the received PP2S and 16 CHIP signals, it obtains the new PP2S signal through the pulse broadening, and then distributes this new signal to the UIM. The frame lock system adopts the loose coupling phase-locked principle.
CLKG Board Functions
The CLKG board provides the required clock for the MGW system. With the hot active/standby design, the active and standby CLKG boards are locked to the same reference to implement smooth changeover. The CLKG adopts a measure to filter out jitters to remove possible burrs or jitters of the clock during the changeover.
The CLKG has the following functions:
Communicate with the control console through the RS485 bus.
Allow to select reference sources in the background or manually, including the BITS, line (8 K), GPS, and local (level-2 or level-3). Manual switchover can be shielded through software. The sequence for selecting references manually is:
2 Mbit/s1-2 Mbit/s2-2 MHz1-2 MHz2-8 K1-8 K2-8 K3-NULL
Adopt the loose coupling phase-locked system, working in four modes: CATCH, TRACE, HOLD and FREE
The output clock can be level 2 or level 3, implemented by changing the constant-temperature crystal oscillator and corresponding software.
Processing Flow
Overview
Functions
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Provide 15-channel 16.384 M, 8 K and PP2S clocks to the UIMC.
Be capable of clock lost alarming and deterioration judgment of inputted reference.
Be capable of active/standby changeover function with the hot active/standby design. The active and standby CLKG boards are locked to the same reference to implement smooth changeover. The CLKG adopts the measure of filtering out phase jitters to remove possible burrs or jitters of the clock during changeover. Provide such modes as the command changeover, manual changeover, fault changeover, and reset changeover. The Bit Error Ratio (BER) effect on the system during maintenance changeover is less than 1%.
The discontinuity between phases of two CLKG boards is less than 1/8 UI code element.
Provide relatively sound alarm function, including SRAM failure alarm, constant-temperature trough alarm, reference and output clock loss alarm, reference deterioration alarm, reference frequency deviation exceeding standard alarm and phase-locked loop phase detection loss alarm. These alarms facilitate to quickly detect the current working status and failure location of the clock generating board.
The clock is maintainable. The VCXO provides the frequency modulation knob to facilitate frequency modulation when the axis frequency deviates in a certain range due to the aging of quartz crystal several years later.
CLKG Board Technical Indices
16 W
Supported
Main Processing Board (MPx86) This section describes the MPx86 board.
This section includes the following topics.
T AB L E 46 TO P I C S I N M AI N P R O C E S S I N G B O AR D (MP X 86) S E C T I O N
Topics Page No.
MPx86 Board Appearance 68
Power Consumption
Hot Swap
Introduction
Contents
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Topics Page No.
MPx86 Board Working Principles 73
SMP Board Functions 74
OMP Board Functions 75
MPx86 Technical Indices 77
MPx86 Board Appearance
In the MGW system, the MPx86 board serves as two functional units, the OMP and the SMP.
Figure 41 shows its front view, and Figure 42 shows its circuit board layout.
Overview
Outside View
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Confidential and Proprietary Information of ZTE CORPORATION 69
F I G U R E 41 PAN E L D I AG R A M O F MPX 86 B O AR D
OMP SMP
USB1 USB2 USB2USB1
ENUM2 RUN2
OMC1
HD1 HD2
OMC2
ACT2EXCH2
ALM2
EXCH1
RST
ENUM1
ACT1 ALM1
RUN1
ENUM2 RUN2
ALM2
HD2
EXCH2
HD1
ACT2
RUN1
EXCH1ALM1
RST
ACT1
ENUM1
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F I G U R E 42 LAY O U T D I AG R AM O F MP X 86 C I R C U I T B O AR D
CPU_A
CPU_B
Power Module
X8
Hard Disk
Hard Disk
NOTE: When the MPx86 Board serves as the OMP, there is only a hard disk on the lower right of the circuit board. When it serves as the SMP, there are two hard disks.
Table 47 shows indicators on the MPx86 board.
T AB L E 47 I N D I C AT O R S O N T H E MP X86 BO AR D
Name Color Name Description
ALM1 Red Alarm indicator of the CPU subsystem A
On: An alarm exists on the board.
Off: No alarm is generated on the board.
RUN1 Green Run indicator of the CPU subsystem A
During power-on, the run indicator flashes at 5 Hz.
After successful power-on, the run indicator flashes at 1 Hz.
If the power-on fails, the run indicator keeps flashing at 5 Hz.
ACT1 Green Active/standby indicator of the CPU subsystem A
On: active.
Off: standby.
Indicators
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Name Color Name Description
ENUM1
Yellow Board extraction indicator of the CPU subsystem A
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ALM2 Red Alarm indicator of the CPU subsystem B
On: An alarm exists on the board.
Off: no alarm exists on the board.
RUN2 Green Run indicator of the CPU subsystem B
If the indicator flashes slowly, it indicates that the board runs normally.
ACT2 Green Active/standby indicator of the CPU subsystem B
On: active.
Off: standby.
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Name Color Name Description
ENUM2
Yellow Board extraction indicator of the CPU_B
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is being powered on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
OMC1 Green OMC Ethernet indicator at background of subsystem A
On: OMC1 Ethernet port at the background of the rear board can be pinged through.
Off: OMC1 Ethernet port at the background of the rear board cannot be pinged through.
OMC2 Green OMC Ethernet indicator at the background of subsystem B
On: OMC2 Ethernet port at the background of the rear board can be pinged through.
Off: OMC2 Ethernet port at the background of the rear board cannot be pinged through.
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Name Color Name Description
HD1 Red Hard disk indicator of subsystem A
On: hard disk in the subsystem A is working.
Off: Hard disk in the subsystem A is not working.
HD2 Red Hard disk indicator of subsystem B
On: hard disk in the subsystem B is working.
Off: hard disk in subsystem B is not working.
Table 48 shows buttons on the MPx86 board panel.
T AB L E 48 P AN E L B U T T O N S O N MP X 86 B O A R D
Name Description
RST Resets the MPx86 board.
EXCH1 Performs active/standby changeover of the system A.
EXCH2 Performs active/standby changeover of the system B.
There is an X8 jumper on the MP module, as shown in Figure 42.
The X8 jumper is used for selecting the Debug version or Release version.
Short-circuited: Debug version
Not short-circuited: Release version.
MPx86 Board Working Principles
In the MGW system, an MPx86 module can be used as two functional units, the OMP and the SMP.
Figure 43 shows the principle of the MPx86 circuit board.
Buttons
DIP Switches and Jumpers
Overview
Schematic Diagram
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F I G U R E 43 SC H E M AT I C D I AG R AM O F T H E MP X 86 B O AR D
BACKPLANE
Panel
Pow
er m
anagement
Logical time sequence adjustment
and control management
CPU sub-system 1
PCI bus
Bridge slice2*USB
IDE
Ethernet interface
circuitBIOS
Periphery memory Serial port chip
RS232
Power management 485
Backplane ID
GPS management 485
Backup RS485
Control flow Ethernet
Media flow Ethernet
OMC Ethernet
Active/Standby Ethernet
Logical time sequence adjustment
and control management
CPU sub-system 2
BIOS
Control flow Ethernet
Media flow Ethernet
OMC Ethernet
Active/Standby Ethernet
PCI bus
Ethernet interface
circuit
There are two sets of CPU systems on one MPx86 board, individually called CPU_A and CPU_B. Two CPU systems are independent from each other. The CPU_A is the main control CPU system, managing the circuit boards. When the MPx86 board serves as the OMP board, the CPU_A conducts as the RPU module, while CPU_B serves as the OMP module.
Besides two CPU systems, there is a public power supply on the board to supply power to the whole board. The MPx86 board also provides externally the control flow, media flow, active/standby Ethernet and OMC Ethernet, power management 485, GPS 485 and UIM-communication 485 interfaces.
SMP Board Functions
The MPX86 board has powerful processing ability. Configured with bulk memory as high as 2G, the MPX86 board also provides many external interfaces such as IDE, 10/100M Ethernet, RS485, RS232 and USB interfaces. The MPx86 board uses the standard PCI bus to connect with other peripheral equipments and supports MP active/standby switchover function. It has control register and data register to set the functions of the board through the main control software and exchange the working status data.
When the MPX86 board is used as the SMP board, it completes the bearer control function, and processes various kinds of signaling. When the SGW function is built in the MGW, it completes the conversion of various kinds of signaling, such as the inter-working between the SCN and IP domains.
When MPx86 serves as the SMP, its corresponding rear board is a blank panel.
Working Principles
Functions
Corresponding Rear Board
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 75
OMP Board Functions
Serving as the OMP, the MPx86 module is responsible for processing the overall procedure and implementing the control related to the operation and maintenance of entire system (including operation and maintenance agent). In addition, it connects with the OMC through the 100M Ethernet port, implementing the separation between internal and external network segment. As the processing core of MGW operation and maintenance, the OMP directly or indirectly supervises and manages boards in the system.
When the MPX86 board is used as the OMP board, it is responsible for the global process and implements the control functions (including the operation and maintenance agent) related with the operation and maintenance of the whole system. Connected with the OMC through the 100M Ethernet port, the OMP board implements the isolation between the internal network section and the external one. The OMP also acts as the operation and maintenance core of the MGW, directly or indirectly monitoring and managing the boards in the system.
When the MPx86 serves as the OMP, its corresponding rear board is the RMPB.
Figure 44 shows the corresponding panel of the RMPB board.
Functions
Corresponding Rear Board
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F I G U R E 44 PAN E L D I AG R A M O F T H E RMPB
RMPB
PD
485
DE
BU
G1-
232
DE
BU
G2-
232
RS
232
GP
S48
5O
MC
2O
MC
1
The interfaces on the RMPB are described as follows:
OMC1 and OMC2 (FE interface): connects with the background maintenance system. Usually, only the OMC2 is used.
DEBUG1-232 and DEBUG2-232: are used for the test, and does not provide the service functions.
PD486 (RJ45 interface): connects with the RS485 interface of the PWRDB on the power distribution shelf. It receives the alarm information monitored by the PWRN, including the
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Confidential and Proprietary Information of ZTE CORPORATION 77
power, fan, access control and environment alarm information.
GPS485: is used to connect with the GPS module for communication.
RS232 (RJ45 interface): is responsible for the out-of-band management of OMP.
MPx86 Technical Indices
45 W
Supported
Multi-Function Network Interface Board (MNIC) This section describes the MNIC board.
This section includes the following topics.
T AB L E 49 TO P I C S I N M U L T I -FU N C T I O N N E T W O R K I N T E R F AC E B O AR D (MNIC) S E C T I O N
Topics Page No.
MNIC Board Appearance 77
MNIC Board Working Principles 83
IPI Board Functions 84
SIPI Board Functions 86
MNIC Technical Indices 88
MNIC Board Appearance
In the ZXWN MGW system, the MNIC circuit board serves as the logical board of the SIPI and IPI boards. There are five types of IPI boards according to different interfaces.
IPI board providing the FE interface (IPI (FE) for short)
IPI board providing the GE optical interface (IPI (GE optical) for short)
IPI board providing the GE electric interface (IPI (GE electric) for short)
Power Consumption
Hot Swap
Introduction
Contents
Overview
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78 Confidential and Proprietary Information of ZTE CORPORATION
IPI board providing the 155M POS interface (IPI (POS155M) for short)
IPI board providing the 622M POS interface (IPI (POS622M) for short).
Figure 45 shows the front panel of the SIPI board.
F I G U R E 45 S IP I OU T S I D E V I E W
SIPI Outside View
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Figure 46 and Figure 47 show five types of the IPI board.
From left to right, Figure 46 shows the IPI (FE), IPI (GE optical) and IPI (GE electrical) boards, while Figure 47 shows the IPI (POS155M) and IPI (POS622M) boards.
F I G U R E 46 MNIC B O AR D P AN E L (1 )
IPI Outside View
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F I G U R E 47 MNIC B O AR D P AN E L (2 )
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Confidential and Proprietary Information of ZTE CORPORATION 81
Table 50 describes the indicators on the MNIC board panel.
T AB L E 50 I N D I C AT O R S O N MNIC P AN E L
Name Color Indication Description
RUN Green RUN indicator During the power-on, the run indicator flashes at 5 Hz.
After successful power-on, the run indicator flashes at 1 Hz.
If the power-on fails, the run indicator constantly flashes at 5 Hz.
ALM Red Alarm indicator
ON: An alarm exists on the board.
OFF: no alarm exists on the board.
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
Indicators
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Name Color Indication Description
ACT Green Active/standby indicator
On: The board is active.
Off: The board is standby.
LINK1 Green Status indicator of external 100 M access network port 1
On: The external 100M access network port 1 is connected.
Off: The external 100 M access network port 1 is not connected.
LINK2 Green Status indicator of external 100 M access network port 2
On: The external 100 M access network port 2 is connected.
Off: The external 100 M access network port 2 is not connected.
LINK3 Green Status indicator of external 100 M access network port 3
On: The external 100 M access network port 3 is connected.
Off: The external 100 M access network port 3 is not connected.
LINK4 Green Status indicator of external 100 M access network port 4
On: The external 100 M access network port 4 is connected.
Off: The external 100 M access network port 4 is not connected.
ACT (upper)
Green Active/standby indicator
ON: The board is active.
OFF: The board is standby.
ACT (Below)
Green Optical interface activation indicator
Indicating whether the optical interface is activated at present.
SD Green Optical signal indicator
Indicating whether the optical interface has received optical signals.
Table 51 shows the buttons on the MNIC panel.
T AB L E 51 B U T T O N S O N MNIC M O D U L E
Name Description
RST Resets the MNIC board
EXCH Performs active/standby changeover of the MNIC board.
There is no jumper or DIP switch on the MNIC board.
The MNIC board offers different interfaces externally when it serves as different boards.
Button Description
DIP Switch and Jumper
External Interface
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When it serves as the SIPI board, the MNIC board does not provide interface externally.
When it serves as IPI (FE) or IPI (GE electric), the MNIC board provides the interface through the rear board.
When it serves as IPI (GE optical), its panel provides a GE optical interface.
When it serves as IPI (POS155M), its panel provides four 155M optical interfaces. The first and second channels of the optical interface are mutually active/standby protected, and the third and fourth channels of the optical interface as well. It provides two groups of 155M SDH optical interfaces.
When it serves as IPI (POS622M), its panel provides two 622M optical interfaces. The first and second channels of the optical interface are mutual active/standby protection. It provides one group of 622M SDH optical interfaces.
MNIC Board Working Principles
Figure 48 shows the principles of the MNIC board.
F I G U R E 48 SC H E M AT I C D I AG R AM O F MNIC B O AR D
PCI
bus
Inte
rnal
bus
The MNIC board consists of the network processor subsystem, physical interface part, and CPU subsystem. The minimum network processor system and Ethernet interface part are placed on the backplane. The CPU unit adopts the mode of sub-cards. Data transmission between the sub-cards and the network processor is performed through the PCI bus and internal buses.
Schematic Diagram
Working Principles
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CPU sub-card and Ethernet chips are peripheral devices on the PCI bus of the network processor. Sub-cards are connected in standard mode. One of two Ethernet chips serves as a data backup channel. If the CPU sub-card exists, the data backup channel is provided by the CPU and needs no installation. If the CPU sub-card does not exist, this channel is used for active/standby data backup. Another Ethernet chip serves as a control flow channel to communicate with the UIMC. In addition, it can be used to debug and download codes.
IPI Board Functions
In the ZXWN MGW system, the MNIC circuit board serves as the SIPI and IPI logical boards.
When it serves as the IPI interface module, it works in 1+1 backup or load-sharing mode.
The IPI provides a physical interface to external IP network. For the IP data accessed to the system, it first processes the bottom-layer protocol. It forwards service flow data of a user plane to the corresponding internal processing boards through the media flow switching Ethernet, based on the destination address routes of the IP data packets. In addition, the IPI also performs such protocol processing as the IP data filtering and the NAT translation to protect internal IP communication.
Following are the functions of IPI board.
Providing 1×100M control flow Ethernet interface
Providing 1×100M Ethernet interface for the communication between active and standby boards
Providing 4×100M or 1×100M Ethernet interface internally
Providing RS485 backup control channel interfaces
Supporting 1+1 active/standby logical control of the board
Providing at most four 100M and one 1000M Ethernet interfaces, two groups of 155M POS interfaces (optical interface active/standby protection), or one group of 622M POS interface (optical interface active/standby protection).
The MGW system supports five types of IPI boards (FE, GE optical, GE electric, 155M POS and 622M POS interfaces), which provides different interfaces externally. Rear boards of each board are as follows.
IPI (GE optical), IPI (POS155M), and IPI (POS622M) have no rear board. Its panel provides the external optical interfaces. For detailed contents, refer to MNIC Board Appearance.
The RMNIC board is the rear board of the IPI (FE).
The RGER board is the rear board of the IPI (GE optical).
Figure 49 shows the panel diagram of the RMNIC and RGER.
Introduction
Functions
Function Indices
Corresponding Rear Board
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F I G U R E 49 RGER P AN E L D I AG R AM
RMPB
PD
485
DE
BU
G1-
2 32
DE
BU
G2-
2 32
RS
232
GPS
485
OM
C2
OM
C1
RGER
GE1
GE2
The RMNIC rear board of the IPI (FE) provides the following interfaces.
FE1 ~ FE4 (RJ45 interface): Provides four FE interfaces for the IPI board. The SIPI board only uses the FE1 interface and supports IP signaling flow at most 60Mbit/s.
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8KOUT/ARM232 (RJ45 interface): is used for debugging without service function.
PrPMC232 and DEBUG-FE (RJ45 interface): are used for debugging without service function.
The RGER rear board of the IPI (GE electric) provides the following interfaces.
GE1 (RJ45 interface): provides 1000M electronic interface access.
GE2 (RJ45 interface): is not used.
PrPMC-232 and DEBUG2-232 (RJ45 interface): are used for debugging without service function.
SIPI Board Functions
In the ZXWN MGW system, the MNIC circuit board serves as the SIPI and IPI logical boards, working in the 1+1 backup or load-sharing mode.
When used as the SIPI board, the MNIC board provides the bottom-layer IP interface of the H248 signaling of the Mc interface. The SIPI board performs the bottom-layer IP protocol processing first for the packet data entering the system, and sends the SCTP packet to the home SMP through the control Ethernet port of the resource shelf. The SMP performs the processing of the SCTP, M3UA and other upper-layer protocols.
The SIPI board also can implements the IP data filter, NAT conversion and other protocol processing as required to protect the IP communication inside the equipment.
Following are the functions of SIPI board.
Providing 1×100M control flow Ethernet interfaces
Providing 1×100M Ethernet interface for the communication between active and standby boards
Providing RS485 backup control channel interfaces
Supporting 1+1 active/standby logical control of the board
Providing one 100M Ethernet interface for the external network.
When the MNIC board is used as SIPI functional board, its corresponding rear board is the RMNIC board.
Figure 50 shows the panel diagram of the RMNIC.
Introduction
Functions
Corresponding Rear Board
Chapter 3 MGW Boards
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F I G U R E 50 PAN E L D I AG R A M O F T H E RMNIC
PrP
MC
232
8 KO
UT/
ARM
232
DEB
UG
-FE
F E4
F E3
RMNIC
FE2
FE1
The RMNIC board provides the following interfaces.
FE1 ~ FE4 (RJ45 interface): The SIPI board only uses the FE1 interface and supports IP signaling flow at most 60Mbit/s. When the RMNIC serves as the rear board of the IPI board, it provides four FE interfaces.
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8KOUT/ARM232 (RJ45 interface): provides the output of 8K system clock, which can be output to the UIM board to provide the reference clock for the boards in the shelf. In addition, this interface can be used for debugging. At this moment, it does not provide the service function.
PrPMC232 and DEBUG-FE (RJ45 interface): are used for debugging without service function.
MNIC Technical Indices
IPI (FE): 30 W.
IPI (GE optical): 40 W.
IPI (GE electric): 40 W.
IPI (POS155M): 40 W.
IPI (POS622M): 40 W.
SIPI: 24 W.
Supported
When the MNIC board serves as the SIPI board, it provides one FE interface.
When the MNIC board serves as the IPI board, it provides at most four FE interfaces, one GE interface (electric or optical), two groups of 155M SDH interfaces (optical interface active/standby protection), or one group of 622M SDH interface (optical interface active/standby protection).
Universal Interface Module Board (UIM) This section describes the UIM board.
This section includes the following topics.
T AB L E 52 TO P I C S I N U N I V E R S A L I N T E R F AC E M O D U L E BO AR D (U IM) SE C T I O N
Topics Page No.
UIM Board Appearance 89
UIM Board Working Principle 92
UIMC Board Functions 93
UIMU Board Functions 93
UIMT Board Functions 94
UIM Technical Indices 95
Power Consumption
Hot Swap
Service Capability
Introduction
Contents
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 89
Topics Page No.
Rear Boards of UIMC Board 96
Rear Board of UIMU or UIMT Board 97
UIM Board Appearance
The UIM board in the MGW can be used as the UIMC, UIMU, and UIMT boards.
Figure 51 shows the panels of UIM, UIMU, and UIMT. Figure 52 shows the layout of UIM board.
F I G U R E 51 PAN E L S O F U IM, U IMU, AN D U IMT
Overview
Outside View
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F I G U R E 52 U IM L AY O U T
GCS/GXS/GTS
Sub-card
CPU Sub-card
Table 53 shows indicators of UIM board. There are total 16 indicators in UIM board.
T AB L E 53 I N D I C AT O R S O F U IM B O AR D
Name Color Indication Description
RUN Green RUN indicator Flashing at 5 Hz: indicates board is powering on.
Flashing at 1 Hz: indicates board is running normally.
ACT Green Active/standby indicator
On: active
Off: Standby.
ALM Red Alarm indicator
On: An alarm exists on the board.
OFF: no alarm exists on the board.
Indicators
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Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT-P Green Packet domain indicator
On: The UIM board in packet domain is running normally.
Off: The UIM board in packet domain is not running normally.
ACT-T Green Circuit switched domain indicator
On: The UIM board in circuit domain is running normally.
Off: The UIM board in circuit domain is not running normally.
LINK1~LINK10
Green Status indicator of control plane cascade interface
On: Control plane cascade 100M interface is connected.
Off: Control plane cascade 100M interface is not connected.
ACT1~2
Green Status indicator of GE interface 1
Indicating currently activated optical interface.
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Name Color Indication Description
SD1~4 Green Optical signal indicator of GE interface 1~4
Indicating whether the optical signals are received by the optical module.
Table 54 shows list of buttons on UIM board.
T AB L E 54 B U T T O N S I N UIM B O AR D
Button Name Description
EXCH Perform active/standby changeover of UIM board
RST Reset UIM board
There is no a DIP switch or jumper on UIM board.
UIM Board Working Principle
Figure 53 shows working principle of UIM board.
F I G U R E 53 U IM B O AR D W O R K I N G P R I N C I P L E
CPU sub-system Periphery memory
PCI bus
Control panel Ethernet
Logical control circuit
User panel Ethernet
RS485
Media panel-control panel
interconnection
Gigabit optical interface on media panel
Gigabit electro interface on media panel
RS232
Active/Standby Ethernet
Debugging Ethernet
GCS sub-card
GXS sub-card
GTS sub-card
24×100M+2×1000MMedia panel Ethernet
24×100M+2×1000M
Control panel Ethernet
Internal bus
Buttons
DIP Switches and Jumpers
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UIMC Board Functions
When the UIM serves as the UIMC board, it is only used in the control shelf, level-1 switching shelf, and circuit switching shelf, acting as the HUB to exchange the control plane data.
Following are functions of UIMC board:
UIMC provides two 24+2 switched HUBs. One is the control plane Ethernet HUB, and the other is the user plane Ethernet HUB. The control plane Ethernet HUB and the user plane Ethernet HUB provide 10 external control plane FE interfaces for interconnection between control planes in the shelf through the GE interconnection mode.
UIMC provides one external user plane GE interface to cascade the CHUB in the control shelf.
Internal FE ports on two hot active/standby boards and 8MHW use high resistance multiplexed mode for backup on the backboard.
UIMC provides functions such as reading the cabinet number, shelf number, slot number, equipment number, and backboard version number.
UIMC provides the internal RS-485 management interface and board reset and reset signal collection function.
UIMC provides clock-driven function inside the resource shelf. After phase lock and drive, input PP2S, 8K, 16M signals are distributed to various slots of the resource shelf. It provides 16M, 8K and PP2S clocks for the resource boards.
UIMC also provides MAC configuration, VLAN and broadcast packet control functions.
UIMC can be compatible with the commercial HUB.
UIMU Board Functions
When the UIM serves as the UIMC board, it is only used in the control shelf, level-1 switching shelf, and circuit switching shelf, acting as the HUB for exchanging the control plane data.
When the UIM serves as the UIMU board, it is generally used in the resource shelf, acting as the HUB to exchange the data of control plane and user plane. It provides the 16K circuit switching function. It does not provide the optical interface for the circuit switching shelf (big T-network), but provides a group of optical interface (active/standby protection) for the packet switching shelf. It is applied at the single-shelf or multi-shelf configuration with small circuit switching capacity (at most 16K timeslot TDM switching).
Following are functions of UIMU board.
Description
Functions
Description
Functions
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UIMP provides two 24+2 switched HUBs. One is the control plane Ethernet HUB, and the other is the user plane Ethernet HUB. The control plane HUB provides 20 internal control plane FE interfaces to interconnect with the boards of the resource shelf, and also provides 4 external control plane FE interfaces that are used between resource shelves or for interconnection between the resource shelf and the CHUB. The user plane HUB provides 23 internal FE to interconnect resource shelves and one external FE.
UIMU provides one or two internal user plane GE interfaces and provides 1-2 GE slots for the resource shelf.
UIMU can provide the 16K circuit switching function within the resource shelf. This function cannot coexist with the external multiplexing function on the UIMT board. These two functions are selected through inserting different daughter cards and selecting the welding methods.
Internal FE ports on two hot active/standby boards and 8MHW use high resistance multiplexed mode for backup on the backboard.
UIMU provides functions such as reading the cabinet number, shelf number, slot number, equipment number, and backboard version number.
UIMU provides the internal RS-485 management interface and board reset and reset signal collection function.
UIMU provides clock-driven function inside the resource shelf. After phase lock and drive, input PP2S, 8K, 16M signals are distributed to various slots of the resource shelf. It provides 16M, 8K and PP2S clocks for the resource boards.
UIMU also provides MAC configuration, VLAN and broadcast packet control functions.
UIMU can be compatible with the commercial HUB.
UIMT Board Functions
When the UIM serves as the UIMT board, it is generally used in the resource shelf to exchange the data of control plane and user plane. Without the circuit switching function, it provides the timeslot resource for the local shelf through interconnecting with the big T-network. It provides optical interfaces for the resource shelf to connect the level-1 switching shelf and circuit switching shelf (big T-network) for cascading multiple resource shelves. It can be applied at the multi-shelf configuration with relatively large capacity.
Following are functions of UIMT board:
UIMT provides two 24+2 switched HUBs. One is the control plane Ethernet HUB, and the other is the user plane Ethernet HUB. The control plane HUB provides 20 internal control
Description
Functions
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plane FE interfaces to interconnect with the boards of the resource shelf, and also provides 4 external control plane FE interfaces that are used between resource shelves or for interconnection between the resource shelf and the CHUB. The user plane HUB provides 23 internal FE to interconnect resource shelves and one external FE.
UIMT provides one external user plane GE optical interface to interconnect the resource shelf and the core switching units by matching GXS daughter cards. The GE channel adopts active/standby dual channel backup mode to provide 1+1 backup for core switching units.
UIMT provides one or two user plane GE interfaces and provides 1-2 GE slots for the resource shelf.
UIMT implements resource shelf access to 16K timeslot of circuit switching units through two pairs of external optical fibers. UIMT also implements 8M to 32M multiplexing of 16K timeslot. Multiplexing of UIMT uses inter-shelf insertion, and provides 128 8M HWs to the resource shelf.
Internal FE ports on two hot active/standby boards and 8MHW use high resistance multiplexed mode for backup on the backboard.
UIMT provides functions such as reading the cabinet number, shelf number, slot number, equipment number, and backboard version number.
UIMT provides the internal RS-485 management interface and board reset and reset signal collection function.
UIMT provides clock-driven function inside the resource shelf. After phase lock and drive, input PP2S, 8K, 16M signals are distributed to various slots of the resource shelf. It provides 16M, 8K and PP2S clocks for the resource boards.
UIMT also provides MAC configuration, VLAN and broadcast packet control functions.
UIMT can be compatible with the commercial HUB.
UIM Technical Indices
UIMC: 41 W.
UIMT: 37 W.
UIMU: 37 W.
Supported
Power Consumption
Hot Swap
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Rear Boards of UIMC Board
When the UIM board is used as the UIMC board, the corresponding rear boards are RUIM2 and RUIM3. The RUIM2 is inserted to the slot 9, and the RUIM3 is inserted to the slot 10. Figure 54 shows the panels of RUIM2 and RUIM3.
F I G U R E 54 PA N E L S O F RUIM2 AN D RUIM3
Description
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The RUIM2 and RUIM3 boards provide the following interfaces:
FE1~FE10 (RJ45 interface): The RUIM2 and RUIM3 boards provide 10 FE interfaces for the interconnection between the control panels of the shelf.
CLKIN (DB9 interface): The CLKIN interfaces on the RUIM2 and RUIM3 boards respectively introduce two lines of active/standby 8K system clock output by the CLKG board.
DEBUG (RJ45 interface): used for debugging and providing no service functions.
Rear Board of UIMU or UIMT Board
When the UIM board is used as the UIMU or UIMT board, the corresponding backboard is RUIM1. Figure 55 shows the panel of RUIM1.
External Interfaces
Description
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F I G U R E 55 PAN E L O F RUIM1
The RUIM1 board provides the following interfaces:
FE1-C1/2 and FE-C3/4 (RJ45 interface): The UIMU and UIMT boards are configured with two RUIM1 rear boards. This interface provides 4 lines of FE interfaces of the control panel for the interconnection between the resource shelf, and between the resource shelf and the CHUB.
FE-U (RJ45 interface): used for debugging and providing no service functions.
External Interface
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CLKIN (DB9 interface): The CLKIN interfaces on the RUIM1 board can introduce two lines of active/standby 8K system clock output by the CLKG board.
GE Universal Interface Module Board (GUIM) This section describes the GUIM board.
This section includes the following topics.
T AB L E 55 TO P I C S I N GE UN I V E R S AL I N T E R F AC E M O D U L E B O AR D (GUIM) S E C T I O N
Topics Page No.
GUIM Board Appearance 99
GUIM Board Working Principle 104
GUIM Board Functions 104
GUIM Technical Indices 105
GUIM Board Appearance
The GUIM is used in the GE switching resource shelf (BGSN) of the MGW.
Figure 56 shows the front panel of the GUIM.
Introduction
Contents
Description
Outside View
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F I G U R E 56 FR O N T P AN E L D I AG R AM O F GUIM
Table 56 shows indicators of UIM board.
T AB L E 56 I N D I C AT O R S O F GUIM B O AR D
Name Color Indication Description
RUN Green RUN indicator Flashing at 5 Hz: indicates board is powering on.
Flashing at 1 Hz: indicates board is running normally.
Indicators
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Name Color Indication Description
ACT Green Active/standby indicator
On: active
Off: Standby.
ALM Red Alarm indicator
On: An alarm exists on the board.
OFF: no alarm exists on the board.
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT-P Green Packet domain indicator
On: The GUIM board in packet domain is running normally.
Off: The GUIM board in packet domain is not running normally.
ACT-T Green Circuit switched domain indicator
On: The GUIM board in circuit domain is running normally.
Off: The GUIM board in circuit domain is not running normally.
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Name Color Indication Description
L1~L6 Green Status indicator of control plane cascade interface
On: Control plane cascade 100 M interface is connected.
Off: Control plane cascade 100M interface is not connected.
ACT Green Status indicator of GE interface 1
Indicating currently activated optical interface
SD Green Optical signal indicator of GE interface 1~4
Indicating whether the optical signals are received by the optical module.
Table 57 shows list of buttons on GUIM board.
T AB L E 57 B U T T O N S I N GUIM B O AR D
Button Name Description
EXCH Perform active/standby changeover of GUIM board
RST Reset GUIM board
There is no a DIP switch or jumper on UIM board.
The GUIM1 and GUIM2 boards are the corresponding rear boards of the GUIM board.
Figure 57 shows the panel diagram of the GUIM1 and GUIM2.
Buttons
DIP Switches and Jumpers
Corresponding Rear Board
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F I G U R E 57 PAN E L D I AG R A M O F GUIM1 AN D GUIM2
The interfaces on the RGUIM1 and RGUIM2 are as follows:
FE1~FE6 (RJ45 interface): the GUIMC board provides six external control plane FE interfaces for the interconnection between the resource plane and the control plane of the CHUB.
CLKIN (DB9 interface): the CLKINs on the RGUIM1 and RGUIM2 access respectively 2-channel active/standby 8K system clock output by the CLKG.
DEBUG (RJ45 interface): is used for debugging and provides no service function.
External Interfaces
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GUIM Board Working Principle
Figure 58 shows working principle of GUIM board.
F I G U R E 58 GUIM B O AR D W O R K I N G P R I N C I P L E
GUIM Board Functions
The GUIM is used in the GE switching resource shelf (BGSN) of the MGW. It provides the following functions.
GUIM provides 48 FE + 4 GE switched HUBs. Its 48 interfaces are divided into two switching planes.
One is the control plane Ethernet HUB. This HUB provides 19 internal control plane FE interfaces to interconnect with the boards inside resource shelves. It provides six external control plane FE interfaces used among inside resource shelves or for the interconnection between resource shelves and CHUBs, and one GE interface to concatenate the control plane of resource shelves.
The other is the user plane Ethernet HUB, providing 21 internal FE interfaces for interconnection of boards inside resource shelves.
GUIM provides 24 GE + 2×10 GE switched HUBs. It provides 19 GE switching interfaces for the service slots, and two groups of external GE interfaces or two 10G Ethernet interfaces to connect the level-1 switching shelf. Two GE interfaces and two 10G Ethernet interfaces are not provided simultaneously.
It provides two groups of GE Ethernet interfaces or two 10G Ethernet interfaces for accessing the level-1 switching shelf or implementing the interconnection of the resource shelves. Each interface implements the active/standby protection on and between boards.
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It completes 64K timeslot switching, and accesses 32K user timeslot switching through four external TDM optical interfaces.
Four external TDM optical interfaces complete the inter-board active/standby protection.
Internal FE ports on two hot active/standby boards and 8MHW use high resistance multiplexed mode for backup on the backplane.
It provides the function for reading the cabinet number, shelf number, slot number, equipment number, backplane version number and backplane type number.
It provides the internal RS-485 management interface and board reset and reset signal collection function.
It provides the clock-driven function inside resource shelves. After the phase lock and drive, the input PP2S, 8K, 16M signals will be distributed to various slots in resource shelves. It provides the 16M, 8K and PP2S clocks for the resource boards.
It provides MAC configuration, VLAN and broadcast packet control functions.
It can be compatible with the commercial HUB.
It supports the BOOT online downloading function.
GUIM Technical Indices
90 W.
Supported
Signaling Processing Board (SPB) This section describes the SPB board.
This section includes the following topics.
T AB L E 58 TO P I C S I N S I G N AL I N G P R O C E S S I N G B O AR D (SPB) SE C T I O N
Topics Page No.
SPB Board Appearance 106
SPB Board Working Principles 111
SPB Board Functions 113
Power Consumption
Hot Swap
Introduction
Contents
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Topics Page No.
SPB Technical Indices 113
SPB Board Appearance
The SPB board is responsible for processing the narrowband signaling, including the HDLC of the No.7 signaling and the signaling below the MTP-2 layer.
Figure 59 shows the front panel of the SPB board, and Figure 60 shows the layout of the circuit board.
F I G U R E 59 PAN E L D I AG R A M O F SPB C I R C U I T B O AR D
RST
ALMACT
RUNENUM
SPB
Overview
Outside View
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F I G U R E 60 LAY O U T D I AG R AM O F SPB C I R C U I T B O AR D
CPU sub-card
CPU sub-card
CPU sub-card
CPU sub-card
ON21 34
ON21 34
ON21 34
ON21 34
S3
S4
S5
S6
ON
234
S1
1
ON
234
S2
1
There are four indicators on the SPB board panel, as shown in Table 59.
T AB L E 59 I N D I C AT O R S O N SPB B O AR D
Name Color Indication Description
RUN Green RUN indicator Flashing at 5 Hz: indicates board is powering on.
Flashing at 1 Hz: indicates board is running normally.
ALM Red Alarm indicator
On: An alarm exists on the board.
Off: No alarm exists on the board.
Indicators
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Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: The board is active.
Off: The board is standby.
Table 60 shows the button on the SPB panel.
T AB L E 60 B U T T O N S O N SPB M O D U L E
Name Description
RST Resets the SPB board.
There are six 4-bit DIP switches in total on the SPB board, namely S1~S6.
Button Description
DIP Switch and Jumper
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1. DIP switches S3~S6 are used to select the matching resistance of impedance on each E1 channel as 75 Ω or 120 Ω; switch on indicating the matching resistance of 120 Ω, while switch off indicating the matching resistance of 75 Ω.
Bit 1~4 of the S3 represents channel 1~4 E1 of the SPB respectively.
Bit 1~4 of the S4 represents channel 5~8 E1 of the SPB respectively.
Bit 1~4 of the S5 represents channel 9~12 E1 of the SPB respectively.
Bit 1~4 of the S6 represents channel 13~16 E1 of the SPB respectively.
2. S1 and S2 are used to indicate corresponding received matching resistance and long/short wire status of each channel E1 chip. The CPU read this status, and performs different initializing to the E1 chip according to this status. Bit 1~4 of the S1 and S2 represents 1~4 E1 chips (that is, channel 1~4 E1, channel 5~8 E1, channel 9~12 E1, and channel 13~16 E1) respectively.
S1 switch on (that is, 1 is read out) indicates long wire; switch off (that is, 0 is read out) indicates short wire.
S2 switch on (that is, 1 is read out) indicates the matching resistance is 120 Ω; switch off (that is, 0 is read out) indicates the matching resistance is 75 Ω.
The corresponding rear board of the SPB board is the RSPB.
Figure 61 shows the panel diagram of the RSPB.
Corresponding Rear Board
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F I G U R E 61 PAN E L D I AG R A M O F RSPB
8 KO
UT/
DE
BUG
-232
E1
12-1
6E
1 1
-11
RSPB
Follows are the external interfaces of the RSPB.
E1~E11 and E12~E16 (DB44 interface) provide 16 external E1 interfaces.
External Interfaces
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For its cable connection and corresponding relationship between pins and core wires, refer to corresponding contents in MGW Inner Cables.
8KOUT/DEBUG-232 (RJ45 interface) interface provides the output of 8 K system clock to the UIM board, providing the reference clock for boards in the shelf. In addition, this interface can be used for debugging. At this moment, no service function is provided.
75 Ω E1 access
On the RSPB rear board, E1 adopts the 75 Ω non-balanced coaxial transmission mode by default. The originating end connects with the protection ground through jumpers, while the receiving end connects with a capacitor (0.1 μF) and then connects with the protection ground through jumpers. The specific modes are selected through the jumpers (X9 ~ X16) on the RSPB board. X9~X16 Selection modes are listed in Table 61.
T AB L E 61 C O N N E C T I O N MO D E O F P I N S X9~X16
Connection Mode Concrete Definition
1-2 Connecting E1_TX (N) –R to the protection ground (NO. N channel)
3-4 Connecting E1_RX (N) -R to the protection ground (NO.N channel)
5-6 Connecting E1_TX (N+1) –R to the protection ground (NO.N+1 channel)
7-8 Connecting E1_RX (N+1) –R to the protection ground (NO.N+1 channel)
9-10 Connecting E1_TX (N+2) –R to the protection ground (NO.N+2 channel)
11-12 Connecting E1_RX (N+2) –R to the protection ground (NO.N+2 channel)
13-14 Connecting E1_TX (N+3) –R to the protection ground (NO.N+3 channel)
15-16 Connecting E1_RX (N+3) –R to the protection ground (NO.N+3 channel)
120 Ω E1 access
If E1 line adopts the 120 Ω PCM wire-balanced transmission mode, the short circuit blocks at jumpers X9~X16 on the RSPB need be removed.
SPB Board Working Principles
The SPB is provided with 16-channel E1s and a multi-CPU processing board with four 8M-Highway-interfaces. It serves as
Jumpers
Description
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narrowband signaling processing board that processes the HDLC of multi-channel No.7 signaling and the signaling below the MTP-2 layer.
Figure 62 shows the schematic diagram of the SPB board.
F I G U R E 62 SC H E M AT I C D I AG R AM O F SPB C I R C U I T B O AR D
CPU subsystem
Control planeEthernet switch
Media planeEthernet switch
TDM switch E1 line interface
16×E1
4×8MHW
4×8MHW
Control plane Ethernet
Media plane Ethernet
The LIU and Framer of 16-channel E1/T1 are integrated to the SPB. In the communication processing unit, there are four CPUs, two of which are used for timeslot switching chips on the user plane and the control plane. Single-chip CPU may connect to E1 and HW through switching chips to support signaling transfer. The CPU system is configured in form of sub-card of the entire system.
The SPB may support E1 access, HW access, or both, depending on the system configuration. A single chip CPU may connect to E1 and HW through switching chips to support signaling transfer. The CPU system is configured in form of sub-card of the entire system.
The SPB provides externally two Ethernet switch planes with individual output rate of 100M, and two Ethernet ports of the CPU are connected to these two Ethernet planes. In addition, the SPB provides two-channel reference 8 k Hz clocks to the clock board.
Schematic Diagram
Working Principles
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SPB Board Functions
The SPB is a multi-CPU processing board with 16-channel E1 and four 8M Highway interfaces. It is used for narrowband signaling processing, including HDLC of multi-channel No.7 signaling and signaling below the MTP-2 layer.
It supports E1/T1 mode, and two impedance configurations, 120 Ω and 75 Ω. According to different system configurations, it is used for accessing E1 or HW, or E1 and HW simultaneously.
It supports the signaling transfer.
It supports at most 64-channel 64K and 4-channel 2M signaling links.
It provides two-channel external reference 8 KHz clock to the clock board.
SPB Technical Indices
31 W
Supported
The SPB board provides 16 E1 interfaces to the external. It supports four 2M signaling links or 64 64K signaling links at most. Each 64K signaling link can support 50,000 subscribers.
ATM Process Board (APBE) This section describes the APBE board in the MGW cabinet.
This section includes the following topics:
T AB L E 62 TO P I C S I N ATM P R O C E S S B O AR D ( APBE) S E C T I O N
Topics Page No.
APBE Board Appearance 114
APBE Board Working Principles 119
APBE Board Functions 119
APBE Technical Indices 120
Power Consumption
Hot Swap
Service Capacity
Introduction
Contents
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APBE Board Appearance
This topic describes the front panel view, layout view of the circuit board, indicators, buttons, DIP switches, jumpers, and external interfaces of the APBE board.
Figure 63 shows the panel of the APBE module, and Figure 64 shows its layout.
F I G U R E 63 PAN E L D I AG R A M O F T H E APBE
ACT4 SD4
RX
SD1ACT1
TX
ACT3 SD3TX
RX
RX
ACT2 SD2
TX
RX
TX
APBE
RST
ACTEXCHALM
ENUM RUN
Overview
Outside View
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 115
F I G U R E 64 LAY O U T D I AG R AM O F APBE
CPU sub-card
There are eight indicators on the APBE panel, as shown in Table 63.
T AB L E 63 APBE P AN E L I N D I C AT O R S
Name Color Indication Description
RUN Green RUN indicator
Flashing at 5 Hz: the board is powering on.
Flashing at 1 Hz: the circuit board runs normally.
ALM Red Alarm indicator
On: An alarm exists on the board.
Off: No alarm on the module.
Indicators
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Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: module active.
Off: module active.
ACT1~2 Green Optical interface starting indicator
Indicating currently started optical interface.
SD1~2 Green Optical signal indicator
Indicating whether the optical module has received optical signals.
Table 64 shows the buttons on the APBE panel. Button Description
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T AB L E 64 B U T T O N S O N T H E APBE M O D U L E
Name Description
RST Reset APBE board
EXCH Perform active/standby changeover of APBE board
There is no DIP switch or jumper on the APBE.
The APBE panel provides two pairs of external STM-1 optical interface, as shown in Figure 63.
The RGIM1 is configured for extracting the reference clock from the APBE line interface. Otherwise, the corresponding rear board of the APBE board is a blank panel.
Figure 65 shows the panel of RIMG1 rear board.
DIP Switch and Jumper
External Interfaces
Corresponding Rear Board
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F I G U R E 65 PAN E L D I AG R A M O F RGIM1
8KO
UT/
DEB
UG
-232
RGIM1
The 8KOUT/DEBUG-232 (RJ45 interface) interface on the RGIM1 provides the output of 8 K system clock, which can be output to the UIM board providing the reference clock for the boards in the shelf. In addition, this interface can be used for debugging. At this moment, no service function is provided.
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APBE Board Working Principles
The APBE module is used for ATM access processing.
Figure 66 shows the principles of the APBE.
F I G U R E 66 SC H E M AT I C D I AG R AM O F APBE
UTO
PIA b
us
UTO
PIA b
us
The APBE system consists of CPU sub-card subsystem, ATM port controller APC64013E, C5e NP subsystem, and ATM access subsystem.
APBE Board Functions
APBE module is used for ATM access processing. APBE board provides STM-1 interface and processes ATM adaptation and broadband No.7 base-layer signaling such as AAL5-SAR, SSCOP and SSCF, transmitting the MTP3B signaling packet via FE interface to signaling MP for processing. Through the interface provided by APBE board, MGW can implement butt joint between RNC, MGW and Nb interface (when ATM adopts a signaling carrier).
The APBE has the following functional indices when serving as the SIUP:
Provide ATM interface of the 2×STM-1 to meet the demands for ATM networking of 2-channel STM-1.
Implement ATM AAL2 with 155 Mbps line-speed and the SAR of the AAL5 (2K VC, 8K CID).
Implement the OAM function of the ATM.
Implement the processing of the SSCOP and the SSCF.
Introduction
Schematic Diagram
Description
Functions
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APBE Technical Indices
51 W
Supported
The provided service capacity is as follows:
Provide ATM interface of the 2×STM-1 to meet the demands for ATM networking of 2-channel STM-1;
Implement the ATM AAL2 with 155 Mbps line-speed and the SAR of the AAL5.
Inter-Working Function Board (IWFB) This section describes the IWFB board in the MGW cabinet.
This section includes the following topics:
T AB L E 65 TO P I C S I N I N T E R-W O R K I N G FU N C T I O N B O AR D ( IWFB) S E C T I O N
Topics Page No.
IWFB Board Appearance 120
IWFB Board Working Principles 124
IWFB Board Functions 125
IWFB Board Technical Indices 125
IWFB Board Appearance
IWFB offers circuit switching data bearer service for transparent/non-transparent, synchronous or asynchronous data services and nontransparent fax service.
Figure 67 shows the panel of IWFB, and Figure 68 shows its layout.
Power Consumption
Hot Swap
Service Capacity
Introduction
Contents
Description
Outside View
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 121
F I G U R E 67 IWFB P AN E L
IWFB
RST
ACT ALM
ENUM RUN
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F I G U R E 68 IWFB L AY O U T
There are four indicators on the IWFB board panel, as shown in Table 66.
T AB L E 66 I N D I C AT O R S O N IWFB B O AR D
Name Color Indication Description
RUN Green RUN indicator Flashing at 5 Hz: indicates board is powering on.
Flashing at 1 Hz: indicates board is running normally.
ALM Red Alarm indicator
On: An alarm exists on the board.
Off: No alarm exists on the board.
Indicators
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Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: The board is active.
Off: The board is standby.
Table 67 shows the buttons on the IWFB panel.
T AB L E 67 B U T T O N S O N IWFB M O D U L E
Name Description
RST Resets the IWFB board
EXCH Performs active/standby changeover of the IWFB board.
There is no jumper or DIP switch on the IWFB board.
Button Description
DIP Switch and Jumper
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There is no external interface on the IWFB board.
The corresponding rear board of the IWFB board is a blank panel.
IWFB Board Working Principles
IWFB offers circuit switching data bearer service for transparent/non-transparent, synchronous or asynchronous data services and nontransparent fax service.
Figure 69 shows the principles of the IWFB.
F I G U R E 69 SC H E M AT I C D I AG R AM O F IWFB
16K
IWFSCPU
DSP
CPLD
Backp
lane
8K
Control flow
Media flowAC104
H1102
H1102
PCI
IWFB processes circuit-domain data service. Uplink data may come from HW interface or Ethernet interface, depending on system configuration.
If uplink data comes from HW interface, DSP processes the data link protocol of wireless network, implements rate adaptation, and converts other protocols. For modem/fax service, after processing data, the DSP sends it to main control processor MPC8250 (data can also directly sent to MPC8250 without passing through DSP); MPC8250 then sends data to M80310 for data/fax modem processing; after modulation, 64 Kbps data is generated and then sent to the PSTN through DTU.
For ISDN service, after terminating the RLP, CPU sends data again to DSP; DSP then adapts data into ISDN service flow generates ISDN service flow and transfers it to the ISDN through DTB/SDTB.
External Interface
Corresponding Rear Board
Overview
Schematic Diagram
Working Principles
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 125
IWFB Board Functions
The IWFB offers circuit switching data bearer service for the transparent/non-transparent synchronous or asynchronous data services and the nontransparent fax service.
The baseband modem supports V series protocols and the highest rate in V.90. It also supports the G3 fax service based on the T.30 fax protocol and two kinds of rate: V.17 (14.4kbit/s) and V.34 (28.8kbit/s). It also supports the ISDN adaptation service at rate of up to 64kbit/s.
The IWFB supports at least 60 channels of data services. It can support at most 240 channels of data services when configured with sub-cards.
The backplane can connect at most four pairs of 8MHz HW cables to the resource processing part on the backplane through the TDM switching network. In this way, the backplane ensures the flexible allocation of timeslots to facilitate the future expansion. The data flow in the TDM side shall be synchronized with the 8 KHz and 16 MHz clocks from the UIM.
The backplane connects with one 10/100M control flow Ethernet for downloading CPU and DSP versions and modem firmware, connecting voice channels, and transferring the signal flow to be processed inside the backplane and the commands and parameters sent by the system for controlling, configuring, maintaining, and managing the backplane.
The backplane connects with one 10/100M media flow control Ethernet for bearing the circuit-domain data services from the switching Ethernet.
The IWFB reserves one set of RS-485 bus for connecting with the UIM.
The IWFB can read the information of cabinet number, shelf number and slot number transmitted by the backplane.
The IWFB reports its reset status to the UIM and accepts the hardware reset signal from the UIM.
The IWFB can implement HW mutual-lock logic with the neighboring board.
IWFB Board Technical Indices
18.68 W
Supported
Description
Functions
Power Consumption
Hot Swap
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It supports at least 60 channels of data services.
It supports at most 240 channels of data services when configured with sub-cards.
Media Resource Board (MRB) This section describes the MRB board in the MGW cabinet.
This section includes the following topics:
T AB L E 68 TO P I C S I N M E D I A R E S O U R C E BO AR D (MRB) S E C T I O N
Topics Page No.
MRB Board Appearance 126
MRB Board Working Principles 129
MRB Board Functions 130
MRB Board Technical Indices 131
MRB Board Appearance
This section describes the MRB board, including the front panel view, layout view, indicators, buttons, DIP switches, jumpers, and external interfaces.
Figure 70 shows the panels of the MRB.
Service Capacity
Introduction
Contents
Overview
Outside View
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 127
F I G U R E 70 MRB P AN E L
MRB
RST
ALMACT
RUNENUM
There are four indicators on the MRB panel, as shown in Table 69.
Indicators
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T AB L E 69 I N D I C AT O R S O N MRB P AN E L
Name Color Indication Description
RUN Green RUN indicator Flashing at 5Hz: indicates board is powering on.
Flashing at 1Hz: indicates board is running normally.
ALM Red Alarm indicator
On: Alarm exists on board.
Off: No alarm exists on board.
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: board is active.
Off: board is standby.
Table 70 shows the buttons on the MRB panel. Button Description
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T AB L E 70 B U T T O N S O N MRB M O D U L E
Name Description
RST Resets the MRB board
There is no DIP switch or jumper on the MRB board.
The MRB board does not provide external interface.
The corresponding rear board of the MRB board is a blank panel.
MRB Board Working Principles
The MRB board provides the following functions for the switch system:
Sending tones and voice
DTMF receiving and sending numbers
MFC receiving and sending numbers
Conference call.
Figure 71 shows the working principle of MRB board.
F I G U R E 71 MRB W O R K I N G P R I N C I P L E S
8/16M
GPCM
CPU
DSP module
DSP module
DSP module
DSP module
PHY
SDRAM
BOOT
FLASH
RS485 chip
8MHW*8
EPLD (1)
ID8k16MRESETHEALTHY
-48V GND
Global clock and logic
Control flow
RS- 485
DSP+MAC+PHY
DSP+MAC+PHY
EPLD (2)
4
8MHW*8
8/16M 8MHWJP1
Media flow 1
Media flow 2JP2
Circuit trunk module
Media resource module
Transformer
DIP Switch and Jumper
External Interfaces
Corresponding Rear Board
Description
Schematic Diagram
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MRB can be divided into two modules according to internal function:
Media resource module
Circuit trunk module
It consists of five functional parts:
Control part
Switching part
Resource processing part
Circuit trunk part
Global logical combination part.
Through 100M control flow Ethernet links, the control core receives and processes the commands from the MP on the UIM, controls and coordinates the working state of peripheral chips such as DSP and DX2K, sends the resource timeslot processing results of DSP back to the DSP.
Universal resource processing platform consists of four independent DSP sub-elements with the same configuration. Each sub-element can process 120 channels of resources of the same type. Resources include tone/voice, DTMF detection/generation, MFC detection/generation, and conference call.
The circuit-domain module provides bidirectional bridging function for 480~1440 channels between the circuit switching side and the packet switching side. That is, it adapts the PCM code flow from the circuit switching side into PCM/UDP/IP packets and sends them to the packet switching side. It also decodes PCM code flow from the PCM/UDP/IP packets from the packet switching side and then sends the flow to the circuit switching side.
MRB Board Functions
The MRB board provides the following functions for the switch system:
Sending tones and voice
DTMF receiving and sending numbers
MFC receiving and sending numbers
Conference call.
The MRB consists of two relatively independent modules: media resource module and circuit trunk module.
The MRB provides 480 channels of media resources for the circuit switching side, including Tone/Voice, DTMF
Working Principles
Description
Function
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 131
Detection/Generation, MFC Detection/Generation, and Conference Call.
Media resource module
It provides 480 channels of Tone/Voice, DTMF Detection/Generation, MFC Detection/Generation, and Conference Call. 3~120 parties can be flexibly configured for each group.
For each service function, 120 channels constitute one basic sub-element. The software can be configured by taking a sub-element as the unit.
It reports the number receiving results of DTMF and MFC to the control center through the control flow Ethernet.
Circuit trunk module
It provides bidirectional bridging function for 480~1440 channels between the circuit switching side and the packet switching side. That is, it adapts the PCM code flow from the circuit switching side into PCM/UDP/IP packets and sent them to the packet switching side; it also decodes PCM code flow from the PCM/UDP/IP packets from the packet switching side and then sent the flow to the circuit switching side.
MRB Board Technical Indices
7 W
Supported
It provides 480 channels of Tone/Voice, DTMF Detection/Generation, MFC Detection/Generation, and Conference Call. 3~120 parties can be flexibly configured for each group.
For each service function, 120 channels constitute one basic sub-element. The software can be configured by taking a sub-element as the unit.
Voice Transcoder Card (VTCD) This section describes the VTCD board in the MGW cabinet.
This section includes the following topics:
Power Consumption
Hot Swap
Service capability
Introduction
Contents
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T AB L E 71 TO P I C S I N V O I C E TR AN S C O D E R C AR D (VTCD) S E C T I O N
Topics Page No.
VTCD Board Appearance 132
VTCD Board Working Principles 136
VTCD Board Functions 137
VTCD Board Technical Indices 137
VTCD Board Appearance
The VTCD board is responsible for processing the voice coding/decoding and the Iu-UP protocol.
Figure 72 shows the panels of the VTCD board, while Figure 73 shows its layout.
Overview
Outside View
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 133
F I G U R E 72 VTCD P AN E L
VTCD
RST
ALMACT
RUNENUM
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F I G U R E 73 VTCD L AY O U T
There are four indicators on the VTCD panel, as shown in Table 72.
T AB L E 72 I N D I C AT O R S O N MRB P AN E L
Name Color Indication Description
RUN Green RUN indicator Flashing at 5Hz: indicates board is powering on.
Flashing at 1Hz: indicates board is running normally.
ALM Red Alarm indicator
On: Alarm exists on board.
Off: No alarm exists on board.
Indicators
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 135
Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: board is active.
Off: board is standby.
Table 73 shows the buttons on the VTCD panel.
T AB L E 73 B U T T O N S O N VTCD M O D U L E
Name Description
RST Resets the VTCD board
There is no DIP switch or jumper on the VTCD board.
Button Description
DIP Switch and Jumper
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The VTCD board does not provide external interface.
The corresponding rear board of the VTCD board is a blank panel.
VTCD Board Working Principles
The VTCD is the TC unit configured in the MGW system. It implements voice coding/decoding, rate adaptation, and EC function. It also processes the Iu-UP protocol when processing the AMR.
VTCD consists of following parts, as shown in Figure 74.
CPU sub-card
DSP array
Circuit switching part
FE switching part
100M Ethernet switching part
EC sub-card
FE PHY interface part.
F I G U R E 74 VTCD W O R K I N G P R I N C I P L E S
External Interfaces
Corresponding Rear Board
Description
Schematic Diagram
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 137
VTCD Board Functions
The VTCD is the TC unit configured in the MGW system. It implements QCELP8K, QCELP13K, AMR, EVRC, and SMV voice coding/decoding, rate adaptation, and EC function. It also processes the Iu-UP protocol when processing the AMR.
VTCD Board Technical Indices
50 W
Supported
DSP array of the VTCD can process 960 channels of AMR signals.
IP Packet Switching Network Board (PSN4V/PSN8V) This section describes the PSN4V/PSN8V board in the MGW cabinet.
This section includes the following topics:
T AB L E 74 TO P I C S I N IP P AC K E T S W I T C H I N G N E T W O R K B O AR D (PSN4V/PSN8V) S E C T I O N
Topics Page No.
PSN4V/PSN8V Board Appearance 137
PSN4V/PSN8V Board Working Principles 140
PSN4V/PSN8V Board Functions 141
PSN4V/PSN8V Technical Indices 141
PSN4V/PSN8V Board Appearance
This section describes the PSN4V/PSN8V board, including the front panel view, layout view, indicators, buttons, DIP switches, jumpers, and external interfaces.
Figure 75 shows the panels of the PSN4V and the PSN8V.
Power Consumption
Hot Swap
Service capability
Introduction
Contents
Overview
Outside View
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F I G U R E 75 PAN E L S O F T H E PSN4V/PSN8V
RSTRST
EXCHALMACT
PSN4V
RUNENUM
ACTEXCHALM
PSN8V
ENUM RUN
There are four indicators on the PSN4V/PSN8V panel, as shown in Table 75.
Indicators
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T AB L E 75 I N D I C AT O R S O N T H E PSN4V/PSN8V P AN E L
Name Color Indication Description
RUN Green RUN indicator Flashing at 5Hz: indicates board is powering on.
Flashing at 1Hz: indicates board is running normally.
ALM Red Alarm indicator
On: Alarm exists on board.
Off: No alarm exists on board.
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: board is active.
Off: board is standby.
Table 76 shows the buttons on the PSN4V/PSN8V panel. Button Description
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T AB L E 76 B U T T O N S O N T H E PSN4V/PSN8V M O D U L E
Name Description
RST Resets PSN4V/PSN8V board
EXCH Performs active/standby changeover of PSN4V/PSN8V board
There is no DIP switch or jumper on the PSN4V/PSN8V board.
The PSN4V/PSN8V board does not provide any external interface.
The corresponding rear board of the PSN4V/PSN8V board is a blank panel.
PSN4V/PSN8V Board Working Principles
The PSN4V/PSN8V switching board performs packet data switching between different line cards. The difference between the PSN4V and the PSN8V lies in the quantity of CrossBar switching chips.
Figure 76 shows the principles of PSN4V/PSN8V.
F I G U R E 76 SC H E M AT I C D I AG R AM O F T H E PSN4V/PSN8V
CPUSubsystem
CPLD
HSSL
ControlBus
CrossBar Switch
DIP Switch and Jumper
External Interfaces
Corresponding Rear Board
Description
Schematic Diagram
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The PSN4V/PSN8V is a self-routing Crossbar switching system, coordinating with the queue engine on the interface board to complete the switching function with the subscriber data switching capacity up to 40G/80G.
Adopting the 1+1 load sharing mode, the PSN switching board connects with the line interface board GLI of the 1+1 port backup. It cooperates with the GLI to complete the switching functions to provide the 40G subscriber data switching capacity. Meanwhile, the PSN connects with the control center of the level-1 switching sub-system (UIMC) through one 10/100 M base Ethernet to implement the operation and maintenance of the subsystem. The CPU subsystem connects with the switching matrix unit through the inner control bus to conduct the basic configuration and management. The PSN connects with the GLI board through the high-speed serial link externally provided by the switching matrix unit to establish the data switching channel. The CPLD implements the necessarily logical adaptation function in the board.
PSN4V/PSN8V Board Functions
The PSN4V/PSN8V switching board implements the packet data interchange between different line cards with the maximum user data switching capacity of 40G/80G.
PSN4V/PSN8V board provides the following functions:
It provides the dual-directional subscriber data switching capacity, 40 Gbps for PSN4V, and 80Gbps for PSN8V.
It provides 1+1 load sharing, manual switching or software switching.
It achieves maximum 80G switching capacity through smooth upgrade to the PSN8V.
It provides 1×100 M Ethernet as the active/standby communication channel, and the control flow channel as well.
It provides the version identification and physical ID reading of the cabinet, shelves and slot numbers.
PSN4V/PSN8V Technical Indices
30 W
Supported
The PSN4V provides dual-directional packet data interchange, 40 Gbps in each direction.
Description
Function
Power Consumption
Hot Swap
Service Capability
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The PSN8V provides dual-directional packet data interchange, 80 Gbps in each direction.
2.5G Line Interface Board (GLIQV) This section describes the GLIQV board in the MGW cabinet.
This section includes the following topics:
T AB L E 77 TO P I C S I N 2 .5G L I N E I N T E R F AC E B O AR D (GLIQV) S E C T I O N
Topics Page No.
GLIQV Board Appearance 142
GLIQV Board Working Principles 146
GLI Board Functions 146
GLIQV Technical Indices 147
GLIQV Board Appearance
In the MGW system, the GLIQV board serves as the GLI functional board.
Figure 77 shows its panel view, and Figure 78 shows its circuit board layout.
Introduction
Contents
Overview
Outside View
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Confidential and Proprietary Information of ZTE CORPORATION 143
F I G U R E 77 PAN E L D I AG R A M O F GLI M O D U L E
TX
SD8ACT8
RX
TX
TX
ACT7TX
SD7
RX
ACT6 SD6
RX
RX
ACT5 SD5
TX
ACT4 SD4
RX
SD2ACT2
RX
ACT3 SD3
TX
RX
ACT1TX
SD1
RST
RX
TX
ALMACTEXCH
ENUM RUN
GLI
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F I G U R E 78 LAY O U T D I AG R AM O F GLIQV M O D U L E
There are 20 indicators on the GLIQV module panel, as shown in Table 78.
T AB L E 78 GLIQV P AN E L I N D I C AT O R S
Name Color Indication Description
RUN Green RUN indicator
Flashing at 5 Hz: The module is being powered on.
Flashing at 1 Hz: the circuit board runs normally.
ALM Red Alarm indicator
On: An alarm from the module.
Off: No alarm from the module.
Indicators
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Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: active.
Off: standby.
ACT1-8 Green Optical interface starting indicator
Indicating currently started optical interface.
SD1-8 Green Optical signal indicator
Indicating whether the optical interface has received optical signals.
Table 79 shows the buttons on the GLIQV panel. Button Description
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T AB L E 79 B U T T O N S O N T H E GLIQV M O D U L E
Name Description
RST Resets GLIQV board
EXCH Performs active/standby changeover of GLIQV board
There is no DIP switch or jumper on GLIQV.
GLIQV provides four pairs of external GE optical interfaces, each pair mutually backing up. Through these interfaces, it connects to backplane of the resource shelf.
The corresponding rear board of the GLIQV board is a blank panel.
GLIQV Board Working Principles
The GLIQV board is the line interface board with four GE ports. Its functions include the physical layer adaptation, IP packet checklist, fragmentation, transfer, and traffic management. Its processing capability orientation is 2.5 Gbps line-speed processing and transfer, and 1K-stream traffic management.
Figure 79 shows the working principles of the GLIQV board.
F I G U R E 79 SC H E M AT I C D I AG R AM O F T H E GLIQV
Ingress NP
Egress NP
GE MAC
GE optical module
GE optical module
Queue manager
HSSL
CPLD
GLI Board Functions
In the MGW system, the GLI board serves as the GLI functional board to access the packet services of the resource shelf to the level-1 switching platform.
The GLI board provides the following functions:
DIP Switch and Jumper
External Interfaces
Corresponding Rear Board
Introduction
Schematic Diagram
Description
Functions
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Providing four pairs of GE ports for 1+1 backup of optical interface of each GE port, totally eight physical GE ports to the external. Provide GE port backup between GE ports of adjunct GLI. Adopt 1+1 backup mode. Generally, the GLI uses four of all GE ports. Thus, a pair of GLI boards can connect to two BUSNs.
Implementing the functions of the physical layer adaptation, IP packet checklist, fragmentation, transfer, and traffic management. Its processing capability orientation is 2.5Gbps line-speed processing and transfer, and 1K-stream traffic management.
Providing 1×100M Ethernet as the active/standby communication channel.
Providing 1×100M Ethernet as the control-of-flow channel.
GLIQV Technical Indices
65 W
Supported
The GLIQV offers the processing capability of 2.5 Gbps line-speed processing and transfer, and 1K-stream traffic management.
Digital Trunk Board (DTB) This section describes the DTB board in the MGW cabinet.
This section includes the following topics.
T AB L E 80 TO P I C S I N D I G I T AL TR U N K B O AR D (DTB) S E C T I O N
Topics Page No.
DTB Board Appearance 147
DTB Board Working Principles 153
DTB Board Functions 154
DTB Board Technical Indices 155
DTB Board Appearance
The DTB board is the digital trunk interface module for accessing the E1/T1 link.
Power Consumption
Hot Swap
Service capability
Introduction
Contents
Overview
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Figure 80 shows its panel view, and Figure 81 shows its circuit board layout.
F I G U R E 80 DTB P AN E L
Outside View
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F I G U R E 81 DTB L AY O U T
S1
S2
S3
S4
S5
S6
S12
S9
S7S8S10S12
X23
ON
ONONONON
ON
ON
ON
ON
ON
ON
ON
There are 36 indicators on the DTB panel, as shown in Table 81.
T AB L E 81 I N D I C AT O R S O N DTB P AN E L
Name Color Indication Description
RUN Green RUN indicator
Flashing at 5 Hz: The module is being powered on.
Flashing at 1 Hz: the circuit board runs normally.
Keeping flashing at 5 Hz: Power-on failure.
ALM Red Alarm indicator
Flashing at 5 Hz: Power-on failure.
Off: The board runs normally.
Indicators
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Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: active.
Off: standby.
L1~L32 Green 32-channel E1 indicators
Off: This E1 is not configured in the database.
Staying on: This E1 is configured in the database, but is not connected.
Flashing at 1 HZ: The E1 is configured in the database, and it is connected.
Table 82 shows the button on the DTB panel. Button Description
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T AB L E 82 B U T T O N O N DTB M O D U L E
Name Description
RST Resets DTB board
There are 12 DIP switches on the DTB board.
Eight 4-digit DIP switches (S1-S6, S9, and S12) are used to select the matching impedance of each E1 channel: 75 Ω or 120 Ω.
If DIP switch is “ON”, the line impedance is 75 Ω.
If DIP switch is “OFF”, the line impedance is 120 Ω.
Two 4-digit DIP switches (S7 and S8) indicate the receiving matching impedance of each E1 chip for the CPU.
If DIP switch is “ON”, it indicates that the matching impedance of the corresponding E1 is 75 Ω.
If DIP switch is “OFF”, it indicates that the matching impedance of corresponding E1 is 120 Ω.
Each DIP switch corresponds to one E1 chip: S7 corresponds to E1 Chips 1–4 (E1 Channels 1–16); S8 corresponds to E1 Chips 5–8 (E1 Channels 17–32). CPU retrieves the state and initializes the E1 chip according to the state.
Two 4-digit DIP switches (S10 and S11) indicate the long/short haul state of each E1 chip for the CPU.
If DIP switch is “ON”, it indicates that the corresponding E1 chip (four E1 channels) works in the “SHORT HAUL” mode.
If DIP switch is “OFF”, it indicates that the corresponding E1 chip works in “LONG HAUL” mode.
Each DIP switch corresponds to one E1 chip: S10 corresponds to E1 Chips 1–4 (E1 Channels 1–16); S11 corresponds to E1 Chips 5–8 (E1 Channels 17–32). CPU retrieves the state and initializes E1 chip according to the state.
DTB provides one jumper (X23) for debugging the module. In normal operation, X23 is disconnected.
The RDTB board is the rear board of the DTB. Figure 82 shows the panel of the RDTB.
DIP Switches and Jumpers
Corresponding Rear Board
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F I G U R E 82 RDTB P AN E L
DE
BU
G-F
E/2
32E
1 2
2 -32
E1
11 -
21
RDTB
E1
1- 1
0
The RDTB board provides the following interfaces.
E1 1~10, E1 11~21 and E1 22~32 (DB44 interface): Provides 11 lines of E1/T1 interfaces respectively. Therefore, the RDTB board can totally provide 32 E1/T1 interfaces.
8KOUT/DEBUG-232 (RJ45 interface): Outputs the 8K system clock to the UIM board and provides the reference clock to
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the boards in the shelf. In addition, this interface can be used for debugging, and does not provide service functions in this case.
Table 83 shows the selection of X9-X16 on the rear board.
T AB L E 83 C O N N E C T I O N MO D E O F X9-X16 J U M P E R S
Connection Mode Description
1–2 They connect E1_TX (N)-R to the protection ground (Channel N).
3–4 They connect E1_RX (N)-R to the protection ground (Channel N).
5–6 They connect E1_TX (N+1)-R to the protection ground (Channel N+1).
7–8 They connect E1_RX (N+1)-R to the protection ground (Channel N+1).
9–10 They connect E1_TX (N+2)-R to the protection ground (Channel N+2).
11–12 They connect E1_RX (N+2)-R to the protection ground (Channel N+2).
13–14 They connect E1_TX (N+3)-R to the protection ground (Channel N+3).
15–16 They connect E1_RX (N+3)-R to the protection ground (Channel N+3).
Note:
E1 line uses 120 Ω PCM unbalanced transmission mode, the connected blocks of X9-X16 on RDTB shall be removed.
DTB Board Working Principles
DTB is the digital trunk interface module for providing external E1/T1 link.
Figure 83 shows the working principles of the DTB.
Description
Schematic Diagram
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F I G U R E 83 DTB W O R K I N G P R I N C I P L E
The circuitry consists of these modules:
Unit processing circuit
E1 basic interface circuit
Timeslot switching circuit
EC circuit
Alarm detection and indication circuit
Time sequence and logic generation circuit
Bus receiving and transmitting circuit.
DTB Board Functions
DTB has the following functions:
It provides 32×E1/T1 interfaces and supports the EC function (optional).
It supports transparent transmission of intra-office CAS and CCS.
It can extract 8K synchronous clock from a line and transfer it through a cable to the clock module as a reference clock.
The difference between DTB and DTEC lies in the Echo Cancellation (EC) function. The DTEC can be configured with EC function optionally.
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DTB Board Technical Indices
12 W
Supported
It supports at most 32 channels of E1/T1 links.
Digital Trunk Board with EC Function (DTEC) This section describes the DTEC board in the MGW cabinet.
This section includes the following topics.
T AB L E 84 TO P I C S I N D I G I T AL TR U N K B O AR D W I T H EC FU N C T I O N (DTEC) S E C T I O N
Topics Page No.
DTEC Board Appearance 155
DTEC Board Working Principles 161
DTEC Board Functions 162
DTEC Board Technical Indices 163
DTEC Board Appearance
The DTB board is the digital trunk interface module for accessing the E1/T1 link.
Figure 84 shows its panel view, and Figure 85 shows its circuit board layout.
Power Consumption
Hot Swap
Service capability
Introduction
Contents
Overview
Outside View
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F I G U R E 84 DTEC P AN E L
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F I G U R E 85 DTEC L AY O U T
S1
S2
S3
S4
S5
S6
S12
S9
S7S8S10S12
X23
ON
ONONONON
ON
ON
ON
ON
ON
ON
ON
There are 36 indicators on the DTEC panel, as shown in Table 85.
T AB L E 85 I N D I C AT O R S O N DTEC P AN E L
Name Color Indication Description
RUN Green RUN indicator
Flashing at 5 Hz: The module is being powered on.
Flashing at 1 Hz: the circuit board runs normally.
Keeping flashing at 5 Hz: Power-on failure.
ALM Red Alarm indicator
Flashing at 5 Hz: Power-on failure.
Off: The board runs normally.
Indicators
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Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: active.
Off: standby.
L1~L32 Green 32-channel E1 indicators
Off: This E1 is not configured in the database.
Staying on: This E1 is configured in the database, but is not connected.
Flashing at 1 HZ: The E1 is configured in the database, and it is connected.
Table 86 shows the button on the DTEC panel. Button Description
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T AB L E 86 B U T T O N O N DTB M O D U L E
Name Description
RST Resets DTB board
There are 12 DIP switches on the DTEC board.
Eight 4-digit DIP switches (S1-S6, S9, and S12) are used to select the matching impedance of each E1 channel: 75 Ω or 120 Ω.
If DIP switch is “ON”, the line impedance is 75 Ω.
If DIP switch is “OFF”, the line impedance is 120 Ω.
Two 4-digit DIP switches (S7 and S8) indicate the receiving matching impedance of each E1 chip for the CPU.
If DIP switch is “ON”, it indicates that the matching impedance of the corresponding E1 is 75 Ω.
If DIP switch is “OFF”, it indicates that the matching impedance of corresponding E1 is 120 Ω.
Each DIP switch corresponds to one E1 chip: S7 corresponds to E1 Chips 1–4 (E1 Channels 1–16); S8 corresponds to E1 Chips 5–8 (E1 Channels 17–32). CPU retrieves the state and initializes the E1 chip according to the state.
Two 4-digit DIP switches (S10 and S11) indicate the long/short haul state of each E1 chip for the CPU.
If DIP switch is “ON”, it indicates that the corresponding E1 chip (four E1 channels) works in the “SHORT HAUL” mode.
If DIP switch is “OFF”, it indicates that the corresponding E1 chip works in “LONG HAUL” mode.
Each DIP switch corresponds to one E1 chip: S10 corresponds to E1 Chips 1–4 (E1 Channels 1–16); S11 corresponds to E1 Chips 5–8 (E1 Channels 17–32). CPU retrieves the state and initializes E1 chip according to the state.
DTEC provides one jumper (X23) for debugging the module. In normal operation, X23 is disconnected.
The RDTB board is the rear board of the DTB. Figure 86 shows the panel of the RDTB.
DIP Switches and Jumpers
Corresponding Rear Board
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F I G U R E 86 RDTB P AN E L
DE
BU
G-F
E/2
32E
1 2
2 -32
E1
11 -
21
RDTB
E1
1- 1
0
The RDTB board provides the following interfaces.
E1 1~10, E1 11~21 and E1 22~32 (DB44 interface): Provides 11 lines of E1/T1 interfaces respectively. Therefore, the RDTB board can totally provide 32 E1/T1 interfaces.
8KOUT/DEBUG-232 (RJ45 interface): Outputs the 8K system clock to the UIM board and provides the reference clock to
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the boards in the shelf. In addition, this interface can be used for debugging, and does not provide service functions in this case.
Table 87 shows the selection of X9-X16 on the rear board.
T AB L E 87 C O N N E C T I O N MO D E O F X9-X16 J U M P E R S
Connection Mode Description
1–2 They connect E1_TX (N)-R to the protection ground (Channel N).
3–4 They connect E1_RX (N)-R to the protection ground (Channel N).
5–6 They connect E1_TX (N+1)-R to the protection ground (Channel N+1).
7–8 They connect E1_RX (N+1)-R to the protection ground (Channel N+1).
9–10 They connect E1_TX (N+2)-R to the protection ground (Channel N+2).
11–12 They connect E1_RX (N+2)-R to the protection ground (Channel N+2).
13–14 They connect E1_TX (N+3)-R to the protection ground (Channel N+3).
15–16 They connect E1_RX (N+3)-R to the protection ground (Channel N+3).
Note:
E1 line uses 120 Ω PCM unbalanced transmission mode, the connected blocks of X9-X16 on RDTB shall be removed.
DTEC Board Working Principles
DTEC is the digital trunk interface module for providing external E1/T1 link.
Figure 87 shows the working principles of the DTEC.
Description
Schematic Diagram
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F I G U R E 87 DTEC W O R K I N G P R I N C I P L E
The circuitry consists of these modules:
Unit processing circuit
E1 basic interface circuit
Timeslot switching circuit
EC circuit
Alarm detection and indication circuit
Time sequence and logic generation circuit
Bus receiving and transmitting circuit.
DTEC Board Functions
DTEC has the following functions:
It provides 32×E1/T1 interfaces and supports the EC function (optional).
It supports transparent transmission of intra-office CAS and CCS.
It can extract 8K synchronous clock from a line and transfer it through a cable to the clock module as a reference clock.
The difference between DTB and DTEC lies in the Echo Cancellation (EC) function. The DTEC can be configured with EC function optionally.
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DTEC Board Technical Indices
15 W
Supported
It supports at most 32 channels of E1/T1 links.
Control Plane Interconnection Board (CHUB) This section describes the CHUB board.
This section includes the following topics.
T AB L E 88 TO P I C S I N C O N T R O L P L AN E I N T E R C O N N E C T I O N B O AR D (CHUB) S E C T I O N
Topics Page No.
CHUB Board Appearance 163
CHUB Board Working Principles 168
CHUB Board Functions 169
CHUB Technical Indices 169
CHUB Board Appearance
This section describes the CHUB board, including the front panel view, layout view of the circuit board, indicators, buttons, DIP switches, jumpers, and external interfaces.
Figure 88 shows the front panel of the CHUB board, and Figure 89 shows its circuit layout.
Power Consumption
Hot Swap
Service capability
Introduction
Contents
Overview
Outside View
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F I G U R E 88 PAN E L D I AG R A M O F CHUB
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F I G U R E 89 LAY O U T D I AG R AM O F CHUB
GE sub-card
There are 50 indicators on two types of the CHUB module respectively, as shown in Table 89.
T AB L E 89 I N D I C AT O R S O N CHUB M O D U L E
Name Color Indication Description
RUN Green RUN indicator Flashing at 5 Hz: The module is being powered on.
Flashing at 1 Hz: the circuit board runs normally.
ACT Green Active/standby indicator
On: The board is active.
Off: The board is standby.
ALM Red Alarm indicator
On: An alarm exists on the module.
Off: No alarm exists on the module.
Indicators
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Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
L1-L46
Green Status indicator of control plane cascade interface
On: Control plane cascade 100 M interface 1 is connected.
Off: Control plane cascade 100 M interface 1 is not connected.
Table 90 shows the buttons on the CHUB panel.
T AB L E 90 B U T T O N S O N CHUB M O D U L E
Name Description
RST Resets the CHUB board.
EXCH Performs the active/standby changeover of the CHUB board.
Button Description
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There is no DIP switch or jumper on the CHUB board.
The RCHB1 and RCHB2 boards are the corresponding rear boards of the CHUB. They jointly provide external interfaces of the CHUB board.
Figure 90 shows the panel diagram of the RCHB1 and the RCHB2.
F I G U R E 90 PAN E L D I AG R A M O F RCHB1 AN D RCHB2 D
EB
UG
-FE
/23 2
FE17
-24
DE
BU
G-F
E/2
32F E
41-4
6
FE9-
16
F E33
-40
RCHB2RCHB1
FE1-
8
F E25
-32
Follows are the interfaces on the RCHB1 and the RCHB2.
DIP Switch and Jumper
Corresponding Rear Board
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FE1-8, FE9-16, FE17-24, FE25-32, FE33-40, and FE41-46 (DB44 interface): through these ports, the CHUB module provides 46 100M Ethernet interfaces to the external for the shelf cascade of the control plane.
For the connection method, refer to Interconnection Cable on the Control Panel.
DEBUG-FE/232 (RJ45 interface): is used for debugging and has no service function.
CHUB Board Working Principles
In the MGW system, the CHUB board is used to expand the distributed processing platform.
Figure 91 shows the schematic diagram of the control plane interconnection board CHUB.
F I G U R E 91 SC H E M AT I C D I AG R AM O F CHUB
The CPU system manages the Ethernet switching sub-system through the PCI bus. It provides a debugging interface and the active/standby interconnection channel. The CPU system provides the following functions:
It implements the configuration of the switching chips.
It provides the function of reading rack number, shelf number, slot number, equipment number, backplane version number and backplane type number.
It provides the functions of reading board status, 485 communication, and serial debugging interface.
Description
Schematic Diagram
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 169
CHUB Board Functions
In the MGW system, the CHUB is used for the expansion of the distributed processing platform. Each resource shelf, level-1 switching shelf and circuit switching shelf provide two or four 100M Ethernet interfaces (control flow) to connect with the convergence Ethernet (CHUB).
CHUB Technical Indices
34 W
Supported
The CHUB provides 46 100M external Ethernet interfaces and one 1000M internal Ethernet interface.
TDM Switch Network Board (TSNB) This section describes the TSNB board.
This section includes the following topics.
T AB L E 91 TO P I C S I N TDM S W I T C H N E T W O R K B O AR D (TSNB) S E C T I O N
Topics Page No.
TSNB Board Appearance 169
TSNB Board Working Principles 173
TSNB Board Functions 174
TSNB Board Technical Indices 174
TSNB Board Appearance
TSNB provides switching function for the 64k circuit timeslots.
Figure 92 shows the panels of the TSNB, and Figure 93 shows its circuit layout.
Power Consumption
Hot Swap
Service Capability
Introduction
Contents
Overview
Outside View
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F I G U R E 92 TSNB P AN E L
RUNENUM
EXCH
RST
ALMACT
TSNB
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F I G U R E 93 TSNB L AY O U T
There are four indicators on the TSNB panel, as shown in Table 92.
T AB L E 92 I N D I C AT O R S O N TSNB P AN E L
Name Color Indication Description
RUN Green RUN indicator Flashing at 5 Hz: The module is being powered on.
Flashing at 1 Hz: the circuit board runs normally.
Keeping flashing at 5 Hz: Power-on failure.
ALM Red Alarm indicator
Flashing at 5 Hz: Power-on failure.
Off: The board runs normally.
Indicators
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Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: board is active.
Off: board is standby.
Table 93 shows the buttons on the TSNB panel.
T AB L E 93 B U T T O N S O N TSNB M O D U L E
Name Description
RST Resets the TSNB board.
EXCH Performs the active/standby changeover of the TSNB board.
Button Description
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Confidential and Proprietary Information of ZTE CORPORATION 173
There is no DIP switch or jumper on the TSNB board.
The TSNB board does not provide external interface.
The corresponding rear board of the TSNB board is a blank panel.
TSNB Board Working Principles
TSNB provides switching function for the 64K circuit timeslots. The switching network is connected to the TFI in the local shelf through a backplane with 576M LVDS.
Figure 94 shows the working principle of TSNB board.
F I G U R E 94 TSNB W O R K I N G P R I N C I P L E S
EPLD
Backplane ID
I_UIM_HEALTHY
64K Digital
Switching array
128 pairs of 32M HW 8 pairs of
576M LVDS
32M/64M/8K clock
-48V power
Active/standby logic
RS485
FPGA
TSNB
ZXPMC
Sub-card
Control flow Ethernet
Bus drive
Drive
Isolation
Clock drive
Chip selection Clock Control
Data busOutput enabling
Address/data bus
O_UIM_RSTActive/standby
information Ethernet
Power module
+2.5V+3.3V
Debug serial port
Rear board in position
Clock
Clock
Address/data bus
Data bus
The TSNB provides unblocked switching network with the T-T-T structure. The switching capacity is 64K×64K timeslots, and the rate of the PCM bus is 32Mb/s. Two TSNB boards work in active/standby mode. The active and standby TSNBs exchange information through one Ethernet channel. The MPB controls the connection of the T network through the control plane. The backup RS485 channel is provided. The TSNB consists of these
DIP Switch and Jumper
External Interfaces
Corresponding Rear Board
Description
Schematic Diagram
Working Principles
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parts: CPU sub-card control part, digital switching array part, power conversion part, LVDS interface part, Ethernet and RS485 part, frame synchronization adjustment part.
TSNB Board Functions
TSNB provides switching function for the 64K circuit timeslots. The switching network is connected to the TFI in the local shelf through a backplane with 576M LVDS.
TSNB Board Technical Indices
20 W
Supported
It can provide the unblocked circuit switching of 64K×64K.
Enhanced TDM Switch Network Board (ETSN) This section describes the ETSN board.
This section includes the following topics.
T AB L E 94 TO P I C S I N E N H AN C E D TDM SW I T C H N E T W O R K B O AR D (ETSN) S E C T I O N
Topics Page No.
ETSN Board Appearance 174
ETSN Board Working Principles 178
ETSN Board Functions 179
ETSN Board Technical Indices 179
ETSN Board Appearance
This section describes the ETSN board, including the front panel view, layout view of the circuit board, indicators, buttons, DIP switches, jumpers, and external interfaces.
Power Consumption
Hot Swap
Service capability
Introduction
Contents
Overview
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 175
Figure 95 shows the panels of the ETSN, and Figure 96 shows its circuit layout.
F I G U R E 95 ETSN P AN E L
RUNENUM
EXCH
RST
ALMACT
ETSN
Outside View
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F I G U R E 96 ETSN L AY O U T
CPUsub-card
There are four indicators on the ETSN panel, as shown in Table 95.
T AB L E 95 I N D I C AT O R S O N ETSN P AN E L
Name Color Indication Description
RUN Green RUN indicator Flashing at 5 Hz: The module is being powered on.
Flashing at 1 Hz: the circuit board runs normally.
Keeping flashing at 5 Hz: Power-on failure.
ALM Red Alarm indicator
Flashing at 5 Hz: Power-on failure.
Off: The board runs normally.
Indicators
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 177
Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: board is active.
Off: board is standby.
Table 96 shows the buttons on the ETSN panel.
T AB L E 96 B U T T O N S O N ETSN M O D U L E
Name Description
RST Resets the ETSN board.
EXCH Performs the active/standby changeover of the ETSN board.
Button Description
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There is no DIP switch or jumper on the ETSN board.
The ETSN board does not provide external interface.
The corresponding rear board of the ETSN board is a blank panel.
ETSN Board Working Principles
ETSN provides switching function for the 128K circuit timeslots. The switching network is connected to the TFI in the local shelf through a backplane with 576M LVDS.
Figure 97 shows the working principle of ETSN board.
F I G U R E 97 ETSN W O R K I N G P R I N C I P L E S
EPLD
Backplane ID
I_UIM_HEALTHY
128K Digital
Switching array
256 pairs of 32M HW 16 pairs of
576M LVDS
32M/64M/8K clock
-48V power
Active/standby logic
RS485
FPGA
ZXPMC
Sub-card
Control flow Ethernet
Bus drive
Drive
Isolation
Clock drive
Chip selection Clock Control
Data busOutput enabling
Address/data bus
O_UIM_RSTActive/standby
information Ethernet
Power module
+1.5V+3.3V
Debug serial port
Rear board in position
Clock
Clock
Address/data bus
Data bus
The ETSN provides unblocked switching network with the T-T-T structure. The switching capacity is 128K×128K timeslots, and the rate of the PCM bus is 32Mb/s. Two TSNB boards work in active/standby mode. The active and standby TSNBs exchange information through one Ethernet channel. The MPB controls the connection of the T network through the control plane. The backup RS485 channel is provided.
DIP Switch and Jumper
External Interfaces
Corresponding Rear Board
Description
Schematic Diagram
Working Principles
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 179
The ETSN consists of these parts: CPU sub-card control part, digital switching array part, power conversion part, LVDS interface part, Ethernet and RS485 part, frame synchronization adjustment part.
ETSN Board Functions
TSNB provides switching function for the 128K circuit timeslots. The switching network is connected to the TFI in the local shelf through a backplane with 576M LVDS.
ETSN Board Technical Indices
40 W
Supported
It can provide the unblocked circuit switching of 128K×128K.
Advanced TDM Switch Network Board (STSN) This section describes the STSN board.
This section includes the following topics.
T AB L E 97 TO P I C S I N AD V A N C E D TDM SW I T C H N E T W O R K B O AR D (STSN) S E C T I O N
Topics Page No.
STSN Board Appearance 179
STSN Board Working Principles 183
STSN Board Functions 184
STSN Board Technical Indices 184
STSN Board Appearance
This section describes the STSN board, including the front panel view, layout view of the circuit board, indicators, buttons, DIP switches, jumpers, and external interfaces.
Figure 98 shows the panels of the STSN, and Figure 99 shows its circuit layout.
Power Consumption
Hot Swap
Service capability
Introduction
Contents
Overview
Outside View
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180 Confidential and Proprietary Information of ZTE CORPORATION
F I G U R E 98 STSN P AN E L
RUNENUM
EXCH
RST
ALMACT
ETSNSTSN
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Confidential and Proprietary Information of ZTE CORPORATION 181
F I G U R E 99 STSN L AY O U T
CPUsub-card
There are four indicators on the STSN panel, as shown in Table 98.
T AB L E 98 I N D I C AT O R S O N STSN P AN E L
Name Color Indication Description
RUN Green RUN indicator Flashing at 5 Hz: The module is being powered on.
Flashing at 1 Hz: the circuit board runs normally.
Keeping flashing at 5 Hz: Power-on failure.
ALM Red Alarm indicator
Flashing at 5 Hz: Power-on failure.
Off: The board runs normally.
Indicators
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Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: board is active.
Off: board is standby.
Table 99 shows the buttons on the STSN panel.
T AB L E 99 B U T T O N S O N STSN M O D U L E
Name Description
RST Resets the STSN board.
EXCH Performs the active/standby changeover of the STSN board.
Button Description
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Confidential and Proprietary Information of ZTE CORPORATION 183
There is no DIP switch or jumper on the STSN board.
The STSN board does not provide external interface.
The corresponding rear board of the STSN board is a blank panel.
STSN Board Working Principles
STSN provides switching function for the 256K circuit timeslots. The switching network is connected to the TFI in the local shelf through a backplane with 576M LVDS.
Figure 100 shows the working principle of STSN board.
F I G U R E 100 STSN WO R K I N G P R I N C I P L E S
EPLD
Backplane ID
I_UIM_HEALTHY
256K Digital
Switching array
512 pairs of 32M HW 32 pairs of
576M LVDS
32M/64M/8K clock
-48V power
Active/standby logic
RS485
FPGA
ZXPMC
Sub-card
Control flow Ethernet
Bus drive
Drive
Isolation
Clock drive
Chip selection Clock Control
Data busOutput enabling
Address/data bus
O_UIM_RSTActive/standby
information Ethernet
Power module
+1.5V+3.3V
Debug serial port
Rear board in position
Clock
Clock
Address/data bus
Data bus
The STSN provides unblocked switching network with the T-T-T structure. The switching capacity is 256K×256K timeslots, and the rate of the PCM bus is 32Mb/s. Two TSNB boards work in active/standby mode. The active and standby TSNBs exchange information through one Ethernet channel. The MPB controls the connection of the T network through the control plane. The backup RS485 channel is provided.
DIP Switch and Jumper
External Interfaces
Corresponding Rear Board
Description
Schematic Diagram
Working Principles
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184 Confidential and Proprietary Information of ZTE CORPORATION
The STSN consists of these parts: CPU sub-card control part, digital switching array part, power conversion part, LVDS interface part, Ethernet and RS485 part, frame synchronization adjustment part.
STSN Board Functions
TSNB provides switching function for the 256K circuit timeslots. The switching network is connected to the TFI in the local shelf through a backplane with 576M LVDS.
STSN Board Technical Indices
66 W
Supported
It can provide the unblocked circuit switching of 256K×256K.
TDM Fiber Interface (TFI) This section describes the TFI board.
This section includes the following topics.
T AB L E 100 TO P I C S I N TDM F I B E R I N T E R F AC E (TF I ) S E C T I O N
Topics Page No.
TFI Board Appearance 184
TFI Board Working Principles 187
TFI Board Functions 188
TFI Board Technical Indices 188
TFI Board Appearance
The TFI board is the interface of the T network unit.
Figure 101 shows the panels of the TFI.
Power Consumption
Hot Swap
Service capability
Introduction
Contents
Overview
Outside View
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 185
F I G U R E 101 TF I P AN E L
RX
TX
ACT8 SD8
RX
ACT6 SD6
RX
ACT7 SD7
TX
RX
TXACT5 SD5
RX
TX
ACT4 SD4
RX
TXACT3 SD3
TX
TXACT2 SD2
RX
ACT1 SD1
TX
RX
RUNENUM
EXCH
RST
ACT ALM
TFI
There are 20 indicators on the TFI panel, as shown in Table 101.
T AB L E 101 I N D I C AT O R S O N TF I P AN E L
Name Color Indication Description
RUN Green RUN indicator
Flashing at 5 Hz: the board is powering on.
Flashing at 1 Hz: the circuit board runs normally.
ALM Red Alarm indicator
On: An alarm exists on the board.
Off: No alarm on the module.
Indicators
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Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: module active.
Off: module active.
ACT1~8 Green Optical interface starting indicator
Indicating currently started optical interface.
SD1~8 Green Optical signal indicator
Indicating whether the optical module has received optical signals.
Table 102 shows the buttons on the TFI panel. Button Description
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 187
T AB L E 102 BU T T O N S O N TF I M O D U L E
Name Description
RST Resets the TFI board.
EXCH Performs the active/standby changeover of the TFI board.
There is no DIP switch or jumper on the TFI board.
The TFI panel provides eight GE optical interfaces for the TDM access.
The corresponding rear board of the TFI board is a blank panel.
TFI Board Working Principles
The TFI provides interfaces from the TSNB or ETSN board inside the T-network unit to the external DTU and TCU.
Figure 102 shows the working principles of TFI.
F I G U R E 102 TF I B O AR D W O R K I N G P R I N C I P L E S
Board management
unit
LVDS selector
SERDES× 8 Optical
module8
LVDS multiplexer
LVDS divider
FPGA
8 sets of 576M active/standby
LVDS
Active/standby selection signal
8 sets of 576M active/standby
×
CPU monitoring part monitors the de-multiplexing and multiplexing of eight channels of optical transmission and establishes links. It checks links, bit error, and clock. It also provides functions such as state query and active/standby control. Besides, it communicates with the MP through an RS485 port. FPGA extracts and inserts 8 KHz frame synchronization signal. It also generates, inserts, and checks pseudo number.
DIP Switch and Jumper
External Interfaces
Corresponding Rear Board
Description
Schematic Diagram
Working Principle
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TFI Board Functions
In MGW system, T network unit provides switching function for the TDM timeslots between boards (for example DTB or VTC) inside the DTU and TCU. TFI is the interface of the T network unit. It provides interfaces from the TSNB inside the T network unit to the external DTU and TCU.
TFI Board Technical Indices
18 W
Supported
Each pair of TFIs supports the access of 64K timeslots.
SONET Digital Trunk Board (SDTB) This section describes the SDTB board.
This section includes the following topics.
T AB L E 103 TO P I C S I N SONET D I G I T AL TR U N K B O AR D (SDTB) S E C T I O N
Topics Page No.
SDTB Board Appearance 188
SDTB Board Working Principles 194
SDTB Board Functions 195
SDTB Board Technical Indices 195
SDTB Board Appearance
This section describes the SDTB board, including the front panel view, layout view of the circuit board, indicators, buttons, DIP switches, jumpers, and external interfaces.
Figure 103 shows the panels of the SDTB, and Figure 104 shows its circuit layout.
Power Consumption
Hot Swap
Service capability
Introduction
Contents
Overview
Outside View
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 189
F I G U R E 103 SDTB P AN E L
SDTB
ENUM RUN
ALMACTEXCH
RST
TX
RX
SD
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F I G U R E 104 SDTB L AY O U T
EC subcard 1 EC subcard 2
EC subcard 3
EC subcard 4
There are five indicators on the SDTB panel, as shown in Table 104.
T AB L E 104 I N D I C AT O R S O N SDTB P AN E L
Name Color Indication Description
RUN Green RUN indicator
Flashing at 5 Hz: the board is powering on.
Flashing at 1 Hz: the circuit board runs normally.
ALM Red Alarm indicator
On: An alarm exists on the board.
Off: No alarm on the module.
Indicators
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 191
Name Color Indication Description
ENUM Yellow Board extraction indicator
When the board is plugged into a slot, the ENUM indicator is on. That is, when the software is not started when the board is powering on, the ENUM indicator is on.
When the software detects the ENUM signal and knows that the extractor is closed, the ENUM indicator is turned off, indicating that the system starts to work.
To unplug the board, open the extractor first and turn the switch slightly. An ENUM interruption signal is generated to the CPU. After the CPU exits from the working status under the control of the system, the ENUM indicator comes on, meanwhile the system continuously checks whether the ENUM signal is changed. When the ENUM indicator is on, it indicates that the board can be plugged. (If the ENUM indicator is off, do not unplug the board forcedly. Otherwise, services will be lost.)
If the maintenance personnel close the extractor again without unplugging the board, then the software can detect that the ENUM signal is changed, thus knows the extractor is closed again. The software restarts to enter the working status, and the ENUM indicator is off simultaneously.
ACT Green Active/standby indicator
On: module active.
Off: module active.
SD Green Optical signal indicator
Indicating whether the optical module has received optical signals.
Table 105 shows the buttons on the SDTB panel.
T AB L E 105 BU T T O N S O N SDTB M O D U L E
Name Description
RST Resets the SDTB board.
EXCH Performs the active/standby changeover of the SDTB board.
Button Description
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There is no DIP switch or jumper on the SDTB board.
The SDTB provides one STM-1 external optical interface.
If 8K reference clock is not retrieved from STM-1 line, then no back board is used.
If 8K reference clock is retrieved from STM-1 line, then RGIM1 is used. Figure 105 shows the panel of RIMG1.
DIP Switch and Jumper
External Interfaces
Rear Board
Chapter 3 MGW Boards
Confidential and Proprietary Information of ZTE CORPORATION 193
F I G U R E 105 RGIM1 P AN E L
8KO
UT/
DE
BU
G-2
32
RGIM1
The RGIM1 board provides the following interface:
8KOUT/DEBUG-232 (RJ45 interface): Outputs the 8K system clock to the UIM board and provides the reference clock to the boards in the shelf. In addition, this interface can be used for debugging, and does not provide service functions in this case.
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SDTB Board Working Principles
The SDTB board provides the STM-1 optical trunk interface for the system.
Figure 106 shows the working principle of the SDTB.
F I G U R E 106 SDTB B O AR D W O R K I N G P R I N C I P L E S
CPU subsystem
Ethernet PHY
Overhead
processing circuit
Mapping&
framing
circuit
Sw
itching circuit
8K
16M
2×8K
Board slot information
Optical module
Add/data bus
Optical fiber
Debug serial port
100M Ethernet
Clock drive
Drive
8K
16M
8K
Trans-former
Debug RJ45
Active/standby signal
Power supply
-48V
+3.3V,+5V+1.8V
STM-1
Clock phase-
locked drive
FPGAEPLD
19.44M
19.44M16M, 8K
TDMB
TDMA
To CLKG
To UIM
Drive
Drive
Overhead
16M, 8K
To FPGA
Ethernet PHY
Transformer
Debug RJ45
10M Ethernet to peer board
EC
Subcard
Bypass
The Circuitry of SDTB includes following parts:
CPU subsystem
155.52 MHz optical/electrical interface circuit
Switching circuit
Overhead processing circuit
Mapping and framing circuit
Data received from STM-1 optical interface is sent to the overhead processing circuit. Overhead processing circuit performs operations such as clock phase-locking and synthesis, section overhead processing, parallel-to-serial conversion, channel overhead processing and pointer processing on the data. Then the overhead processing sends data to the mapping and framing circuit for de-mapping. After that, data sends to framer and then sent to the backplane through switching circuit as 8MHW. If the EC function is needed, 8M HW is sent by the switching circuit and then sent to the backplane through the EC
Overview
Schematic Diagram
Working Principles
Chapter 3 MGW Boards
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circuit. Framer can process CAS, which is then retrieved by the CPU. Mapping and framing circuit does not process CCS. Communication link data of the CPU is sent to the UIM through HDLC. Similarly, the switching circuit retrieves the communication link data from 8MHW of the backplane, and then sends the data through HDLC to the CPU for processing. Voice channel is sent to the mapping and framing circuit as 8 MHz. Mapping and framing circuit maps the voice channel and then sends it to the overhead processing circuit.
SDTB Board Functions
The SDTB provides the STM-1 trunk interface for the system. It can process the CAS signaling and CCS signaling. Each board has the processing capability of 63 E1s or 84 T1s.
It is usually used for the Nb interface (TDM bearer), and the access of the A and Ai interfaces. It also provides the EC function.
SDTB has the following functions:
It provides one 155 M STM-1 standard interface.
It is compatible with E1 and T1.
It provides AU pointer processing, mapping and de-mapping functions for the STM-1 signal.
It supports CAS and CCS.
It provides SDH network management function through the TDM.
It provides sixteen 8M HW to provide adaptation for the UIM.
It outputs two channels of differential 8K synchronization clock signal as the reference clock of the clock board.
It provides one 100M Ethernet interface for communicating with the UIM and transferring management information, control information, software version, and so on.
It provides functions such as remote reset and load and hardware WATCHDOG.
It provides active/standby communication and changeover functions.
SDTB Board Technical Indices
9.6 W
Supported
Description
Functions
Power Consumption
Hot Swap
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The SDTB can process 63 channels of E1 signals or 84 channels of T1 signals.
Power Distribution Board (PWRD) This section describes the PWRD board.
This section includes the following topics.
T AB L E 106 TO P I C S I N P O W E R D I S T R I B U T I O N B O AR D (PWRD) S E C T I O N
Topics Page No.
PWRD Board Appearance 196
PWRD Board Working Principles 198
PWRD Board Function 199
PWRD Board Technical Indices 199
Corresponding Interface Board 200
PWRD Board Appearance
This section describes the PWRD, including the front panel view, layout view, indicators, DIP switches, and jumpers.
The PWRD is installed in the power distribution shelf, so it has no panel.
Figure 107 shows the layout of PWRD.
F I G U R E 107 L AY O U T D I AG R AM O F PWRD B O AR D
3214
23 14
There are eight indicators on the PWRD panel, as shown in Table 107.
Service capability
Introduction
Contents
Overview
Outside View
Indicators
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T AB L E 107 I N D I C AT O R S O N T H E PWRD BO AR D
Name Color Indication Description
RUN Green RUN indicator Flashing at 5 Hz: the program version is being updated.
Flashing at 1 Hz: the board is running normally.
-48V (I) Red -48 V power Alarm indicator of the first channel
On: -48V power supply of the first channel is unavailable or in over-voltage/under-voltage status.
Off: -48 V power supply of the first channel is normal.
-48V (II) Red -48 V power Alarm indicator of the second channel
On: -48V power supply of the second channel is unavailable or in over-voltage/under-voltage status.
Off: -48 V power supply of the second channel is normal.
FAN Red Fan alarm indicator
On: At least one fan is faulty.
Off: All of the fans are normal.
HOT Red Temperature alarm indicator
On: the ambient temperature exceeds the threshold.
Off: the ambient temperature is normal.
SMOKE Red Smoke alarm indicator
On: the smoke exceeds the threshold.
Off: the smoke is parameter is normal.
DOOR Red Access alarm indicator
On: At least one monitored door is open.
Off: all the monitored doors are closed.
ARRESTER Red Lightning arrester alarm indicator
On: the lightning arrester is damaged and need be replaced.
Off: the lightning arrester is normal.
1. There are three jumpers on the PWRD: X1, X2, and X8.
X1 is used to debug the hardware. When the board works normally, it is short-circuited by default. The jumper breaks up for hardware debugging only.
DIP Switch and Jumper
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X2 is used to download the EPLD logic.
X8 is used to select the RS485 matching mode.
1-2 and 9-10 are short-circuited to connect the terminal resistance. They should be short-circuited only when the PWRD is at the end of the RS485 bus.
3-4 and 7-8 are short-circuited to connect the RS485 port. They should be short-circuited only when the PWRD is in the middle of the RS485 bus.
5-6 are not used.
2. There are two DIP switches on the PWRD, S2 and S3.
S2 is used for software configuration. It is not used at present.
S3 is used for cabinet number configuration. ON = 0, OFF = 1. The jumper value is used as the address number for RS485 communication.
PWRD Board Working Principles
In the MGW system, the PWRD distributes, isolates, and backs up 2-channel -48 V power supply. It also monitors the power supply, cabinet, and environment.
Figure 108 shows the working principles of the PWRD.
F I G U R E 108 S C H E M AT I C D I AG R AM O F PWRD
Overview
Schematic Diagram
Chapter 3 MGW Boards
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The PWRD comprises the sensor interfaces of the environment parameter, voltage detection circuit, signal processing and optoelectronic isolation circuit, digital interface logic circuit, minimum single-chip computer, alarm LEDs, and RS485 serial communication interface circuit. In the case of -48 V over-voltage/under-voltage, power failure, fan abnormality, smoke signal, intrusion signal, or temperature/humidity threshold-crossing signal, an LED alarm signal is generated and then sent to the OMP, related functional boards or the background server through an RS485 port.
PWRD Board Functions
In the MGW system, the PWRD distributes, isolates, and backs up 2-channels -48 V power supply. It also monitors the power supply, cabinet, and environment.
Power supply
It provides the functions of the EMC filter design, lightening protection design, and isolation design at the input/output end of the power supply.
Environment monitoring
It provides the functions of the over-voltage/under-voltage test of 2-channel -48 V power supplies, rotary speed test of 18 fans, ambient temperature/humidity test, smoke-sensitive alarm test, infrared alarm test, cabinet access control and access control of the equipment room.
PWRD Board Technical Indices
The environment parameters of the PWRD are adjustable. Default alarm points are as follows.
Voltage: An alarm occurs when the voltage is lower than -60 V or higher than -42 V.
Equipment-room temperature: An alarm occurs when temperature is lower than 0 °C or higher than 40 °C.
Cabinet temperature: An alarm occurs when temperature is lower than 0 °C or higher than 70 °C.
Ambient humidity: An alarm occurs when humidity is higher than 90%.
Working Principles
Overview
Functions
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Corresponding Interface Board
The PWRD is installed in the power distribution shelf, and has no matching rear board. However, all of the external interfaces are provided by power distribution backplane PWRDB.
Figure 109 shows the layout of PWRDB.
F I G U R E 109 PWRDB B O AR D L AY O U T
The PWRD provides the following external signal interfaces.
Environment detection interfaces to connect the smoke sensor, temperature-humidity sensor, infrared sensor, and the access control sensors of the equipment room and cabinet.
Six groups of fan speed signal interfaces.
Two RS485 concatenated interfaces for connecting the OMP, and the RS485 cables used for the interconnection of cabinets.
Introduction
View
External Interface
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C h a p t e r 4
Integrated Alarm Box
Overview
This chapter describes the appearance, functions and principle of the integrated alarm box.
This chapter includes the following topics.
T AB L E 108 TO P I C S I N CH AP T E R 4
Topic Title Page No.
Appearance 201
Functions 202
Principle 203
Appearance
Figure 110 shows the panel of the Integrated Alarm Box.
F I G U R E 110 IN T E G R AT E D AL A R M B O X P A N E L
Introduction
Contents
Panel Description
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There are four indicators with different colors: red, blue, yellow, and green that indicate the level of alarm from higher to lower.
The corresponding alarm indicator flashes or stays on when an alarm is generated.
Environment alarm is processed as a certain level alarm, and no separate alarm indicator is set for it.
The Integrated Alarm Box implements alarm display functions with LCM. The dimension of LCM is lattice graphics display mode, and the front size is controlled by software to display different type of information.
The light on LCD is usually closed just to extend the life of light.
The light is powered on to enhance the effect of display on pressing key or displaying information.
There are some keys on the alarm box, which implements operation & maintenance functions with LCM.
Menu Key “M”: selecting menus.
Left arrow key: moving cursor to left when inputting numbers.
Right arrow key: moving cursor to right when inputting numbers.
Up arrow key: selecting menus, roll up or plus “1”.
Down arrow key: selecting menus, roll down or minus “1”.
Cancel key “C”: return menu or clear up.
Confirm key “OK”: confirming the operation.
Functions
The integrated alarm box has the characteristic of the previous alarm box with extra advantages and special features. Having distinct advantages, powerful functions and beautiful appearance, the integrated alarm box can meet the new requirements and future development requirements.
The alarm box employs the modular integrated design, which not only implements basic alarm functions but also implements enhanced functions to meet other requirements by using plug-in or components according to different configurations
According to different configurations, the integrated alarm box can implement the following functions to meet the requirements of different products:
Audio and visual alarms: The alarm box receives the alarm information from the OMC server, and the indicators on the alarm box indicate the severity of the alarm information. The alarm box also can give alarms through voice ringing of DC electrical bell.
Indicators
LCD
Keyboard
Overview
Functions
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Hearing alarms: The voice management function of the background can record, edit and pre-play the voice, and download the voice file to the FLASH of the alarm box. Compared with the simple audio frequency alert tone, the alarm function with voice is more visual, diversified, and needs less hardware and software processing.
Display: The integrated alarm box displays the current alarm information, which includes locus, date and detailed content of the alarm.
Transmission: The integrated alarm box transmits the current alarm information to the maintenance persons. through wireless or lineate medium
Query: The integrated alarm box receives remote query orders, and transmits the current alarm information or parameters of equipment working status to the remote end.
Multi-office: Various kinds of communication equipment in one switching office can use one alarm box to indicate alarm information for different equipments.
Operation & maintenance: The alarm box can set parameters, diagnose itself and can be queried with the man-machine interface.
Remote end: The alarm box can be put in an office, which is hundred meters away from the equipment room.
GPS time choice: By using the time choice function of GPS receiver, the alarm box provides exact time or steady synchronous clock reference for equipment.
Interface: The alarm box provides not only Ethernet interface, but also RS232 and RS485 serial interfaces to connect to foreground or background directly.
The alarm box can be used at both the locale and the remote end. When used at the remote end, the alarm box connects with the remote server, such as being used for the OMC system or the integrated maintenance center. Through PLMN/PSTN, the remote alarm box can receive and display alarm information from some local alarm boxes or receive the local alarm files, and can send commands to the locale.
Furthermore, the remote sever receives alarm information from the locale through data net, then the remote alarm box displays the alarm information.
Principle
Figure 111 shows the principle of the integrated alarm box. Schematic Diagram
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F I G U R E 111 IN T E G R AT E D AL AR M B O X P R I N C I P L E S
Serial EPROM
485 Interface
MS Module
GPS Module
232 Interface
Ethernet Transceiver
Voice Codec
RJ 11
RJ 11
DB 9
RJ 45
Buzzer
Standby Interface
Alarm Tone
LCD Module
ALMP
EPLDUnit
The integrated alarm box is composed of the ALMP, ALMK and ALML boards.
ALML board: Includes alarm indicators with four levels (in four colors) and corresponding drive circuits.
ALMK board: Includes key-press, adaptive socket of LCS module, providing power for LCD module to work normal and negative circuit for LCD display. The card and LCD module can be cancelled if the LCD is not necessary.
ALMP board: main processor card completes alarm information receiving and processing, generates and transmits audio & visual alarms. It consists of control circuit, interface circuit, and acts as a mother board for connection of the ALML and ALMK boards.
Principle Description
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C h a p t e r 5
MGW Inner Cables
Overview
This chapter describes cables inside the cabinet, mainly focusing on the function of the inner cables, connection position at both ends, wire routing and signal features. The inner cables refer to the cables that are interconnected within the cabinet without going out of the cabinet.
Note:
The cables inside the cabinet are connected before delivery. The engineer only needs to check whether the cable wiring is tidy, secure and reasonable, and whether there is any wrong insertion or missing insertion.
This chapter includes the following topics.
T AB L E 109 TO P I C S I N CH AP T E R 5
Topics Page No.
System Clock Cable 206
Line Reference Clock Cable 207
Interconnection Cable on the Control Panel 208
PD485 Cable 209
Fan Monitoring Cable 209
Power Cables 210
Grounding Cables 215
Interconnection Fiber for TDM Switching Network 218
Interconnection Fiber for Packet Switching Network 220
Introduction
Contents
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System Clock Cable
It implements the connection between the clock generator board CLKG and the UIM board for transmitting the clock signal (8 K, 16 M, and PP2S), and distributes synchronous clock signal to various shelves inside the MGW system. Every system clock cable implements the clock distribution to three shelves (that is, six UIMC/UIMU boards).
Cable end A connecting to the CLKG is the DB44 (pin) connector, while the cable end B connecting to UIM is the DB9 (pin) connector. The cable adopts six 8-core single-strand round cables. The cable structure is shown in Figure 112.
F I G U R E 112 S T R U C T U R E D I AG R AM O F S Y S T E M C L O C K C AB L E
Label
End A
End B1
End B2
End B3
End B4
End B5
End B6
Label
Label
Label
Label
Label
Label
Cable end A is located physically at the silkscreen identifier “CLKOUT” on the panel of the rear board RCKG1 and RCKG2.
Cable end B is divided into three groups, B1-2, B3-4, and B5-6. Each group connects to a shelf. Two terminals in one group connect to the corresponding rear board of active/standby UIMC or UIMU. When cable end B is connected to the UIMC, two terminals in one group respectively connect at the silkscreen identifier “CLK_IN” on the rear board RUIM2 and RUIM3. And when cable end B is connected to the UIMU, these two terminals are respectively connected at the silkscreen identifier “CLK_IN” on two rear boards RUIM1.
The signal flows from end A to end B.
1. 16 M refers to 16 MHz clock signal when the duty ratio is 50%.
2. Required time sequence relation between 8 K frame header and 16 M clock is as follows.
Functions
Structure
Connection Position
Wire Routing
Signal Flow Direction
Signal
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8 K frame header is in form of negative pulse; the rising edge of the 16 M clock starts the falling edge of the 8K frame header.
Width of the negative pulse, 8K frame header, is one 16M cycle.
Width of one frame is 125 μs.
3. PP2S signal meets the following requirement.
The PP2S is in form of negative pulse with its cycle as 2 s.
The width of the negative pulse is one CHIP clock (1.2288MHz) cycle.
Line Reference Clock Cable
The clock reference source of the CLKG is the upper-office 8 K line reference clock sent by the service board (APBE, SPB, DTEC, and DTB). Line reference clock cable implements connection between the service board and the system clock board CLKG. It sends the 8K reference clock signal to system clock board for phase-lock selection, and generates system synchronous clock.
Both ends of the cable are the 8P8C straight crimping shielding connectors, and the cable adopts 4-core single-strand round cable. The cable structure is shown in Figure 113.
F I G U R E 113 S T R U C T U R E D I AG R AM O F L I N E 8 K C L O C K C AB L E
Cable end A is located physically at the silkscreen identifier “8KOUT/DEBUG-232” on the rear board RSPB, RSPB, or RGIM1, or at the silkscreen identifier “8KOUT/ARM232” on the rear board RMNIC. These rear boards provide the reference clock.
Cable end B is located physically at the silkscreen identifier “8KIN1” and “8KIN2” on the panel of the rear board RCKG1.
Signal flows from the service board (end A) to the CLKG board (end B).
8K frame header extracted from the line
Functions
Structure
Connection Position
Signal Flow Direction
Signal
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Interconnection Cable on the Control Panel
The interconnection cables on the control panel implement the tandem from the control plane Ethernet of each cascade shelf to the CHUB in the control shelf.
Cable end A is the DB44 (pin) connector, while the cable end B is the 8P8C straight crimping shielding connector. The cable adopts the FTP super category-5 shielding data cable. Figure 114 shows the cable structure.
F I G U R E 114 S T R U C T U R E D I AG R AM O F C O N T R O L P L AN E T AN D E M C AB L E
Label
Cable end A is located physically at any one of the silkscreen identifiers, which are FE1-8, FE9-16, FE17-24, FE25-32, FE33-40, and FE41-46, on the rear board RCHB1 or RCHB2.
Cable end B1~B8 are divided into four groups. End B2n-1 and End B2n (n=1~4) are in the same group. Each group connects to a shelf with two physical connections. Take End 1 and End 2 for example. When the cable is connected with the resource shelf, End B1 is located at the silkscreen identifier “FE-C1/3” on one RUIM1 board, while End B2 is located at the silkscreen identifier “FE-C1/3” on another RUIM1 board. When the cable is connected with other control shelf or switching shelf, End B1 is located at the silkscreen identifier “FE2n-1” on the RUIM2 board, while End B2 is located at the silkscreen identifier “FE2n” on the RUIM3 board (n=1~5).
100 M full-duplex Ethernet signal
Functions
Structure
Connection Position
Signal
Chapter 5 MGW Inner Cables
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PD485 Cable
PD485 cable is used for RS485 communication between the OMP and power distribution module to monitor the status of the PWRD board.
Both ends of the cable are the 8P8C straight crimping shielding connectors, and the cable adopts the FTP super category-5 shielding data cable. Figure 115 shows the cable structure.
F I G U R E 115 S T R U C T U R E D I AG R AM O F PD 485
END B
END A
LABEL
LABEL
Cable end A is located physically at the silkscreen identifier “PD485” on the panel of the rear board RMPB.
Cable end B is located physically at the silkscreen identifier “RS485” on the power distribution board PWRDB (the port above two RS485s).
The signal flows in dual direction.
Half-duplex RS485 signal
Fan Monitoring Cable
The fan monitoring cable connects the power distribution shelf with the fan shelf, facilitating the system monitoring the fan.
Both ends of the cable are the 8P8C straight crimping shielding connectors, and the cable adopts the FTP super category-5 shielding data cable. Figure 116 shows the cable structure.
F I G U R E 116 S T R U C T U R E D I AG R AM O F PD 485
END B
END A
LABEL
LABEL
Functions
Structure
Connection Position
Signal Flow Direction
Signal
Functions
Structure
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Cable end A is located physically at RJ45 connector at the left back of the fan shelf, or at the left top-mounted fan rack.
Cable end B is located physically at the silkscreen identifier “FAN BOXn” (n=1~4) on the interface board PWRDB in the power distribution shelf.
The signal flows from the fan shelf to the power monitoring board.
Level signal of fan monitoring
Power Cables
Figure 117 shows the overall wire connection of the power system in the cabinet.
Connection Position
Signal Flow Direction
Signal
Overall Wire Connection
Chapter 5 MGW Inner Cables
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F I G U R E 117 OV E R AL L W I R E C O N N E C T I O N O F C AB I N E T P O W E R
Wiring shelf
BCTC
Fan shelf
-48V
-48V
PE
-48VGND
-48VGND
BCTC
BCTC
BCTC
Cabinet ground
Filter
-48V-48VGND
PE
-48VGND-48V
-48V-48VGND
PE
-48VGND-48V
-48V-48VGND
PE
-48VGND-48V
-48V-48VGND
PE
-48VGND-48V
PE
-48V-48VGND
BusbarGround grid
Filter
Wiring shelf
Fan shelf
Wiring shelf
Wiring shelfFan shelf
Functions
-48V power incoming line, blue, is used for accessing -48V power from the EMI filter on top to distribution shelf and then accessing the -48V from the power distribution shelf to cabinet busbar.
-48VGND power incoming line, black, is used for accessing -48VGND from the EMI filter on top to distribution shelf and
-48V Power Cable
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then accessing the -48VGND from the distribution shelf to cabinet busbar.
Schematic diagram
Figure 118 shows the structure of the -48V power cable.
F I G U R E 118 -48V P O W E R CAB L E
Technical indices
Table 110 shows the technical indices of the -48V power cable.
T AB L E 110 -48V P O W E R CAB L E
Item Technical Indices
Nominal cross-sectional area 16 mm2
Rated voltage 450 V
Highest operational temperature 70 °C
Fire resistant Supported
Functions
The service shelf power cable implements the connection of power -48V, -48VGND, PGND, and GND from the busbar to shelf filter and from the shelf filter to the backplane. In this way, it accomplishes power supply to the shelf.
Schematic diagram
Figure 119 shows the structure of the power cable between the busbar and the shelf filter. Figure 120 shows the power cable from the shelf filter to the backplane.
F I G U R E 119 P O W E R C AB L E F R O M B U S B AR T O S H E L F F I L T E R (C AB L E 1 )
Service Shelf Power Cable
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Note: End C connects to the power interface on the shelf filter, and B1~B3 connect to the busbar.
F I G U R E 120 P O W E R C AB L E F R O M S H E L F F I L T E R T O BA C K P L A N E (C AB L E 2 )
Note: Direction C is a shelf filter, and B1~B3 connect to the backplane.
Technical indices
Table 111 shows the technical indices of the power cable from a busbar to a shelf filter.
T AB L E 111 PO W E R C AB L E F R O M B U S B AR T O S H E L F F I L T E R
Item Technical Indices
Nominal cross-sectional area 6 mm2
Maximum DC resistance at 20 3.3 Ω/km
Insulation thickness rating 0.8 mm
Rated voltage 450 V
Highest operational temperature 70 °C
Table 112 shows the technical indices of the power cable from a shelf filter to the backplane.
T AB L E 112 PO W E R C AB L E F R O M S H E L F F I L T E R T O B AC K P L AN E
Item Technical Indices
Nominal cross-sectional area 4 mm2
Maximum DC resistance at 20 4.95 Ω/km
Insulation thickness rating 0.8 mm
Rated voltage 450 V
Highest operational temperature 70 °C
Functions
Fan shelf power cable implements the power connection from the busbar to the fan shelf, supplying power to fans in the fan shelf.
Schematic diagram
Fan Shelf Power Cable
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The structure of fan shelf power cable is shown in Figure 121.
F I G U R E 121 S T R U C T U R E D I AG R AM O F F A N S H E L F P O W E R C AB L E
Technical indices
Table 113 shows the technical indices of the Fan shelf power cable.
T AB L E 113 FAN S H E L F P O W E R C AB L E
Item Technical Indices
Nominal cross-sectional area 1 mm2
Maximum DC resistance at 20 19.5 Ω/km
Insulation thickness rating 0.6 mm
Rated voltage 300 V
Highest operational temperature 70 °C
Function
The set-top fan shelf power cable implement the power connection from the busbar to the set-top fan shelf, supplying power to fans in the set-top fan shelf.
Structure
Figure 122 shows the structure of set-top fan shelf power cable.
F I G U R E 122 S T R U C T U R E D I AG R AM O F S E T -TO P F AN S H E L F P O W E R C AB L E
Set-Top Fan Shelf Power
Cable
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Note: End A connects to the set-top fan shelf, while end B1~B3 connect to the busbar.
Technical indices
Table 114 shows the technical indices of the Fan shelf power cable.
T AB L E 114 FAN S H E L F P O W E R C AB L E
Item Technical Indices
Nominal cross-sectional area 1 mm2
Maximum DC resistance at 20 19.5 Ω/km
Insulation thickness rating 0.6 mm
Rated voltage 300 V
Highest operational temperature 70 °C
Grounding Cables
Figure 123 shows the overall wire connection of the grounding system in the cabinet.
Overall Wire Connection
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F I G U R E 123 OV E R AL L W I R E C O N N E C T I O N O F GR O U N D I N G C AB L E
Wiring shelf
BCTC
Fan shelf
-48V
-48V
PE
-48VGND
-48VGND
BCTC
BCTC
BCTC
Cabinet ground
Filter
-48V-48VGND
PE
-48VGND-48V
-48V-48VGND
PE
-48VGND-48V
-48V-48VGND
PE
-48VGND-48V
-48V-48VGND
PE
-48VGND-48V
PE
-48V-48VGND
BusbarGround grid
Filter
Wiring shelf
Fan shelf
Wiring shelf
Wiring shelfFan shelf
Functions
The cabinet-door grounding cable connects the front/back door of the cabinet with the cabinet ground.
Schematic diagram
Figure 124 shows the structure of the grounding cable of the cabinet door.
Cabinet-Door Grounding
Cable
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F I G U R E 124 C AB I N E T -D O O R GR O U N D I N G C AB L E
Technical indices
Table 115 shows the technical indices of the fan shelf power cable.
T AB L E 115 FAN S H E L F P O W E R C AB L E
Item Technical Indices
Nominal cross-sectional area 6 mm2
Maximum DC resistance at 20 3.3 Ω/km
Insulation thickness rating 0.8 mm
Rated voltage 450 V
Highest operational temperature 70 °C
Function
The protective grounding transit cable connects the busbar protection ground and the cabinet ground.
Schematic diagram
Figure 125 shows the structure of the protective grounding transit cable.
F I G U R E 125 P R O T E C T I V E GR O U N D I N G TR AN S I T C AB L E
Technical indices
Table 116 shows the technical indices of the protective grounding transit cable.
T AB L E 116 PR O T E C T I V E GR O U N D I N G TR A N S I T C AB L E
Item Technical Indices
Nominal cross-sectional area 25 mm2
Rated voltage 450 V
Highest operational temperature 70 °C
Fire resistant Supported
Protective Grounding
Transit Cable
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Function
The shelf grounding grid cable connects the shelves to the cabinet grounding grid to ensure the reliable lap-connection between shelves and rack.
Structure
The structure of the shelf grounding grid cable is shown in Figure 126. Without directivity, either End A or End B can be connected to the PE interface of the shelf or the grounding grid.
F I G U R E 126 S H E L F GR O U N D I N G GR I D C AB L E
Technical indices
Table 117 shows the technical indices of the protective grounding tandem cable.
T AB L E 117 PR O T E C T I V E GR O U N D I N G T AN D E M C AB L E
Item Technical Indices
Nominal cross-sectional area 10 mm2
Rated voltage 450 V/750 V
Highest operational temperature 70 °C
Fire resistant Supported
Interconnection Fiber for TDM Switching Network
The interconnection fiber for the TDM switching network is used to connect the data over TDM in the resource shelf or GE switching resource shelf to the circuit switching shelf for T network switching.
From resource shelf to circuit switching shelf
Figure 127 shows the fiber connection from the resource shelf to the circuit switching shelf with full capacity. The value of N in "Sn" is 1, 3, 5, or 7.
For half switching capacity of 8K, active and standby boards individually connect a pair of optical interfaces.
For 16K full switching capacity, active and standby boards individually connect two pairs of optical interfaces.
Shelf Grounding Grid
Cable
Functions
Fiber Connection
Chapter 5 MGW Inner Cables
Confidential and Proprietary Information of ZTE CORPORATION 219
F I G U R E 127 IN T E R C O N N E C T I O N F I B E R F O R TDM S W I T C H I N G N E T W O R K (FU L L S W I T C H I N G CAP AC I T Y )
From GE switching resource shelf to circuit switching shelf
The fiber connection from GE switching resource shelf to circuit switching shelf with full switching capacity is as follows.
The fourth ~ eighth pairs of optical interfaces on the left active GUIM panel are connected to the first ~ fourth or fifth ~ eighth pairs of optical interfaces on the left TFI panel.
The fourth ~ eighth pairs of optical interfaces on the right standby GUIM panel are connected to the first ~ fourth or fifth ~ eighth pairs of optical interfaces on the right TFI panel.
Each pair of optical interface interconnection provides 8K switching capacity. The full switching capacity is 32K (All of the four pairs of optical interfaces are connected with the circuit switching shelf).
The signal is 640 M optical signal.
Technical Indices
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Interconnection Fiber for Packet Switching Network
The interconnection fiber for the packet switching network is used to connect the packet data in the resource shelf to the circuit switching shelf for packet switching.
From resource shelf to packet switching shelf
Eight fibers are used to implement the fiber connection with the intra-board and inter-board optical port protection, as shown in Figure 128. The “n” in the SDn port is 1, 3, 5, or 7.
F I G U R E 128 IN T E R C O N N E C T F I B E R F O R PAC K E T S W I T C H I N G N E T W O R K (U IMT-GLI )
From GE switching resource shelf to packet switching shelf
16 fibers are used to implement the fiber connection with the intra-board and inter-board optical port protection, as shown in Figure 129. The “n” in the SDn port is 1 or 4.
Overview
Fiber Connection
Chapter 5 MGW Inner Cables
Confidential and Proprietary Information of ZTE CORPORATION 221
F I G U R E 129 IN T E R C O N N E C T F I B E R F O R PAC K E T S W I T C H I N G N E T W O R K (GUIM -GLI )
The signal is 1000 M optical signal. Technical Indices
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Confidential and Proprietary Information of ZTE CORPORATION 223
C h a p t e r 6
MGW Outer Cables
Overview
This chapter describes outer cables of the MGW cabinet. Outer cables are used to connect external system out of the cabinet.
This chapter includes the following topics.
T AB L E 118 TO P I C S I N CH AP T E R 5
Topics Page No.
Environment Monitoring Transit Cable 224
Hygrothermal Sensor Cable 225
Smoke Sensor Cable 226
Infrared Sensor Cable 227
Access Control Sensor Cable 228
Cable from Carrier Power Supply to Cabinet-Top Filter Power Supply
229
Cables between Cabinet Protective Ground and Equipment Room Ground
230
75 Ω E1 Trunk Cable 231
120 Ω E1 Trunk Cable (3×16-Core) 234
120 Ω E1 Trunk Cable (11×4-Core) 237
100 Ω T1 Trunk Cable (50-Core) 240
100 Ω T1 Trunk Cable (6×8-Core) 242
OMC Ethernet Cable 245
Inter-Cabinet PD485 Interconnection Cable 246
IP Access Cable of Mc Interface 247
User Plane Interconnection Cables of Nb Interface 247
Introduction
Contents
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Environment Monitoring Transit Cable
The environment monitoring transit cable is used to connect the PWRD board in the power distribution shelf to connect the outer sensors and access control system. One end of the cable connects with the power distribution shelf, and the other end with five DB9 connectors connects with different sensors and access control system.
Figure 130 shows the structure of the environment monitoring transit cable.
F I G U R E 130 S T R U C T U R E O F E N V I R O N M E N T M O N I T O R I N G TR AN S I T C A B L E
End A is located physically at the silkscreen identifier “SENSORS” on rear of the power distribution shelf, and end B connects with various sensors or access control system. The corresponding relation between each connector of the cable and the sensor is shown in Table 119.
T AB L E 119 CO R R E S P O N D I N G C O N N E C T I O N R E L AT I O N
End B ID Corresponding Sensor
B1 Access control sensor
B2 Infrared sensor
B3 Hygrothermal sensor
B4 Smoke sensor
B5 Reserved
Technical indices of the environment monitoring transit cable are shown in Table 120.
Function
Structure
Technical Indices
Chapter 6 MGW Outer Cables
Confidential and Proprietary Information of ZTE CORPORATION 225
T AB L E 120 TE C H N I C AL I N D I C E S O F E N V I R O N M E N T M O N I T O R I N G TR AN S I T C AB L E
Item Indices
Conductor Tin-coated copper, chlorinated polyethylene insulation
Sheath Complying with the requirements in the GB8815 for the Type H-70 chlorinated polyethylene sheath material
Nominal diameter of conductor 0.4 mm
Nominal insulation thickness 0.2 mm
Nominal sheath thickness 0.6 mm
DC resistance < 153 Ω/km
Characteristic impedance 100 Ω
Attenuation < 40 dB/km (1 MHz)
Insulation resistance ≧ 500 MΩ/km
Working capacitance <120 nF/km (1 kHz)
Transmission frequency 10 MHz
Hygrothermal Sensor Cable
The hygrothermal sensor cable is used to connect the hygrothermal sensor with the End B3 of the environment monitoring transit cable to monitor the ambient temperature and humidity.
In the hygrothermal sensor, the humidity core adopts humidity-sensitive capacitance elements. After linearization processing of the single-chip computer, the system outputs frequency signals without A/D transfer. It directly collects and processes the hygrothermal signal value through computer. It is installed with wall-mounted mode, with hidden cabling slot at the back of the transmitter.
Figure 131 shows the schematic diagram of the hygrothermal sensor. End A connects with the End B3 of the environment monitoring transit cable, while End B connects with the hygrothermal sensor.
Functions
Structure
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F I G U R E 131 H Y G R O T H E R M AL S E N S O R C AB L E
End A End B
CD
Direction C Direction D
Label
Label
Male Female
Table 121 shows technical indices of the hygrothermal sensor.
T AB L E 121 TE C H N I C AL I N D I C E S O F T H E HY G R O T H E R M AL S E N S O R
Item Indices
Humidity precision ±3% RH (25 °C), 25-95% RH (typical)
Temperature precision ±0.5 °C (25 °C)
Output
(0~+50, 0%RH ~100%RH)
1 kHz~1.5 kHz square wave;
1 kHz~2 kHz square wave
Supplied voltage 5 V~12 V DC
Working temperature -20 °C~+80 °C
Smoke Sensor Cable
The smoke sensor cable is used to connect the smoke sensor and the End B4 of the environment monitoring transit cable, monitoring the environmental smoke signal.
The exploration room of the smoke sensor is in herringbone maze structure. It can effectively probe smoke at the initial smoldering stage or smoke generated after the fire breaks out. When the smoke enters the explorer, the light source scatters and the light-receiver senses the light signal; when light intensity reaches the preset threshold value, the explorer generates fire alarm signal, lightens its own fire-alarm-indicator (red) to confirm a fire, and outputs alarm signal to peripheral devices.
Figure 132 shows the cable structure of the smoke sensor. End A connects with the End B4 of the environment monitoring transit cable, while End B connects with the smoke sensor.
Technical Indices
Functions
Schematic Diagram
Chapter 6 MGW Outer Cables
Confidential and Proprietary Information of ZTE CORPORATION 227
F I G U R E 132 SM O K E S E N S O R C AB L E
Schematic diagram of sensor base pin
LED
Label
Label
Direction C
End A
End B
C
Table 122 shows technical indices of the smoke sensor.
T AB L E 122 TE C H N I C AL I N D I C E S O F T H E SM O K E S E N S O R
Item Indices
Working voltage 17 V~33 V DC
Alert current ≤25 μA
Working temperature -10 °C~+50 °C
Relative humidity ≤95% (40 °C±2 °C)
Alarm current ≤15 mA
Source of emission Am241 source < 2.59×104 Bq (0.7 μci)
Outline dimensions Explorer: 100×39.9 mm;
Base:104×12 mm
Online mode Double wires: power supply anode (pin 3), signal (pin 6)
Installation Mode Ceiling exposed, protected area (storey height H<6 M): 60 M2
Infrared Sensor Cable
The infrared sensor cable is used to connect the infrared sensor and the End B2 of the environment monitoring transit cable.
There are micro wave transmitting antenna and receiving antenna on the infrared sensor. The microwave frequency transmitted by the explorer is set as ft. After reflection, the frequency of the reflected microwave received by the explorer is
Technical indices
Functions
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228 Confidential and Proprietary Information of ZTE CORPORATION
set as fr. f=f t-fr, when f is not equal to zero, the system outputs alarm signal.
Figure 133 shows the cable structure of the infrared sensor. End A connects with the End B2 of the environment monitoring transit cable, while End B connects with the infrared sensor.
F I G U R E 133 IN F R AR E D S E N S O R C AB L E
Technical indices of the infrared sensor are shown in Table 123.
T AB L E 123 TE C H N I C AL I N D I C E S O F T H E IN F R AR E D S E N S O R
Item Technical Indices
Working voltage 9 V~16 V DC
Working current 12 V DC: static 25 mA; start 45 mA
Working temperature -10 °C ~ 50 °C
Detection range 5 m ~ 15 m
Detection angle 90 °C
Access Control Sensor Cable
Access control sensor cable is used to monitor doors of equipment rooms and cabinet.
Figure 134 shows the cable structure of the access control sensor on the door of the equipment room. End A connects to the DB9 (the DB25 interface is converted into the DB9 interface) interface on the cable let out from the identifier “DOOR” on the back side of the power distribution shelf. End B connects to the access control sensor on the door of the equipment room.
Schematic Diagram
Technical Indices
Functions
Schematic Diagram
Chapter 6 MGW Outer Cables
Confidential and Proprietary Information of ZTE CORPORATION 229
F I G U R E 134 C AB L E S T R U C T U R E O F AC C E S S C O N T R O L S E N S O R (E Q U I P M E N T R O O M )
Label
Figure 135 shows the structure of the access control sensor cable. End A connects to the End B1 of the environment monitoring transit cable. End B connects to the access control sensor on the cabinet front or back door of the cabinet.
F I G U R E 135 C AB L E S T R U C T U R E O F AC C E S S C O N T R O L S E N S O R (C AB I N E T D O O R )
Table 124 shows technical indices of the access control sensor.
T AB L E 124 TE C H N I C AL I N D I C E S O F T H E AC C E S S C O N T R O L S E N S O R
Item Indices
Action distance 16 mm~45 mm
Working current ≤0.5 A
Working voltage ≤100 V DC
Life ≥1000000 hours (10 mVA)
Impedance 0.3 Ω
Withstand voltage 250 DCV
Cable from Carrier Power Supply to Cabinet-Top Filter Power Supply
This cable is used to connect the power supply in the equipment room and the filters on top of the cabinet.
Figure 136 shows the structure of the cable.
Technical Indices
Functions
Schematic Diagram
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F I G U R E 136 -48 V P O W E R C AB L E
Table 125 shows the technical indices.
T AB L E 125 TE C H N I C AL I N D I C E S O F -48V P O W E R C AB L E
Item Indices
Nominal cross-sectional area 25 mm2
Rated voltage 450 V
Highest operational temperature 70 °C
Fire resistant Supported
Cables between Cabinet Protective Ground and Equipment Room Ground
This cable connects the cabinet protective ground to the equipment room ground.
Figure 137 shows the structure of the cable.
F I G U R E 137 C AB L E B E T W E E N C AB I N E T P R O T E C T I V E GR O U N D AN D E Q U I P M E N T RO O M GR O U N D
Without directivity, either End A or End B can be connected to the protective ground on top of the cabinet or that of the equipment room.
The technical indices are shown in Table 126.
T AB L E 126 TE C H N I C AL I N D I C E S O F C AB L E S B E T W E E N C AB I N E T P R O T E C T I V E GR O U N D AN D E Q U I P M E N T RO O M GR O U N D
Item Indices
Nominal cross-sectional area 35 mm2
Technical Indices
Functions
Schematic Diagram
Technical Indices
Chapter 6 MGW Outer Cables
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Item Indices
Rated voltage 450 V
Highest operational temperature 70 °C
Fire resistant Supported
75 Ω E1 Trunk Cable
The common 75 Ω trunk cable used by DTB, DTEC and SPB boards implements non-balanced access of the external E1.
Figure 138 shows the structure of the 75 Ω trunk cable.
F I G U R E 138 75 Ω TR U N K C AB L E S T R U C T U R E D I AG R A M
Acting as the trunk cable of DTB/DTEC
The end A connects with the E1 interface (DB44 interface) of the RDTB. The RSPB has three groups of E1 interfaces connecting with three groups of cables, totally introducing 32 lines of E1 signal.
The first group of E1 cable introduces the No. 1~11 lines of E1 signal.
The second group of E1 cable introduces the No. 11~21 lines of E1 signal.
The third group of E1 cable introduces the No. 22~32 lines of E1 signal.
Each group of cables introduces at most 11 lines of E1 signal.
The End B1 corresponds to the first five lines of E1 signal.
The End B2 corresponds to the last 6 lines of E1 signal.
In the first group of cables, the last line of the B2 is not used.
The 10-core micro-coaxial cable is used at the End B1, while the 12-core micro-coaxial cable is used at the End B2. Corresponding to the sending of the E1 signal, the odd cores in the cables at the Ends B1 and B2 connect to the receiving end of the opposite end; corresponding to the receiving of the E1 signal, the even cores in the cables at the Ends B1
Functions
Schematic Diagram
Cable Connection
ZXWN MGW Media Gateway Hardware Description
232 Confidential and Proprietary Information of ZTE CORPORATION
and B2 connect to the coaxial sending end of the opposite end (for example, the first 2 cores correspond to a pair of E1).
Acting as the trunk cable of SPB
The End A connects with the E1 interface (DB44 interface) of the RSPB. The RSPB has 2-group E1 interfaces to connect with 2-group cables. It can introduce totally 16 lines of E1 signal.
The first group of E1 cable introduces the No. 1~11 lines of E1 signal.
The second group of E1 cable introduces the No. 12~16 lines of E1 signal.
Each group of cables introduces at most 11 lines of E1 signal.
The End B1 corresponds to the first five lines of E1 signal.
The End B2 corresponds to the last six lines of E1 signal.
The End B2 in the second group of cables is not used.
The 10-core micro-coaxial cable is used at the End B1, while the 12-core micro-coaxial cable is used at the End B2. Corresponding to the sending of the E1 signal, the odd cores in the cables at the Ends B1 and B2 connect to the receiving end of the opposite end. Corresponding to the receiving of the E1 signal, the even cores in the cables at the Ends B1 and B2 connect to the coaxial sending end of the opposite end (for example, the first 2 cores correspond to a pair of E1).
Table 127 shows the corresponding relationship between the pins on the port A and the core wires of the End B1.
T AB L E 127 CO R R E S P O N D I N G R E L AT I O N S H I P B E T W E E N P I N S O F P O R T A AN D C O R E W I R E S O F E N D B1
Pin Number at the End A
Cores at the End B1 Signal Name
36 E1_TX0+
35 The first core shield wire (OUT0)
E1_TX0-
34 E1_RX0+
33 The second core shield wire (IN0)
E1_RX0-
17 E1_TX1+
18 The third core shield wire (OUT1)
E1_TX1-
31 E1_RX1+
32 The fourth core shield wire (IN1)
E1_RX1-
16 E1_TX2+
1 The fifth core shield wire (OUT2)
E1_TX2-
2 The sixth core shield wire (IN2) E1_RX2+
Relationship between Pins
and Cores
Chapter 6 MGW Outer Cables
Confidential and Proprietary Information of ZTE CORPORATION 233
Pin Number at the End A
Cores at the End B1 Signal Name
3 E1_RX2-
21 E1_TX3+
22 The seventh core shield wire (OUT3)
E1_TX3-
6 E1_RX3+
7 The eighth core shield wire (IN3)
E1_RX3-
19 E1_TX4+
20 The ninth core shield wire (OUT4)
E1_TX4-
4 E1_RX4+
5 The tenth core shield wire (IN4)
E1_RX4-
Table 128 shows the corresponding relation between the pins at the End A and the cores at the End B2.
T AB L E 128 CO R R E S P O N D I N G R E L AT I O N B E T W E E N T H E P I N S AT T H E E N D A AN D T H E C O R E S AT T H E E N D B2
Pin Number at the End A
Cores at the End B2 Signal Name
25 E1_TX5+
26 The first core shield wire (OUT5)
E1_TX5-
10 E1_RX5+
11 The second core shield wire (IN5)
E1_RX5-
8 E1_TX6+
9 The third core shield wire (OUT6)
E1_TX6-
23 E1_RX6+
24 The fourth core shield wire (IN6)
E1_RX6-
12 E1_TX7+
13 The fifth core shield wire (OUT7)
E1_TX7-
27 E1_RX7+
28 The sixth core shield wire (IN7)
E1_RX7-
43 E1_TX8+
44 The seventh core shield wire (OUT8)
E1_TX8-
42 E1_RX8+
41 The eighth core shield wire (IN8)
E1_RX8-
14 E1_TX9+
15 The ninth core shield wire (OUT9)
E1_TX9-
29 E1_RX9+
30 The tenth core shield wire (IN9)
E1_RX9-
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Pin Number at the End A
Cores at the End B2 Signal Name
40 E1_TX10+
39
The eleventh core shield wire (OUT10) E1_TX10-
38 E1_RX10+
37 The twelfth core shield wire (IN10)
E1_RX10-
The cable adopts the 10-core and 12-core 75 Ω micro-coaxial cable. The outside diameter of one core is 2.6 mm or 2.0 mm.
Each trunk cable can provide 11-group E1 access.
120 Ω E1 Trunk Cable (3×16-Core)
The common 120Ω trunk cable used by DTB, DTEC and SPB boards implements balanced access of the external E1.
Figure 139 shows the structure of the 120 Ω trunk cable.
F I G U R E 139 S T R U C T U R E D I AG R AM O F 120 Ω TR U N K CAB L E (3×16-CO R E ) Lab
el
Acting as the trunk cable of DTB/DTEC
The End A connects with the E1 interface (DB44 interface) of the RDTB. The RSPB has three groups of E1 interfaces connecting with three groups of cables, totally introducing 32 lines of E1 signal.
The first group of E1 cable introduces the No. 1~11 lines of E1 signal.
The second group of E1 cable introduces the No. 11~21 lines of E1 signal.
The third group of E1 cable introduces the No. 22~32 lines of E1 signal.
Each group of cables introduces at most 11 lines of T1 signal.
The End B1 corresponds to the No. 1~4 lines of E1 signal.
The End B2 corresponds to the No. 5~8 lines of E1 signal.
Technical Indices
Functions
Schematic Diagram
Cable Connection
Chapter 6 MGW Outer Cables
Confidential and Proprietary Information of ZTE CORPORATION 235
The End B3 corresponds to the No. 9~10 or No. 9~11 lines of E1 signals.
In the first group of cables, the End B3 uses the first two lines. In the second and third groups of cables, the End B3 uses the first three lines.
The 16-core micro-coaxial cable is used at the Ends B1, B2 and B3. Corresponding to the sending and the receiving of one line of E1 signal, each four lines of cores connect to the receiving end and the sending end of the opposite end.
Acting as the trunk cable of the SPB
The end A connects with the E1 interface (DB44 interface) of the RSPB. The RSPB has 2-group E1 interfaces connecting with 2-group cables. It can introduce totally 16 lines of E1 signal.
The first group of E1 cable introduces the No. 1~11 lines of E1 signal.
The second group of E1 cable introduces the No. 12~16 lines of E1 signal.
Each group of cables introduces at most 11 lines of E1 signal.
The End B1 corresponds to the No. 1~4 lines of E1 signal.
The End B2 corresponds to the No. 5~8 lines of E1 signal.
The End B3 corresponds to the No. 9~11 lines of E1 signal.
The second group of E1 cables uses the Ends B1 and B2, and the end B2 uses the first line of E1 signal.
The 16-core micro-coaxial cable is used at the Ends B1, B2 and B3. Corresponding to the sending and the receiving of one line of E1 signal, each four lines of cores connect to the receiving end and the sending end of the opposite end.
Table 129 shows the corresponding relation between the pins at the end A and the cores at the end B.
T AB L E 129 CO R R E S P O N D I N G R E L AT I O N B E T W E E N T H E P I N S AT T H E E N D A AN D T H E C O R E S AT T H E E N D B
Signal Name
Pin Number at the End A
Color Spectrum
End B Core Sequence at the End B
E1_TX0+ 36
E1_TX0- 35
Blue (Red 1)
Blue (Black 1)
1 (OUT0)
E1_RX0+ 34
E1_RX0- 33
Pink (Red 1)
Pink (Black 1)
2 (IN0)
E1_TX1+ 17
E1_TX1- 18
Green (Red 1)
Green (Black 1)
3 (OUT1)
E1_RX1+ 31 Yellow (Red 1)
B1
4 (IN1)
Relationship between Pins
and Cores
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Signal Name
Pin Number at the End A
Color Spectrum
End B Core Sequence at the End B
E1_RX1- 32 Yellow (Black 1)
E1_TX2+ 16
E1_TX2- 1
Grey (Red 1)
Grey (Black 1)
5 (OUT2)
E1_RX2+ 2
E1_RX2- 3
Blue (Red 2)
Blue (Black 2)
6 (IN2)
E1_TX3+ 21
E1_TX3- 22
Pink (Red 2)
Pink (Black 2)
7 (OUT3)
E1_RX3+ 6
E1_RX3- 7
Green (Red 2)
Green (Black 2)
8 (IN3)
E1_TX4+ 19
E1_TX4- 20
Blue (Red 1)
Blue (Black 1)
9 (OUT4)
E1_RX4+ 4
E1_RX4- 5
Pink (Red 1)
Pink (Black 1)
10 (IN4)
E1_TX5+ 25
E1_TX5- 26
Green (Red 1)
Green (Black 1)
11 (OUT5)
E1_RX5+ 10
E1_RX5- 11
Yellow (Red 1)
Yellow (Black 1)
12 (IN5)
E1_TX6+ 8
E1_TX6- 9
Grey (Red 1)
Grey (Black 1)
13 (OUT6)
E1_RX6+ 23
E1_RX6- 24
Blue (Red 2)
Blue (Black 2)
14 (IN6)
E1_TX7+ 12
E1_TX7- 13
Pink (Red 2)
Pink (Black 2)
15 (OUT7)
E1_RX7+ 27
E1_RX7- 28
Green (Red 2)
Green (Black 2)
B2
16 (IN7)
E1_TX8+ 43
E1_TX8- 44
Blue (Red 1)
Blue (Black 1)
17 (OUT8)
E1_RX8+ 42
E1_RX8- 41
Pink (Red 1)
Pink (Black 1)
18 (IN8)
E1_TX9+ 14
E1_TX9- 15
Green (Red 1)
Green (Black 1)
19 (OUT9)
E1_RX9+ 29
E1_RX9- 30
Yellow (Red 1)
Yellow (Black 1)
20 (IN9)
E1_TX10+ 40
E1_TX10- 39
Grey (Red 1)
Grey (Black 1)
B3
21 (OUT10)
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Signal Name
Pin Number at the End A
Color Spectrum
End B Core Sequence at the End B
E1_RX10+ 38
E1_RX10- 37
Blue (Red 2)
Blue (Black 2)
22 (IN10)
The cable adopts the 3×16-core 120 Ω PCM cable.
Each trunk cable can provide 11-group E1 access.
120 Ω E1 Trunk Cable (11×4-Core)
The common 120 Ω trunk cable used by DTB, DTEC and SPB boards implements balanced access of the external E1. It is not used at present, because it has many outgoing lines.
Figure 140 shows the structure of the 120 Ω trunk cable.
F I G U R E 140 S T R U C T U R E D I AG R AM O F 120 Ω TR U N K CAB L E (11×4-CO R E ) La
bel
Acting as the trunk cable of DTB/DTEC
The End A connects with the E1 interface (DB44 interface) of the RDTB. The RSPB has three groups of E1 interfaces connecting with three groups of cables, totally introducing 32 lines of E1 signal.
The first group of E1 cable introduces the No. 1~11 lines of E1 signal.
The second group of E1 cable introduces the No. 11~21 lines of E1 signal.
The third group of E1 cable introduces the No. 22~32 lines of E1 signal.
Each group of cables introduces at most 11 lines of E1 signal. Ends B11~B11 correspond to a line of E1 sequentially. In the first group of cables, the last line of the E1 is not used.
The 4-core micro-coaxial cable is used at the ends B1, B2 and B3. Corresponding to the sending and the receiving of
Technical Indices
Functions
Schematic Diagram
Cable Connection
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238 Confidential and Proprietary Information of ZTE CORPORATION
one line of E1 signal, each four lines of cores connect to the receiving end and the sending end of the opposite end.
Acting as the trunk cable of the SPB
The end A connects with the E1 interface (DB44 interface) of the RSPB. The RSPB has 2-group E1 interfaces connecting with 2-group cables. It can introduce totally 16 lines of E1 signal.
The first group of E1 cables introduces the No. 1~11 lines of E1 signal.
The second group of E1 cables introduces the No. 12~16 lines of E1 signal.
The ends B1~B11 correspond to one line of E1 respectively according to sequence. Only the ends B1~B5 are used in the second group of cables.
The 4-core micro-coaxial cable is used at the ends B1, B2 and B3. Corresponding to the sending and the receiving of one line of E1 signal, each four lines of cores connect to the receiving end and the sending end of the opposite end.
Table 130 shows the corresponding relation between the pins at the end A and the cores at the end B.
T AB L E 130 CO R R E S P O N D I N G R E L AT I O N B E T W E E N T H E P I N S AT T H E E N D A AN D T H E C O R E S AT T H E E N D B
Signal Name
Pin Number at the End A
Color Spectrum
End B Core Sequence at the End B
E1_TX0+ 36
E1_TX0- 35
Blue (red)
Blue (black) 1 (OUT0)
E1_RX0+ 34
E1_RX0- 33
Pink (red)
Pink (black)
B1
2 (IN0)
E1_TX1+ 17
E1_TX1- 18
Blue (red)
Blue (black) 3 (OUT1)
E1_RX1+ 31
E1_RX1- 32
Pink (red)
Pink (black)
B2
4 (IN1)
E1_TX2+ 16
E1_TX2- 1
Blue (red)
Blue (black) 5 (OUT2)
E1_RX2+ 2
E1_RX2- 3
Pink (red)
Pink (black)
B3
6 (IN2)
E1_TX3+ 21
E1_TX3- 22
Blue (red)
Blue (black) 7 (OUT3)
E1_RX3+ 6
E1_RX3- 7
Pink (red)
Pink (black)
B4
8 (IN3)
Relationship between Pins
and Cores
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Confidential and Proprietary Information of ZTE CORPORATION 239
Signal Name
Pin Number at the End A
Color Spectrum
End B Core Sequence at the End B
E1_TX4+ 19
E1_TX4- 20
Blue (red)
Blue (black) 9 (OUT4)
E1_RX4+ 4
E1_RX4- 5
Pink (red)
Pink (black)
B5
10 (IN4)
E1_TX5+ 25
E1_TX5- 26
Blue (red)
Blue (black) 11 (OUT5)
E1_RX5+ 10
E1_RX5- 11
Pink (red )
Pink (black)
B6
12 (IN5)
E1_TX6+ 8
E1_TX6- 9
Blue (red)
Blue (black) 13 (OUT6)
E1_RX6+ 23
E1_RX6- 24
Pink (red)
Pink (black)
B7
14 (IN6)
E1_TX7+ 12
E1_TX7- 13
Blue (red)
Blue (black) 15 (OUT7)
E1_RX7+ 27
E1_RX7- 28
Pink (red)
Pink (black)
B8
16 (IN7)
E1_TX8+ 43
E1_TX8- 44
Blue (red)
Blue (black) 17 (OUT8)
E1_RX8+ 42
E1_RX8- 41
Pink (red)
Pink (black)
B9
18 (IN8)
E1_TX9+ 14
E1_TX9- 15
Blue (red)
Blue (black) 19 (OUT9)
E1_RX9+ 29
E1_RX9- 30
Pink (red)
Pink (black)
B10
20 (IN9)
E1_TX10+ 40
E1_TX10- 39
Blue (red )
Blue (black) 21 (OUT10)
E1_RX10+ 38
E1_RX10- 37
Pink (red)
Pink (black)
B11
22 (IN10)
This cable adopts the 11×4-core 120 Ω PCM cable.
Each trunk cable can provide 11-group E1 access.
Technical Indices
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100 Ω T1 Trunk Cable (50-Core)
The common 100 Ω trunk cable used by DTB, DTEC and SPB boards implements balanced access of the external T1.
Figure 141 shows the structure of the 100 Ω trunk cable.
F I G U R E 141 S T R U C T U R E D I AG R AM O F 100 Ω TR U N K CAB L E
Direction C
C
Label
End A
End B
Acting as the trunk cable of DTB/DTEC
The End A connects with the T1 interface (DB44 interface) of the RDTB. The RDTB has three groups of T1 interfaces connecting with three groups of cables, totally introducing 32 lines of T1 signal.
The first group of T1 cable introduces the No. 1~10 lines of T1 signals.
The second group of T1 cable introduces the No. 11~21 lines of T1 signals.
The third group of T1 cable introduces the No. 22~32 lines of T1 signals.
Each group of cables introduces at most 11 lines of T1 signals (the End B of the first group of T1 cables does not use the last line of T1 signal).
The 50-core micro coaxial cable is used at the End B. Corresponding to the sending and the receiving of one line of T1 signal, each four lines of cores connect to the receiving end and the sending end of the opposite end.
Acting as the trunk cable of the SPB
The end A connects to the T1 interface (DB44 interface) of the RSPB. The RSPB has 2-group T1 interfaces connecting with 2-group cables. It can introduce totally 16 lines of T1 signal.
The first group of T1 cables introduces the No. 1~11 lines of T1 signal.
The second group of T1 cables introduces the No. 12~16 lines of T1 signal.
Functions
Schematic Diagram
Cable Connection
Chapter 6 MGW Outer Cables
Confidential and Proprietary Information of ZTE CORPORATION 241
Each group of cables introduces at most 11 lines of T1 signal (the end B of the second group of T1 cables only uses the first 5 lines of T1 signal).
The 50-core shield network cable is used at the end B. Corresponding to the sending and the receiving of one line of T1 signal, each four lines of cores connect to the receiving end and the sending end of the opposite end.
Table 131 shows the corresponding relation between the pins at the end A and the cores at the end B.
T AB L E 131 CO R R E S P O N D I N G R E L AT I O N B E T W E E N T H E P I N S AT T H E E N D A AN D T H E C O R E S AT T H E E N D B
Signal Name
End A Color Spectrum Core Sequence at
the End B
E1_TX0+ 36
E1_TX0- 35
White
Orange
1 (OUT0)
E1_RX0+ 34
E1_RX0- 33
White
Blue
2 (IN0)
E1_TX1+ 17
E1_TX1- 18
White
Brown
3 (OUT1)
E1_RX1+ 31
E1_RX1- 32
White
Green
Red strip
4 (IN1)
E1_TX2+ 16
E1_TX2- 1
White
Orange
5 (OUT2)
E1_RX2+ 2
E1_RX2- 3
White
Blue
6 (IN2)
E1_TX3+ 21
E1_TX3- 22
White
Brown
7 (OUT3)
E1_RX3+ 6
E1_RX3- 7
White
Green
Yellow strip
8 (IN3)
E1_TX4+ 19
E1_TX4- 20
White
Orange
9 (OUT4)
E1_RX4+ 4
E1_RX4- 5
White
Blue
10 (IN4)
E1_TX5+ 25
E1_TX5- 26
White
Brown
11 (OUT5)
E1_RX5+ 10
E1_RX5- 11
White
Green
Blue strip
12 (IN5)
E1_TX6+ 8
E1_TX6- 9
White
Orange
Purple strip
13 (OUT6)
Relationship between Pins
and Cores
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Signal Name
End A Color Spectrum Core Sequence at
the End B
E1_RX6+ 23
E1_RX6- 24
White
Blue
14 (IN6)
E1_TX7+ 12
E1_TX7- 13
White
Brown
15 (OUT7)
E1_RX7+ 27
E1_RX7- 28
White
Green
16 (IN7)
E1_TX8+ 43
E1_TX8- 44
White
Orange
17 (OUT8)
E1_RX8+ 42
E1_RX8- 41
White
Blue
18 (IN8)
E1_TX9+ 14
E1_TX9- 15
White
Brown
19 (OUT9)
E1_RX9+ 29
E1_RX9- 30
White
Green
White strip
20 (IN9)
E1_TX10+ 40
E1_TX10- 39
White
Orange
21 (OUT10)
E1_RX10+ 38
E1_RX10- 37
White
Blue
Black strip
22 (IN10)
This cable adopts 50-core UTP CAT5 cable.
Each trunk cable can provide 11-group T1 access.
100 Ω T1 Trunk Cable (6×8-Core)
The common 100 Ω trunk cable of the DTB/DTEC/SPB board implements balanced access of the external T1.
Figure 142 shows the structure of the 100 Ω trunk cable.
F I G U R E 142 S T R U C T U R E D I AG R AM O F 100 Ω TR U N K CAB L E
Label
Technical Indices
Functions
Schematic Diagram
Chapter 6 MGW Outer Cables
Confidential and Proprietary Information of ZTE CORPORATION 243
Acting as the trunk cable of DTB/DTEC
The End A connects with the T1 interface (DB44 interface) of the RDTB. The RDTB has three groups of T1 interfaces connecting with three groups of cables, totally introducing 32 lines of T1 signal.
The first group of T1 cable introduces the No. 1~10 lines of T1 signal.
The second group of T1 cable introduces the No. 11~21 lines of T1 signal.
The third group of T1 cable introduces the No. 22~32 lines of T1 signals.
Each group of cables introduces at most 11 lines of T1 signal.
The End B1 corresponds to the first and the second lines of T1 signal;
The End B2 corresponds to the third and fourth lines of T1 signals.
The End B3 corresponds to the fifth and sixth lines of T1 signals.
The end B4 corresponds to the seventh and the eighth lines of T1 signal;
The End B5 corresponds to the ninth and the tenth lines of T1 signals.
The End B6 corresponds to the eleventh line of T1 signal.
The End B6 of the first group of cables is not used.
The 8-core shield network cable is used at the end B. Corresponding to the sending and the receiving of one line of T1 signal, each four lines of cores connect to the receiving end and the sending end of the opposite end.
Acting as the trunk cable of the SPB
The end A connects with the T1 interface (DB44 interface) of the RSPB. Having 2-group T1 interfaces connecting with 2-group cables, the RSPB can introduce totally 16 lines of T1 signal.
The first group of T1 cables introduces the No. 1~11 lines of T1 signal.
The second group of T1 cables introduces the No. 12~16 lines of T1 signal.
Each group of cables introduces at most 11 lines of T1 signal.
End B1 corresponds to the first and the second lines of T1 signal.
End B2 corresponds to the third and the fourth lines T1 signals.
End B3 corresponds to the fifth and the sixth lines of T1 signal.
Cable Connection
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End B4 corresponds to the seventh and the eighth lines of T1 signal.
End B5 corresponds to the ninth and the tenth lines of T1 signal.
End B6 corresponds to the eleventh line of T1 signal.
The end B (B1, B2 and B3) of the second group of T1 cables only uses the first 5 lines of T1 signal, and the end B3 only uses the first line of T1 signal.
The 8-core shield network cable is used at the end B. Corresponding to the sending and the receiving of one line of T1 signal, each four lines of cores connect to the receiving end and the sending end of the opposite end.
Table 132 shows the corresponding relation between the pins at the end A and the cores at the end B.
T AB L E 132 CO R R E S P O N D I N G R E L AT I O N B E T W E E N T H E P I N S AT T H E E N D A AN D T H E C O R E S AT T H E E N D B
Signal Name
Pin Number at the End A
Color Spectrum
End B Core Sequence at the End B
E1_TX0+ 36
E1_TX0- 35
White-orange
Orange
1 (OUT0)
E1_RX0+ 34
E1_RX0- 33
White-blue
Blue
2 (IN0)
E1_TX1+ 17
E1_TX1- 18
White-brown
Brown
3 (OUT1)
E1_RX1+ 31
E1_RX1- 32
White-green
Green
End B1
4 (IN1)
E1_TX2+ 16
E1_TX2- 1
White-orange
Orange
5 (OUT2)
E1_RX2+ 2
E1_RX2- 3
White-blue
Blue
6 (IN2)
E1_TX3+ 21
E1_TX3- 22
White-brown
Brown
7 (OUT3)
E1_RX3+ 6
E1_RX3- 7
White-green
Green
End B2
8 (IN3)
E1_TX4+ 19
E1_TX4- 20
White-orange
Orange
9 (OUT4)
E1_RX4+ 4
E1_RX4- 5
White-blue
Blue
10 (IN4)
E1_TX5+ 25 White-brown
End B3
11 (OUT5)
Relationship between Pins
and Cores
Chapter 6 MGW Outer Cables
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Signal Name
Pin Number at the End A
Color Spectrum
End B Core Sequence at the End B
E1_TX5- 26 Brown
E1_RX5+ 10
E1_RX5- 11
White-green
Green
12 (IN5)
E1_TX6+ 8
E1_TX6- 9
White-orange
Orange
13 (OUT6)
E1_RX6+ 23
E1_RX6- 24
White-blue
Blue
14 (IN6)
E1_TX7+ 12
E1_TX7- 13
White-brown
Brown
15 (OUT7)
E1_RX7+ 27
E1_RX7- 28
White-green
Green
End B4
16 (IN7)
E1_TX8+ 43
E1_TX8- 44
White-orange
Orange
17 (OUT8)
E1_RX8+ 42
E1_RX8- 41
White-blue
Blue
18 (IN8)
E1_TX9+ 14
E1_TX9- 15
White-brown
Brown
19 (OUT9)
E1_RX9+ 29
E1_RX9- 30
White-green
Green
End B5
20 (IN9)
E1_TX10+ 40
E1_TX10- 39
White-orange
Orange
21 (OUT10)
E1_RX10+ 38
E1_RX10- 37
White-blue
Blue
End B6
22 (IN10)
The cable adopts the 6×8-core UTP CAT5 cable.
Each trunk cable can provide 11-group T1 access.
OMC Ethernet Cable
The OMC Ethernet cable implements the connection from the operation and maintenance board OMP to the background.
Figure 143 shows the structure of the OMC Ethernet Cable. Cable end A is located at the silkscreen identifier “OMC2” on the panel of the rear board RMPB, while cable end B provides the standard RJ45 male interface externally.
Technical Indices
Function
Structure
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F I G U R E 143 S T R U C T U R E D I AG R AM O F OMC E T H E R N E T C AB L E
End A End B
Label Label
10 10
Signal transmits as 100M full-duplex Ethernet signal.
Inter-Cabinet PD485 Interconnection Cable
PD485 interconnection cables interconnect the power P RS485 signal between cabinets.
Figure 144 shows the schematic diagram of the PD485 interconnection cable.
F I G U R E 144 IN T E R -C AB I N E T RS485 I N T E R C O N N E C T I O N C AB L E
Cable end A is located physically at the silkscreen identifier “RS485” (bottom) of the interface board PWRDB that is in the power distribution shelf of the outlet cabinet.
Cable end B is located physically at the silkscreen identifier “RS485” (top) of the interface board PWRDB that is in the power distribution shelf of the inlet cabinet.
Signal transmits as half-duplex 485 signal.
The RS485 signal on the PWRD supports the bus mode in connecting multiple racks. According to the configuration principle of matching resistance terminals of the RS485 bus, for multi-rack connection, it is required to set the X8 jumper on the power monitoring board PWRD based on the rack locations. Table 133 shows the configuration principle.
Signal
Functions
Schematic Diagram
Cable Connection
Technical Indices
Multiple Cabinet
Instructions
Chapter 6 MGW Outer Cables
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T AB L E 133 X8 C O N F I G U R AT I O N P R I N C I P L E
Connection Mode for Pin X8 Concrete Definition
1-2
9-10
Serving as the rack at the end-point of the 485 bus
3-4
7-8
Serving as the rack at the mid-point of the 485 bus
Taking three racks for example, Figure 145 shows the detailed PD485 cable connection during multi-cabinet interconnection.
F I G U R E 145 PD485 C AB L E C O N N E C T I O N M O D E
IP Access Cable of Mc Interface
The IP access cable implements the IP access of the Mc interface.
Cable End A is located physically at the silkscreen identifier “FEn” (n=1~4) on the panel of the rear board RMNIC of the SIPI board.
Cable End B provides externally standard RJ45 male interface to the IP network of the MSCS system.
Signal transmits as 100M full-duplex Ethernet signal.
User Plane Interconnection Cables of Nb Interface
The access modes of user plane interconnection cables at the Nb interface are as follows.
Example
Functions
Connection Position
Signal
Access Modes
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TDM bearer cable, mainly adopting the DTB or DTEC board
TDM bearer fiber, mainly adopting the SDTB board
IP bearer cable, mainly adopting the IPI (FE) or IPI (GE electric) board
IP bearer fiber, mainly adopting the IPI (GE optical) board
IP-over-SDH fiber (POS access), mainly adopting the IPI (pos155M) and IPI (POS622M) boards.
Function
The SDTB board is usually used for the access of the Nb (TDM bearer), A, and Ai interfaces.
Cable Connection
One end of one fiber connects with “Tx” on the SDTB board, and the other end connects with the receiving end of the opposite end office.
One end of one fiber connects with “Rx” on the SDTB board, and the other end connects with the sending end of the opposite end office.
Technical Indices
The signal is the STM-1 optical signal.
Function
Currently, the IPI (FE) board is used for connecting the IP interconnection cable of the user plane to complete the access of the Nb interface when IP bearer is adopted.
Structure
The cable adopts the FTP super category-5 shielding data cable. Both ends of the cable are the 8P8C straight crimping shielding plugs.
Connection relation of both ends
Table 134 shows the connection relation of both ends.
T AB L E 134 CO N N E C T I O N RE L AT I O N O F B O T H E N D S
End A End B Signal Name Color Spectrum
1 3 Tx+ White-orange
2 6 Tx- Orange
3 1 Rx+ White-green
4 4 - Blue
5 5 - White-blue
6 2 Rx- Green
7 7 - White-brown
8 8 - Brown
TDM Bearer
IP Connection Cable
Chapter 6 MGW Outer Cables
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Plugging positions
The end A is physically located at the silkscreen identifier FEn (n=1~4) on the RMNIC rear board of the IPI (FE) board.
The end B provides externally Ethernet RJ45 male interface.
Function
The IPI (GE optical) boards can be connected with the IP interconnection fiber of the user plane to complete the access of the Nb interface when the IP bearer is adopted.
Cable connection
One end of one fiber connects with “Tx” on the IPI (GE optical) board of local end, and the other end connects with the receiving end of the switch or router.
One end of one fiber connects with “Rx” on the IPI (GE optical) board of local end, and the other end connects with the sending end of the switch or router.
Technical indices
The signal is the 1G optical signal.
Function
The IPI (POS155M) or IPI (POS622M) boards can be connected with the SDH interconnection fiber of the user plane to complete the access of the Nb interface when the IP-over-SDH is adopted.
Cable connection
One end of one fiber connects with “Tx” on the IPI (POS155M) or IPI (POS622M) board of local end, and the other end connects with the receiving end of the switch or router.
One end of one fiber connects with “Rx” on the IPI (POS155M) or IPI (POS622M) board of local end, and the other end connects with the sending end of the switch or router.
The quantity of 155M and 622M ports depends on the subscriber capacity.
Technical indices
The signal is the optical signal of the SDH (155M or 622M).
IP Connection Fiber of User
Plane
POS Interconnection Fiber of User
Plane
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A p p e n d i x A
Abbreviations
Abbreviations Full Name
A
ACK Acknowledgement
ACM Accumulated Call Meter
ACM Address Complete Message
AE Application Entity
APB ATM Process Board
AoC Advice of Charge
AoCC Advice of Charge Charging supplementary service
AoCI Advice of Charge Information supplementary service
ASE Application Service Element
ASIG Analog Signaling
AuC Authentication Centre
B
BAIC Barring of All Incoming Calls supplementary service
BAOC Barring of All Outgoing Calls supplementary service
BCCH Broadcast Control Channel
BCTL Back Control
BCSN Backplane of Circuit Switch Network
BDT Back Digital Trunk
BCTC Backplane of Control Center
BFBI Back Fiber Bus Interface
BHCA Busy hour Calling Attempt
BIC-Roam Barring of Incoming Calls when Roaming outside
the home PLMN country supplementary service
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Abbreviations Full Name
BNET Back Network
BO all Barring of Outgoing call supplementary services
BOIC Barring of Outgoing International Calls supplementary service
BOIC-exHC Barring of Outgoing International Calls except those directed to the home PLMN Country supplementary service
BPSN Backplane of Packet Switch Network
BS Basic Service (group)
BS Bearer Service
BSG Basic Service Group
BTS Base Transceiver Station
BUSN Backplane of Universal Switch Network
C
CAI Charge Advice Information
CB Cell Broadcast
CBC Cell Broadcast Centre
CBCH Cell Broadcast Channel
CBK Clear Back signal
CC Country Code
Call Control
CCF Conditional Call Forwarding
CCITT The International Telegraph and Telephone Consultative Committee
Cct Circuit
CF all Call Forwarding services
CFB Call Forwarding on mobile subscriber Busy supplementary service
CFNRc Call Forwarding on mobile subscriber Not Reachable supplementary service
CFNRy Call Forwarding on No Reply supplementary service
CFU Call Forwarding Unconditional supplementary service
CG Charging Gateway
CGC Circuit Group Congestion signal
CI Cell Identity
CUG Index
CLKG CLOCK Generator
Appendix A Abbreviations
Confidential and Proprietary Information of ZTE CORPORATION 253
Abbreviations Full Name
CLKI CLOCK Interface
CLI Calling Line Identity
CLIP Calling Line Identification Presentation supplementary service
CLIR Calling Line Identification Restriction supplementary service
CM Connection Management
CMD Command
CMP Control Main Processor
COLI Connected Line Identity
COLP Connected Line identification Presentation supplementary service
COLR Connected Line identification Restriction supplementary service
D
DTB Digital Trunk Board
G
COLP Connected Line identification Presentation supplementary service
GLI GE Line Interface
GERAN GSM Enhanced Radio Access Network
I
IMAB IMA Board
IPB IP Process Board
IPI IP bearer Interface
IWFB IWF Board
M
MNIC Multi-service Network Interface Card
MONB Monitor Board
MPB Main Process Board
MRB Media Resource Board
O
OMP Operation Main Processor
P
PLI POS Line Interface
PSN Packet Switch Network
PWRD POWER Distributor
S
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Abbreviations Full Name
SDHB SDH Board
SDTB Sonnet Digital Trunk Board
SDU Selection and Distribution Unit
SMP Signal Main Processor
SPB Signaling Process Board
T
TFI TDM Fiber Interface
TSNB TDM Switch Network Board
U
UIM Universal Interface Module
V
VTC Voice Trancoder Card
Confidential and Proprietary Information of ZTE CORPORATION 255
Glossary
3G refers to next generation of mobile communication systems. These offer enhanced services, such as multimedia and video. Main 3G technologies include UMTS and CDMA2000.
3GPP was formed in December 1998 as a collaboration agreement bringing together a number of telecommunication standards bodies. These standards bodies are referred to as Organizational Partners. Aim of 3GPP was to produce globally applicable technical specifications for third generation mobile systems based on evolved GSM Core Networks and the radio access technology Universal Terrestrial Radio Access (UTRAN).
3GPP2 is a sister project to 3GPP and is a collaboration agreement regarding third generation mobile networks. It is comprised of five Standards Development Organizations similar to Organizational Partners in 3GPP. 3GPP2 mainly deals with the following five areas: A-interface system, CDMA2000, American National Standards Institute-41 (ANSI-41), wireless packet data inter-working, and services & systems aspects.
An Access Point is a network device which provides the point of interconnection between wireless station (laptop computer, PDA) and wired network.
Bearer Service is a type of telecommunication service that provides the capability for transmission of signals between access points.
Broadband in radio systems identifies a type of communication channel capable of carrying a large portion of electromagnetic spectrum. It may also be applied to fixed communication systems when referring to bearers capable of carrying high volumes of traffic.
A client server application protocol using well known ports 20 and 21. It uses the services of Transmission Control Protocol (TCP) to provide reliability in the transfer of data files between network nodes. FTP was first defined as a standard in Request for Comments (RFC 959).
GE Ethernet (GE) is the Ethernet standard offering GE services and typically employs fibre. This technology has been used for backbone networks and desktops for high end servers and intensive graphical applications.
A Handoff, or Handover, is the process in which a cellular phone is handed from one cell to the next in order to maintain a radio connection with the network
3G
3GPP
3GPP2
Access Point
Bearer Service
Broadband
FTP
GE
Handoff or Handover
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International Mobile Equipment Identity is a unique identifier allocated to each Mobile Equipment (ME). It consists of a Type Approval Code (TAC), a Final Assembly Code, Serial Number (SNR) and a Spare Digit.
International Mobile Subscriber Identity is a unique identifier allocated to each mobile subscriber in a GSM and UMTS network. It consists of a Mobile Country Code (MCC), a Mobile Network Code (MNC) and a Mobile Station Identification Number (MSIN).
ISDN User Part is part of the SS7 protocol layer and used in setting up, management, and release of trunks that carry voice and data between calling and called parties.
This is the interface in UMTS which links the Radio Network Controller with MSC Server.
This is the interface in UMTS which links the RNC with MGW.
Location Area Identity uniquely identifies a Location Area (LA) within any Public Land Mobile Network (PLMN). It is comprised of the Mobile Country Code (MCC), Mobile Network Code (MNC) and the Location Area Code (LAC).
MAC address refers to hardware address and uniquely identifies a device within a defined network area.
Mobile Station ISDN (MSISDN) Number is the standard international telephone number used to identify a given subscriber. MSISDN is based on the International Telecommunications Union-Telecommunication Standardization Sector (ITU-T) E.164 standard.
Mobile Station Roaming Number is an E.164 defined telephone number used to route telephone calls in a mobile network from a Gateway Mobile Switching Centre (GMSC) to the target MSC.
Message Transfer Part forms part of the SS7 protocol stack and provides reliable routing usually within a network.
A set of procedures, software, equipment etc in order to keep a network operating in an efficient manner. ITU-T have developed a series of standards for Network Management which are referred to as the Telecommunication Management Network (TMN). This sub-divides Network Management into the following five categories; Fault, Configuration, Performance, Accounting and Security.
Node B is the function within the UMTS network that provides physical radio link between User Equipment (UE) and the network.
A physical channel supports physical media, usually in an encoded format. This may be pulses of light, a modulated voltage or radio waves.
Conceptual model of layered architecture of communication protocols in which, layers within a station are represented in hierarchical order. Each layer in the protocol stack is defined in generic terms describing functionality and mode of operation.
IMEI
IMSI
ISUP
Iu-CS
Iu-PS
LAI
MAC Address
MSISDN
MSRN
MTP
Network Management
Node B
Physical Channel
Protocol Stack
Glossary
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Performance of a communications channel or system is usually expressed in terms of Quality of Service (QoS). Depending upon the communication system, QoS may relate to service performance, Signal to Noise Ratio (SNR), Bit Error Ratio (BER), maximum and mean throughput rate, reliably, priority and other factors specific to each service.
Radio Access Network (RAN) performs the radio functionality of network, as well providing connection to Core Network. RAN typically includes a controller Radio Network Controller (RNC) in 3GPP and BSC in 3GPP2 and several transmitter/receivers Node B in 3GPP, BTS in 3GPP2.
Radio Access Network Application Part (RANAP) is used in a UMTS system on the Iu interface. It is responsible for function including setting up of a Radio Access Bearer (RAB) between the Core Network and RNC.
Signalling Connection Control Part is used to provide a means for the transfer of messages between any two signalling points in the same or different SS7 networks.
Streaming Control Transmission Protocol (SCTP) is a reliable transport protocol operating on top of IP. It provides acknowledged error free non duplicated transfer of data. STCP also detects data corruption, loss of data and duplication of data by using checksums and sequence numbers.
A Signaling Gateway is used to support the transport of signalling traffic received from one network and passed into another network.
In order to ensure subscriber identity confidentiality VLR and MGW may allocate Temporary Mobile Subscriber Identities (TMSI) to visiting mobile subscribers. VLR and MGW must be capable of correlating an allocated TMSI with IMSI of MS to which it is allocated. A MS may be allocated two TMSI, one for services provided through VLR, and the other known as the Packet TMSI (P-TMSI) services provided through the MGW.
Telephone User Part was an earlier implementation of SS7 that did not allow for data type applications, hence the introduction of ISDN User Part (ISUP).
A 3G mobile communications system which provides an enhanced range of multimedia services. UMTS will speed convergence between telecommunications, IT, media and content industries to deliver new services and create fresh revenue generating opportunities. UMTS will deliver low cost, high capacity mobile communications offering data rates as high as 2Mbps under stationary conditions with global roaming and other advanced capabilities. The specifications defining UMTS are formulated by 3GPP.
The identifier in ATM cell header that identifies to which virtual channel the cell belongs.
A standard designed to allow the content of Internet to be viewed on the screen of a mobile device such as mobile phones,
QoS
Radio Access Network
RANAP
SCCP
SCTP
Signaling Gateway
TMSI
TUP
UMTS
VCI
WAP
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258 Confidential and Proprietary Information of ZTE CORPORATION
personal organisers and pagers. WAP also overcomes the processing limitation of such devices. Information and services available are stripped down to their basic text format.
Confidential and Proprietary Information of ZTE CORPORATION 259
Figures
Figure 1 19-inch Standard MGW Cabinet ...............................2
Figure 2 Integrated Cabinet without Door .............................3
Figure 3 Partial Cabinet without Door ...................................4
Figure 4 Cabinet Structure ..................................................5
Figure 5 Optical Fiber Shelf .................................................7
Figure 6 Cabinet Rear Cabling .............................................7
Figure 7 Plane View ......................................................... 13
Figure 8 Structural View of Fan Shelf.................................. 15
Figure 9 Front View of the Service Shelf.............................. 16
Figure 10 Back View of the Service Shelf............................. 16
Figure 11 Sectional View of the Service Shelf....................... 17
Figure 12 Configuration Diagram ....................................... 19
Figure 13 Communications Relationship between Shelves...... 20
Figure 14 Layout of DIP Switches on Backplane ................... 20
Figure 15 Control Shelf Configuration ................................. 24
Figure 16 Control Shelf Principle ........................................ 24
Figure 17 BCTC Rear View ................................................ 26
Figure 18 Resource Shelf Configuration 1............................ 29
Figure 19 Resource Shelf Configuration 2............................ 29
Figure 20 Resource Shelf Configuration 3............................ 29
Figure 21 Resource Shelf Principles .................................... 30
Figure 22 BUSN Rear View................................................ 32
Figure 23 Single-Shelf Office with Pure TDM ........................ 35
Figure 24 Single-Shelf Office with TDM and IP Switching ....... 35
Figure 25 BGSN1............................................................. 36
Figure 26 BGSN2............................................................. 36
Figure 27 GE Switching Resource Shelf Principles ................. 37
Figure 28 BGSN Rear View................................................ 39
Figure 29 Level-1 Switching Shelf Configuration................... 40
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Figure 30 Principle of Level-1 Switching Shelf ...................... 41
Figure 31 BPSN Rear View ................................................ 42
Figure 32 Configuration of Circuit Switching Shelf ................ 44
Figure 33 Principle of the Circuit Switching Shelf .................. 45
Figure 34 Rear View Of BCSN............................................ 46
Figure 35 Busbar Structure ............................................... 47
Figure 36 Circuit Board Structure....................................... 53
Figure 37 Panel of the CLKG.............................................. 58
Figure 38 Layout of the CLKG Circuit Board ......................... 59
Figure 39 Panel Diagram of the RCKG1 and RCKG2 .............. 64
Figure 40 Schematic Diagram of CLKG................................ 65
Figure 41 Panel Diagram of MPx86 Board............................ 69
Figure 42 Layout Diagram of MPx86 Circuit Board ................ 70
Figure 43 Schematic Diagram of the MPx86 Board................ 74
Figure 44 Panel Diagram of the RMPB................................. 76
Figure 45 SIPI Outside View.............................................. 78
Figure 46 MNIC Board Panel (1) ........................................ 79
Figure 47 MNIC Board Panel (2) ........................................ 80
Figure 48 Schematic Diagram of MNIC Board....................... 83
Figure 49 RGER Panel Diagram.......................................... 85
Figure 50 Panel Diagram of the RMNIC ............................... 87
Figure 51 Panels of UIM, UIMU, and UIMT ........................... 89
Figure 52 UIM Layout....................................................... 90
Figure 53 UIM Board Working Principle ............................... 92
Figure 54 Panels of RUIM2 and RUIM3................................ 96
Figure 55 Panel of RUIM1 ................................................. 98
Figure 56 Front Panel Diagram of GUIM ............................ 100
Figure 57 Panel Diagram of GUIM1 and GUIM2 .................. 103
Figure 58 GUIM Board Working Principle ........................... 104
Figure 59 Panel Diagram of SPB Circuit Board.................... 106
Figure 60 Layout Diagram of SPB Circuit Board.................. 107
Figure 61 Panel Diagram of RSPB..................................... 110
Figure 62 Schematic Diagram of SPB Circuit Board............. 112
Figure 63 Panel Diagram of the APBE ............................... 114
Figure 64 Layout Diagram of APBE................................... 115
Figure 65 Panel Diagram of RGIM1................................... 118
Figures
Confidential and Proprietary Information of ZTE CORPORATION 261
Figure 66 Schematic Diagram of APBE .............................. 119
Figure 67 IWFB Panel..................................................... 121
Figure 68 IWFB Layout ................................................... 122
Figure 69 Schematic Diagram of IWFB.............................. 124
Figure 70 MRB Panel ...................................................... 127
Figure 71 MRB Working Principles .................................... 129
Figure 72 VTCD Panel..................................................... 133
Figure 73 VTCD Layout................................................... 134
Figure 74 VTCD Working Principles................................... 136
Figure 75 Panels of the PSN4V/PSN8V .............................. 138
Figure 76 Schematic Diagram of the PSN4V/PSN8V ............ 140
Figure 77 Panel Diagram of GLI Module ............................ 143
Figure 78 Layout Diagram of GLIQV Module ...................... 144
Figure 79 Schematic Diagram of the GLIQV....................... 146
Figure 80 DTB Panel ...................................................... 148
Figure 81 DTB Layout..................................................... 149
Figure 82 RDTB Panel..................................................... 152
Figure 83 DTB Working Principle ...................................... 154
Figure 84 DTEC Panel..................................................... 156
Figure 85 DTEC Layout................................................... 157
Figure 86 RDTB Panel..................................................... 160
Figure 87 DTEC Working Principle .................................... 162
Figure 88 Panel Diagram of CHUB .................................... 164
Figure 89 Layout Diagram of CHUB .................................. 165
Figure 90 Panel Diagram of RCHB1 and RCHB2 .................. 167
Figure 91 Schematic Diagram of CHUB ............................. 168
Figure 92 TSNB Panel..................................................... 170
Figure 93 TSNB Layout................................................... 171
Figure 94 TSNB Working Principles................................... 173
Figure 95 ETSN Panel..................................................... 175
Figure 96 ETSN Layout ................................................... 176
Figure 97 ETSN Working Principles ................................... 178
Figure 98 STSN Panel..................................................... 180
Figure 99 STSN Layout................................................... 181
Figure 100 STSN Working Principles ................................. 183
Figure 101 TFI Panel ...................................................... 185
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Figure 102 TFI Board Working Principles ........................... 187
Figure 103 SDTB Panel................................................... 189
Figure 104 SDTB Layout ................................................. 190
Figure 105 RGIM1 Panel ................................................. 193
Figure 106 SDTB Board Working Principles ........................ 194
Figure 107 Layout Diagram of PWRD Board....................... 196
Figure 108 Schematic Diagram of PWRD........................... 198
Figure 109 PWRDB Board Layout ..................................... 200
Figure 110 Integrated Alarm box panel............................. 201
Figure 111 Integrated Alarm Box Principles ....................... 204
Figure 112 Structure Diagram of System Clock Cable ......... 206
Figure 113 Structure Diagram of Line 8 K Clock Cable......... 207
Figure 114 Structure Diagram of Control Plane Tandem Cable................................................................................... 208
Figure 115 Structure Diagram of PD 485........................... 209
Figure 116 Structure Diagram of PD 485........................... 209
Figure 117 Overall Wire Connection of Cabinet Power ......... 211
Figure 118 -48V Power Cable .......................................... 212
Figure 119 Power Cable from Busbar to Shelf Filter (Cable 1)................................................................................... 212
Figure 120 Power Cable from Shelf Filter to Backplane (Cable 2)................................................................................... 213
Figure 121 Structure Diagram of Fan Shelf Power Cable ...... 214
Figure 122 Structure Diagram of Set-Top Fan Shelf Power Cable................................................................................... 214
Figure 123 Overall Wire Connection of Grounding Cable ...... 216
Figure 124 Cabinet-Door Grounding Cable......................... 217
Figure 125 Protective Grounding Transit Cable................... 217
Figure 126 Shelf Grounding Grid Cable ............................. 218
Figure 127 Interconnection Fiber for TDM Switching Network (Full Switching Capacity) ................................................. 219
Figure 128 Interconnect Fiber for Packet Switching Network (UIMT-GLI).................................................................... 220
Figure 129 Interconnect Fiber for Packet Switching Network (GUIM -GLI) .................................................................. 221
Figure 130 Structure of Environment Monitoring Transit Cable................................................................................... 224
Figure 131 Hygrothermal Sensor Cable............................. 226
Figure 132 Smoke Sensor Cable ...................................... 227
Figures
Confidential and Proprietary Information of ZTE CORPORATION 263
Figure 133 Infrared Sensor Cable..................................... 228
Figure 134 Cable Structure of Access Control Sensor (Equipment Room) ......................................................... 229
Figure 135 Cable Structure of Access Control Sensor (Cabinet Door) ........................................................................... 229
Figure 136 -48 V Power Cable ......................................... 230
Figure 137 Cable between Cabinet Protective Ground and Equipment Room Ground................................................. 230
Figure 138 75 Ω Trunk Cable Structure Diagram ................ 231
Figure 139 Structure Diagram of 120 Ω Trunk Cable (3×16-Core)................................................................................... 234
Figure 140 Structure Diagram of 120 Ω Trunk Cable (11×4-Core)................................................................................... 237
Figure 141 Structure Diagram of 100 Ω Trunk Cable........... 240
Figure 142 Structure Diagram of 100 Ω Trunk Cable........... 242
Figure 143 Structure Diagram of OMC Ethernet Cable ......... 246
Figure 144 Inter-Cabinet RS485 Interconnection Cable ....... 246
Figure 145 PD485 Cable Connection Mode......................... 247
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Tables
Table 1 Chapter Summary ...................................................i
Table 2 Typographical Conventions ...................................... ii
Table 3 Mouse Operation Conventions .................................. ii
Table 4 Topics in Chapter 1.................................................1
Table 5 Cabinet Dimensions ................................................2
Table 6 Cabinet Composition ...............................................4
Table 7 Function of Each Part ..............................................6
Table 8 Labels in Cabinet Rear Cabling .................................8
Table 9 Operating Environment ...........................................8
Table 10 Dimensions..........................................................8
Table 11 Operating Requirements ........................................9
Table 12 Power Consumption ..............................................9
Table 13 Topics in Chapter 2 ............................................. 11
Table 14 Dimensions........................................................ 12
Table 15 Function of Each Part of the Power Distribution Shelf13
Table 16 Topics in Service Shelf Section ............................. 15
Table 17 Function of Each Part of the Service Shelf .............. 17
Table 18 Functions of Each Shelf........................................ 18
Table 19 Corresponding Relationship between Shelf & Backplane..................................................................................... 19
Table 20 Office Number DIP Switch Signal Definition ............ 21
Table 21 Cabinet Number DIP Switch Signal Definition.......... 21
Table 22 Shelf Number DIP Switch Signal Definition ............. 21
Table 23 Topics in Control Shelf Section.............................. 22
Table 24 Board Configuration on the Control Shelf................ 22
Table 25 External Interface of the Control Shelf ................... 26
Table 26 Topics in Resource Shelf Section ........................... 26
Table 27 Board Configuration on the Resource Shelf ............. 27
Table 28 External Interfaces of the Resource Shelf ............... 32
Table 29 Topics in GE Switching Resource Shelf Section ........ 32
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Table 30 Board Configuration on Resource Shelf .................. 33
Table 31 External Interfaces of the Resource Shelf ............... 39
Table 32 Topics in Level-1 Switching Shelf Section ............... 39
Table 33 Board Configuration of Level-1 Switching Shelf ....... 40
Table 34 External Interface............................................... 42
Table 35 Topics in Circuit Switching Shelf Section ................ 43
Table 36 Board Configuration on Circuit Switching Shelf........ 43
Table 37 External Interfaces Of Circuit Switching Shelf ......... 46
Table 38 Topics in Chapter 3 ............................................. 49
Table 39 Labels in Module Structure................................... 53
Table 40 Circuit Boards with Their Abbreviations .................. 54
Table 41 Board Components ............................................. 54
Table 42 Topics in Clock Generator Board (CLKG) Section ..... 57
Table 43 Indicators of CLKG Board..................................... 59
Table 44 Buttons on CLKG Board ....................................... 62
Table 45 Interfaces on RCKG1 and RCKG2 .......................... 65
Table 46 Topics in Main Processing Board (MPx86) Section .... 67
Table 47 Indicators on the MPx86 Board ............................. 70
Table 48 Panel Buttons on MPx86 Board ............................. 73
Table 49 Topics in Multi-Function Network Interface Board (MNIC) Section ................................................................ 77
Table 50 Indicators on MNIC Panel..................................... 81
Table 51 Buttons on MNIC Module ..................................... 82
Table 52 Topics in Universal Interface Module Board (UIM) Section ........................................................................... 88
Table 53 Indicators of UIM board ....................................... 90
Table 54 Buttons in UIM board .......................................... 92
Table 55 Topics in GE Universal Interface Module Board (GUIM) Section ........................................................................... 99
Table 56 Indicators of GUIM board................................... 100
Table 57 Buttons in GUIM board ...................................... 102
Table 58 Topics in Signaling Processing Board (SPB) Section 105
Table 59 Indicators on SPB Board .................................... 107
Table 60 Buttons on SPB Module...................................... 108
Table 61 Connection Mode of Pins X9~X16........................ 111
Table 62 Topics in ATM Process Board (APBE) Section......... 113
Table 63 APBE Panel Indicators ....................................... 115
Tables
Confidential and Proprietary Information of ZTE CORPORATION 267
Table 64 Buttons on the APBE Module .............................. 117
Table 65 Topics in Inter-Working Function Board (IWFB) Section................................................................................... 120
Table 66 Indicators on IWFB Board .................................. 122
Table 67 Buttons on IWFB Module.................................... 123
Table 68 Topics in Media Resource Board (MRB) Section ..... 126
Table 69 Indicators on MRB Panel .................................... 128
Table 70 Buttons on MRB Module..................................... 129
Table 71 Topics in Voice Transcoder Card (VTCD) Section.... 132
Table 72 Indicators on MRB Panel .................................... 134
Table 73 Buttons on VTCD Module ................................... 135
Table 74 Topics in IP Packet Switching Network Board (PSN4V/PSN8V) Section .................................................. 137
Table 75 Indicators on the PSN4V/PSN8V Panel ................. 139
Table 76 Buttons on the PSN4V/PSN8V Module .................. 140
Table 77 Topics in 2.5G Line Interface Board (GLIQV) Section................................................................................... 142
Table 78 GLIQV Panel Indicators...................................... 144
Table 79 Buttons on the GLIQV Module............................. 146
Table 80 Topics in Digital Trunk Board (DTB) Section.......... 147
Table 81 Indicators on DTB Panel..................................... 149
Table 82 Button on DTB Module....................................... 151
Table 83 Connection Mode of X9-X16 Jumpers................... 153
Table 84 Topics in Digital Trunk Board with EC Function (DTEC) Section ......................................................................... 155
Table 85 Indicators on DTEC Panel................................... 157
Table 86 Button on DTB Module....................................... 159
Table 87 Connection Mode of X9-X16 Jumpers................... 161
Table 88 Topics in Control Plane Interconnection Board (CHUB) Section ......................................................................... 163
Table 89 Indicators on CHUB Module ................................ 165
Table 90 Buttons on CHUB Module ................................... 166
Table 91 Topics in TDM Switch Network Board (TSNB) Section................................................................................... 169
Table 92 Indicators on TSNB Panel................................... 171
Table 93 Buttons on TSNB Module ................................... 172
Table 94 Topics in Enhanced TDM Switch Network Board (ETSN) Section ......................................................................... 174
Table 95 Indicators on ETSN Panel ................................... 176
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268 Confidential and Proprietary Information of ZTE CORPORATION
Table 96 Buttons on ETSN Module.................................... 177
Table 97 Topics in Advanced TDM Switch Network Board (STSN) Section ......................................................................... 179
Table 98 Indicators on STSN Panel................................... 181
Table 99 Buttons on STSN Module ................................... 182
Table 100 Topics in TDM Fiber Interface (TFI) Section......... 184
Table 101 Indicators on TFI Panel .................................... 185
Table 102 Buttons on TFI Module..................................... 187
Table 103 Topics in SONET Digital Trunk Board (SDTB) Section................................................................................... 188
Table 104 Indicators on SDTB Panel ................................. 190
Table 105 Buttons on SDTB Module.................................. 191
Table 106 Topics in Power Distribution Board (PWRD) Section................................................................................... 196
Table 107 Indicators on the PWRD Board .......................... 197
Table 108 Topics in Chapter 4 .......................................... 201
Table 109 Topics in Chapter 5 ......................................... 205
Table 110 -48V Power Cable ........................................... 212
Table 111 Power Cable from Busbar to Shelf Filter ............. 213
Table 112 Power Cable from Shelf Filter to Backplane ......... 213
Table 113 Fan Shelf Power Cable ..................................... 214
Table 114 Fan Shelf Power Cable ..................................... 215
Table 115 Fan Shelf Power Cable ..................................... 217
Table 116 Protective Grounding Transit Cable.................... 217
Table 117 Protective Grounding Tandem Cable .................. 218
Table 118 Topics in Chapter 5 ......................................... 223
Table 119 Corresponding Connection Relation.................... 224
Table 120 Technical Indices of Environment Monitoring Transit Cable............................................................................ 225
Table 121 Technical Indices of the Hygrothermal Sensor ..... 226
Table 122 Technical Indices of the Smoke Sensor .............. 227
Table 123 Technical Indices of the Infrared Sensor............. 228
Table 124 Technical Indices of the Access Control Sensor.... 229
Table 125 Technical Indices of -48V Power Cable ............... 230
Table 126 Technical Indices of Cables between Cabinet Protective Ground and Equipment Room Ground ................. 230
Table 127 Corresponding Relationship between Pins of Port A and Core Wires of End B1 ................................................ 232
Tables
Confidential and Proprietary Information of ZTE CORPORATION 269
Table 128 Corresponding Relation between the Pins at the End A and the Cores at the End B2.......................................... 233
Table 129 Corresponding Relation between the Pins at the End A and the Cores at the End B ........................................... 235
Table 130 Corresponding Relation between the Pins at the End A and the Cores at the End B ........................................... 238
Table 131 Corresponding Relation between the Pins at the End A and the Cores at the End B ........................................... 241
Table 132 Corresponding Relation between the Pins at the End A and the Cores at the End B ........................................... 244
Table 133 X8 Configuration Principle ................................ 247
Table 134 Connection Relation of Both Ends ...................... 248
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Index
Active/standby...60, 70, 71, 82, 90, 101, 108, 116, 123, 128, 135, 139, 145, 150, 158, 165, 172, 177, 182, 186, 191
Alarm Alarm box .................... 201 current alarm................ 203
automatic speed adjustment.14 Backplane6, 11, 12, 15, 17, 19,
20, 22, 24, 25, 26, 27, 30, 31, 32, 33, 38, 39, 40, 41, 42, 43, 45, 83, 105, 125, 146, 168, 173, 174, 178, 179, 183, 184, 194, 200, 212, 213, 251, 252
Clock running mode catch .............................60 free .................... 3, 61, 257 trace .............................60
conference call....... 31, 38, 130 Congestion....................... 252 Control plane24, 25, 30, 37, 41,
91, 93, 94, 102, 103, 104, 112, 166, 168, 173, 178, 183, 208
DIP Switch .. 11, 15, 18, 20, 21, 54, 55, 56, 73, 82, 92, 102, 108, 109, 114, 117, 123, 126, 129, 135, 137, 140, 146, 151, 159, 163, 167, 173, 174, 178, 179, 183, 187, 188, 192, 196, 197, 198
Equipment commissioning process Handover ..................... 255
Filtering.............................17 FTP ............208, 209, 248, 255 Grounding..... 46, 63, 205, 215,
216, 217, 218 Instance ...................... 23, 40 jumper ..54, 55, 56, 59, 62, 63,
73, 82, 92, 102, 117, 123, 129, 135, 140, 146, 151, 159, 167, 173, 178, 183, 187, 192, 197, 198, 246
link ....113, 124, 141, 147, 153, 155, 161, 195, 256
Link
signaling link ................ 113 M3UA................................ 86 MAC address .................... 256 MAC configuration... 93, 94, 95,
105 mapping........ 30, 37, 194, 195 matching impedance ... 62, 151,
159 MP......... 73, 74, 119, 130, 187 MTP31, 38, 106, 112, 113, 119,
256 Network cable
Ethernet cable ...........6, 245 Office
Office number...... 18, 20, 21 Office configuration ........28, 29 PCM...111, 130, 131, 153, 161,
173, 178, 183, 237, 239 Phase
Phase-locked .............66, 67 Phase-locking ............... 194
Power consumption...............9 Power failure.................... 199 Power on ......................70, 81 Power supply ................... 199 Probe.............................. 226 RACK-ID.......................20, 21 rear boards 15, 16, 96, 98, 102,
167, 206, 207 Sensor
Access control sensor ... 200, 224, 228, 229
humidity sensor ............ 200 Infrared sensor223, 227, 228 Smoke sensor 200, 223, 224,
226, 227 Server
OMC server .................. 202 Shelf
Cabling shelf ....................6 Control shelf....6, 11, 15, 18,
19, 20, 22, 23, 24, 26, 41, 93, 208
Fan shelf4, 8, 11, 14, 15, 47, 209, 210, 213, 214, 215, 217
Service shelf 4, 6, 11, 15, 16, 17, 18, 20, 47, 212
SHELF-ID .....................20, 21
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272 Confidential and Proprietary Information of ZTE CORPORATION
Signal flow 125, 206, 207, 209, 210
Signaling
No.7 signaling.106, 112, 113 switchover ................... 66, 74