411-9001-132_18.06_BSC3000

Global System for Mobile Communications (GSM)

Nortel GSM BSC 3000/TCU3000 TroubleshootingRelease: V18.0 PC2Document Revision: 18.06

www.nortel.com

411-9001-132.

Global System for Mobile Communications (GSM)Release: V18.0 PC2Publication: 411-9001-132Document release date: 3 February 2010

Copyright © 2000-2009 Nortel Networks. All Rights Reserved.

While the information in this document is believed to be accurate and reliable, except as otherwise expresslyagreed to in writing NORTEL PROVIDES THIS DOCUMENT "AS IS" WITHOUT WARRANTY OR CONDITION OFANY KIND, EITHER EXPRESS OR IMPLIED. The information and/or products described in this document aresubject to change without notice.

Nortel, Nortel Networks, the Nortel logo, and the Globemark are trademarks of Nortel Networks.

All other trademarks are the property of their respective owners.

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3.

ContentsNew in this release 7Other changes 7Features 7

Introduction 9

Chapter 1 How to use this manual 111.1 Introduction 11

1.1.1 Corrective maintenance 111.1.2 Preventive maintenance 111.1.3 Intervention restrictions 121.1.4 RoHS compliancy 14

Chapter 2 Description of cabinets 172.1 Presentation 172.2 Description of the BSC 3000 cabinet 17

2.2.1 Description of frame assembly 172.2.2 Description of the SAI assembly 182.2.3 Description of Control Node shelf 202.2.4 Description of the Interface Node shelf 202.2.5 BSC 3000 slot numbering 242.2.6 PCM numbering (E1 configuration with Abis over IP) 312.2.7 PCM numbering (T1 configuration with Abis over IP) 342.2.8 Cross-references between BSC 3000 modules and maintenance

sheets 362.3 Description of TCU 3000 cabinet 37

2.3.1 Description of frame assembly 382.3.2 Description of the SAI assembly 382.3.3 Description of Transcoder Node shelf 402.3.4 Transcoder node slot numbering 432.3.5 Cross-references between TCU 3000 modules and maintenance

sheets 49

Chapter 3 Preventive maintenance procedures 513.1 Objective 513.2 Summary 51

Global System for Mobile Communications (GSM)Nortel GSM BSC 3000/TCU 3000 Troubleshooting

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3.3 Test description 523.3.1 Passive OMU Ethernet connection 523.3.2 Data consistency 533.3.3 Notifications check 533.3.4 Alarms check 543.3.5 Check traffic observation 543.3.6 Check BSC Power Supply 553.3.7 Check device state and status 563.3.8 Shared MMS disk scan 57

Chapter 4 Replacement procedures 614.1 Introduction 61

4.1.1 Presentation 614.1.2 Preliminary operations 614.1.3 Tools 64

4.2 Replacement procedures 644.2.1 Opening/Closing of doors 664.2.2 Extraction/Insertion of a module 684.2.3 Replacement of an OMU module 754.2.4 Replacement of a shared MMS module 794.2.5 Replacement of a private MMS module 844.2.6 Replacement of an ATM-SW module 904.2.7 Replacement of an ATM-RM 964.2.8 Replacement of a TRM 1024.2.9 Replacement of a TMU module 1074.2.10 Replacement of a CEM or CEM2 or CEM3 1114.2.11 Replacement of an 8K-RM 1184.2.12 Replacement of an IOM 1224.2.13 Replacement of an IGM 1294.2.14 Replacement of an IEM 1344.2.15 Replacement of a TIM 1404.2.16 Replacement of an RCM + Tx cable + Rx cable + CTU 1474.2.17 Replacement of a SIM 1584.2.18 Remove/Install the PCIU cover 1624.2.19 Replacement of the ALM card assembly 1654.2.20 Replacement of a FMU module 1704.2.21 Replacement of a FAN unit 1774.2.22 Replacement of an air filter 1814.2.23 Removal of a PCIU 1834.2.24 Installation of a PCIU 1834.2.25 Installing DS512 links for high switching capacity 1864.2.26 Removing DS512 links for high switching capacity 1924.2.27 Removing and replacing DS512 links for BSC high switching

capacity 195


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5

4.2.28 Replacement of a shelf backplane 201

Chapter 5 Advanced maintenance procedures 2055.1 Introduction 205

5.1.1 Presentation 2055.1.2 Preliminary operations 2055.1.3 Tools 205

5.2 Troubleshooting and repair procedures 2065.2.1 Halt procedure for BSC 3000 2065.2.2 Clock synchronization requirements for BSC 3000 and TCU 3000 2085.2.3 Detect the faulty IEM or the PCM link NOK and replace the faulty

module 209

FiguresFigure 1 Maintenance guide 13Figure 2 Stages of corrective maintenance 14Figure 3 BSC 3000 cabinet: front view 19Figure 4 BSC 3000 frame assembly (electrical configuration): front view 21Figure 5 BSC 3000 frame assembly (electrical configuration with Abis over

IP): front view 22Figure 6 BSC 3000 frame assembly (optical configuration): front view 23Figure 7 Logical slot numbering with E1 configuration of BSC 3000 cabinet

(electrical) 25Figure 8 Logical slot numbering with T1 configuration of BSC 3000 cabinet

(electrical) 27Figure 9 Logical slot numbering with E1 configuration of BSC 3000 cabinet

(optical) 29Figure 10 Logical slot numbering with T1 configuration of BSC 3000 cabinet

(optical) 31Figure 11 Logical slot numbering with E1 configuration of BSC 3000 cabinet

(electrical, IP-enabled) 33Figure 12 Logical slot numbering with T1 configuration of BSC 3000 cabinet

(electrical, IP-enabled) 35Figure 13 TCU 3000 cabinet: front view 39Figure 14 TCU 3000 frame assembly (electrical configuration): front view 41Figure 15 TCU 3000 frame assembly (optical configuration): front view 42Figure 16 Logical slot numbering with E1 (electrical) configuration of TCU

3000 cabinet 44Figure 17 Logical slot numbering with T1 (electrical) configuration of TCU

3000 cabinet 46Figure 18 Logical slot numbering with optical configuration of TCU 3000

cabinet (E1 and T1) 48Figure 19 Opening/Closing the doors 68Figure 20 Extraction of a module 73Figure 21 Insertion of a module 74Figure 22 OMU module: front panel 78Figure 23 MMS module: front panel 83Figure 24 MMS module: front panel 89Figure 25 ATM-SW module: front panel 94Figure 26 ATM-SW module: fiber-optic cable plug-in 95


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Figure 27 ATM-RM: front panel 101Figure 28 ATM-RM: fiber-optic cable plug-in 102Figure 29 TRM: front panel 106Figure 30 TMU module: front panel 110Figure 31 CEM or CEM2: front panel 117Figure 32 8K-RM: front panel 121Figure 33 IOM: front panel 127Figure 34 IOM: fiber-optic cable plug-in 128Figure 35 Interconnection between IPG-RC and HSA-RC 134Figure 36 IEM: front panel 139Figure 37 BSC 3000: TIM location 144Figure 38 TCU 3000: TIM location 145Figure 39 TIM: front panel 146Figure 40 BSC 3000: PCM cabling 152Figure 41 TCU 3000: PCM cabling 153Figure 42 LSA-RC: layout of the subassemblies 154Figure 43 LSA-RC: front panel 155Figure 44 CTU module: right side view 156Figure 45 CTU module: left side view 157Figure 46 SIM: front panel 161Figure 47 Remove/Install the PCIU cover 164Figure 48 PCIU: front view without cover 168Figure 49 ALM card: faceplate 169Figure 50 PCIU: front view 174Figure 51 Fan unit: front panel 175Figure 52 FMU: front view 176Figure 53 Fan unit: front panel 179Figure 54 Fan unit: insertion in the frame 180Figure 55 Location of the upper and lower air filters 182Figure 56 Connector distribution 185Figure 57 Power supply feeder arrival 186Figure 58 DS512 links are plugged in front of the BSC 3000 Interface Node 187Figure 59 DS512 links between the CEM and 8K-RM 189Figure 60 Fiber optic cable insertion 190Figure 61 DS512 cabling, final position 191Figure 62 Select CEM/8K-RM DS512 Link Test 192Figure 63 DS512 links between the CEM and 8K-RM 196Figure 64 Cut all tie wraps 197Figure 65 Gently pull the connector from the receptacle 198Figure 66 Select CEM/8K-RM DS512 Link Test 200Figure 67 Spectrum Peripheral Module Enhanced Double Height Shelf

Assembly 202Figure 68 TML user interface 207Figure 69 Confirmation window 208Figure 70 IEM status in OMC-R MMI description window 211


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7.

New in this releaseThe following sections detail what is new in Nortel GSM BSC 3000/TCU3000 Troubleshooting (411-9001-132) for release .

The following section describe what is new in this release for Nortel GSMBTS S8006 Troubleshooting (411-9001-132) for V18.0 P&C 2 release.

• “Features” (page 7)

Other changesSee the following section for information about changes that are notfeature-related:

• Miscellaneous technical corrections:

— Updated 4.2.13 “Replacement of an IGM” (page 129).

FeaturesThis document contains no feature updates in this release.


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8 New in this release


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9.

IntroductionThis document describes the preventive and corrective maintenanceprocedures that apply to the BSC 3000 and TCU 3000.

PrerequisitesThe readers must be familiar with the following technical documents:

• Nortel GSM BSS Documentation Roadmap (411-9001-000)

• Nortel GSM BSS Overview (411-9001-001)

• Nortel GSM BSS Fault Management—Maintenance Principles(411-9001-039)

• Nortel GSM BSC 3000/TCU 3000 Fundamentals (411-9001-126)

• Nortel GSM BSC 3000/TCU 3000 Fault Clearing (411-9001-131)

The documents listed are quoted in the document.

The following documents should apply to BSC 3000/TCU 3000:

• Nortel GSM BSS Fundamentals—Operating Principles (411-9001-007)

• Nortel GSM OMC-R Commands Reference—Objects and Fault Menus(411-9001-128)

• Nortel GSM OMC-R Commands Reference—Configuration,Performance, and Maintenance Menus (411-9001-129)

• Nortel GSM OMC-R Commands Reference—Security, Administration,SMS-CB, and Help Menus (411-9001-130)

Navigation• Chapter 1 “How to use this manual” (page 11) describes how to use

this maintenance manual.

• Chapter 2 “Description of cabinets” (page 17) provides a briefdescription of the BSC 3000 and TCU 3000.


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10 Introduction

• Chapter 3 “Preventive maintenance procedures” (page 51) provides aguide for maintenance personnel to perform preventive maintenanceto the BSC 3000 and TCU 3000.

• Chapter 4 “Replacement procedures” (page 61) provides a guide formaintenance personnel to replace product subassemblies.

• Chapter 5 “Advanced maintenance procedures” (page 205) providesa guide for maintenance personnel for the BSC 3000 and TCU 3000equipment.

Safety regulationsPersonnel safety and proper equipment operation

General personnel safety instructionsPersonnel must obey the safety instructions specific to the installation site:

• Rules concerning the premises (instructions posted on site or in thebuilding)

• Rules linked to the general personnel safety instructions

Those personnels working on the cabinet must be authorized according tothe security standards.

The cabinets external main power supply is switched off by opening thecircuit breaker on the operator’s box.

The cabinet is supplied by the main power supply. This means that beforedoing any work on the internal wiring of the cabinet, cut off its externalmain power supply.

Equipment safety instructions

DANGERUse caution when handling the power supply.Ensure that the power is turned off.

Never replace a power supply when it is energized.

CAUTIONESDS handling precautionsDuring every maintenance intervention, and especially whenhandling the boards, the operator must wear an anti-static wristband.


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11.

Chapter 1 How to use this manual

1.1 Introduction1.1.1 Corrective maintenance

Network maintenance is based on graphical supervision of the network.

Network maintenance is also based on the identification and replacementof faulty items of equipment, using the alarms and notifications describedin Nortel GSM BSS Fault Management—Maintenance Principles(411-9001-039).

This process is divided into three procedures:

• Items identifying the faulty items of equipment, using the informationgiven in Nortel GSM BSC 3000/TCU 3000 Fault Clearing(411-9001-131). See Figure 1 "Maintenance guide" (page 13).

• Locating the faulty items of equipment, using the information given inthis document. For more information, see Chapter 2 “Description ofcabinets” (page 17).

• Replacing the faulty items of equipment, using the replacementprocedures given in this document. For more information, see Chapter4 “Replacement procedures” (page 61) and Figure 2 "Stages ofcorrective maintenance" (page 14).

When a faulty item of equipment sends an alarm to the OMC-R, this alarmis accompanied by a fault number. Nortel GSM BSC 3000/TCU 3000 FaultClearing (411-9001-131) gives the procedures associated with the variousfault numbers.

1.1.2 Preventive maintenanceThe implementation of the preventive maintenance procedures is theresponsibility of each customer.

The preventive maintenance is used to periodically test the items ofequipment that do not directly trigger any alarm at the OMC-R.


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12 Chapter 1 How to use this manual

However, the execution of these procedures may trigger alarms at theOMC-R.

This process falls into two parts, as shown in Figure 1 "Maintenanceguide" (page 13):

• the replacement procedures of the faulty items of equipment

• the scheduled replacement procedures of the items of equipment thatare not tested

The procedures are described in this document.

1.1.3 Intervention restrictionsThere may be a lapse of time between an alarm at the OMC-R and whenthe operator responsible for intervention arrives at the site.

During the following scenarios, the operator must be synchronized with theOMC-R (by telephone) before any on-site intervention.

• isolating procedure

• intervention because alarms are triggered at the OMC-R

• completion of an on-site intervention

• return-to-service procedure


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1.1 Introduction 13

Figure 1Maintenance guide


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Figure 2Stages of corrective maintenance

1.1.4 RoHS compliancyRoHS compliant versions are available for the following components:

• ATM-RM

• MMS2

• CEM and CEM2

• CEM3

• SIM


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1.1 Introduction 15

• IOM

• IEM2

• TIM

• CC1

• OMU

• 8k-RM

• TMU2

• TMU3 with TMU2

• TRM2 and TRM3

• Control Node

• Nonintegrated OEMs

• External cables

• All the mechanical parts of the BSC 3000 and TCU 3000


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17.

Chapter 2 Description of cabinets

2.1 PresentationThis chapter gives a general description of the BSC 3000 and TCU 3000cabinets. For more information, see Nortel GSM BSC 3000/TCU 3000Fundamentals (411-9001-126).

This chapter also gives the slot numbering of the modules as known by theOMC-R; this allows you to locate a faulty module.

2.2 Description of the BSC 3000 cabinetThe BSC 3000 contains one indoor cabinet (no extension or externalcabinet).

The BSC 3000 also contains two optional hubs that are located outsidethe cabinet.

The BSC 3000 cabinet, as shown in Figure 3 "BSC 3000 cabinet: frontview" (page 19), contains the following subassemblies:

• one frame assembly (right side)

• one SAI (Service Area Interface) assembly (left side)

2.2.1 Description of frame assemblyThe frame assembly includes:

• one dual-shelf assembly dedicated to the Control Node, housed in theupper part of the frame assembly

• one dual-shelf assembly dedicated to the Interface Node, housed inthe lower part of the frame assembly

The frame assembly, as shown in Figure 3 "BSC 3000 cabinet: frontview" (page 19), contains the following elements:

— one lower grill assembly

— one air filter assembly

— one dual-shelf assembly including two shelves:


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18 Chapter 2 Description of cabinets

– Interface Node shelf 0 (lower part)

– Interface Node shelf 1 (upper part)

— one cooling unit (four fans units)

— one upper grill assembly


— one dual-shelf assembly including two shelves:

– Control Node shelf 0 (lower part)

– Control Node shelf 1 (upper part)


— One PCIU (Power Control Interface Unit) assembly which gathersalarms and distributes power supplies for both Interface Node andControl Node

2.2.2 Description of the SAI assemblyThe SAI assembly houses six CTUs (Cable Transition Units). Each CTUcontains seven CTMx boards (CTMP, CTMC, or CTMD boards). For moreinformation, see Figure 3 "BSC 3000 cabinet: front view" (page 19).


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2.2 Description of the BSC 3000 cabinet 19

Figure 3BSC 3000 cabinet: front view


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2.2.3 Description of Control Node shelfThe Control Node dual-shelf, as shown in Figure 4 "BSC 3000 frameassembly (electrical configuration): front view" (page 21). is located in theupper part of the BSC 3000 cabinet and contains the following modules:

• the OMU (Operation and Maintenance Unit) modules

• the TMU (Traffic Management Unit) modules

• four MMS (Mass Memory Storage) modules, configured as:

— two shared hard disks that mirror both OMU modules

— one private disk per OMU module (one for OMU-A and one forOMU-B)

• the ATM-SW (ATM SWitch) modules. The ATM-SW is also known asthe CC1, or Communication Controller 1.

• the SIMs (Shelf Interface Module)

• the filler modules

2.2.4 Description of the Interface Node shelfThe Interface Node dual-shelf, as shown in Figure 4 "BSC 3000 frameassembly (electrical configuration): front view" (page 21), is located in thelower part of the BSC 3000 cabinet and contains the following modules:

• the CEMs (Common Equipment Module)

— CEM (in the BSC electrical configuration)

— CEM2 (in the BSC optical configuration)

— CEM3 (in the BSC optical configuration)

• the ATM-RMs (ATM Resource Module)

• the LSA-RC (Low Speed Access Resource Complex) modules, eachcontaining:

— one TIM (Termination Interface Module)

— two IEMs (Interface Electronic Module)

• the HSA-RC (High Speed Access Resource Complex) modules (BSC3000 optical only), each containing:

— two IOMs (Interface Optical Module)

• The IPG (Internet Protocol Gateway) resource complex (IP-enabledBSC only), each containing

— two IGMs (IP Gateway Module)


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• the 8K-RMs (Circuit Switching Matrix Resource Module; BSC opticalonly)



Figure 4BSC 3000 frame assembly (electrical configuration): front view


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Figure 5BSC 3000 frame assembly (electrical configuration with Abis over IP): front view


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Figure 6BSC 3000 frame assembly (optical configuration): front view


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2.2.5 BSC 3000 slot numberingEach slot of the BSC 3000 cabinet is numbered toward the OMC-R. Onfailure, the OMC-R gives the logical slot number of the faulty module tothe operator. This allows the operator to locate this module. For moreinformation, see Figure 7 "Logical slot numbering with E1 configurationof BSC 3000 cabinet (electrical)" (page 25) or Figure 8 "Logical slotnumbering with T1 configuration of BSC 3000 cabinet (electrical)" (page27).

The hubs are located outside the cabinet.

2.2.5.1 PCM numbering (E1 configuration)A PCM port number is between 0 and 20 (logical numbering on theOMC-R); it is the number of a PCM channel among the 21 PCM channelsprocessed by one LSA (21 channels = 7 CTMx boards located in therelevant CTU × 3 channels per board).

A PCM number is between 0 and 125; it is the number of a PCM channelamong the 126 PCM channels processed by one cabinet (126 channels =6 CTUs per cabinet × 7 CTMx boards per CTU × 3 channels per board).

The combination ’PCM number’ - ’LSA’ is done during the commissioningphase, and it depends on the operator’s choice. Nevertheless, Nortelrecommends that you follow the next rule:

PCM number = LSA number × 21 + PCM port number

There are up to six LSAs, numbered from 0 to 5.

The PCM port number is between 0 and 20 (physical numbering on themodule).


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Figure 7Logical slot numbering with E1 configuration of BSC 3000 cabinet (electrical)

2.2.5.2 PCM numbering (T1 configuration)A PCM port number is between 0 and 27 (logical numbering at theOMC-R); it is the number of a PCM channel among the 28 PCM channelsprocessed by one LSA (28 channels = 7 CTMx boards located in therelevant CTU × 4 channels per board).


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A PCM number is between 0 and 167; it is the number of a PCM channelamong the 168 PCM channels processed by one cabinet (168 channels =6 CTUs per cabinet × 7 CTMx boards per CTU × 4 channels per board).

The combination ’PCM number’ - ’LSA’ is done during the commissioningphase, and it depends on the operator’s choice. Nevertheless, Nortelrecommends that you follow the next rule:


There are up to six LSAs, numbered from 0 to 5.



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Figure 8Logical slot numbering with T1 configuration of BSC 3000 cabinet (electrical)

2.2.5.3 PCM numbering (E1 + optical configuration)By design, the PCM numbering rules for a BSC configured with bothelectrical and optical carriers are similar to the rules used for a BSC thatonly supports the LSA-RC. In both cases, the same port on an LSA-RC inthe same position on the shelf receives the same PCM number in both


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the electrical and the optical configuration. PCM numbers for the HSA-RCare in a separate range of numbers that do not overlap numbers reservedfor the LSA-RC.

A PCM port number is between 0 and 20 (logical numbering on theOMC-R); it is the number of a PCM channel among the 21 PCM channelsprocessed by one LSA (21 channels = 7 CTMx boards located in therelevant CTU × 3 channels per board).

A Virtual port number is between 0 and 62 (logical numbering on theOMC-R); it is the number of a PCM channel among the 63 PCM channelsprocessed by one HSA.

A PCM number is between 0 and 104 or between 147 and 272; the formerrange is available for PCM channels on an LSA-RC. the latter is availablefor PCM channels on an HSA-RC.

The combination of PCM number and LSA or PCM number and HSA isdone during the commissioning phase, and it depends on the operator’schoice. Nevertheless, Nortel recommends that you follow these rules:

LsaRc PCM number = 21 × LsaRc number + PCM port number

Where:

• 0 ≤ LsaRC number ≤ 4 (only five LsaRC are allowed in thisconfiguration)

• 0 ≤ PCM port number ≤ 20

HsaRc PCM number = 147 + (63 × HsaRc number + virtualPortNumber)

Where:

• 0 ≤ HsaRc number ≤ 1

• 0 ≤ virtualPortNumber ≤ 62


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Figure 9Logical slot numbering with E1 configuration of BSC 3000 cabinet (optical)

2.2.5.4 PCM numbering (T1 + optical configuration)By design, the PCM numbering rules for a BSC configured with bothelectrical and optical carriers are similar to the rules used for a BSC thatonly supports the LSA-RC. In both cases, the same port on an LSA-RC inthe same position on the shelf receives the same PCM number in both


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the electrical and the optical configuration. PCM numbers for the HSA-RCare in a separate range of numbers that do not overlap numbers reservedfor the LSA-RC.


A Virtual port number is between 0 and 83 (logical numbering on theOMC-R); it is the number of a PCM channel among the 84 PCM channelsprocessed by one HSA.

A PCM number is between 0 and 139 or between 196 and 363; the formerrange is available for PCM channels on an LSA-RC. the latter is availablefor PCM channels on an HSA-RC.

The combination of PCM number and LSA or PCM number and HSA isdone during the commissioning phase, and it depends on the operator’schoice. Nevertheless, Nortel recommends that you follow these rules:

LsaRc PCM number = 28 × LsaRC number + PCM port number

Where:

• 0 ≤ LsaRC number ≤ 4 (only five LsaRC are allowed in thisconfiguration)


HsaRc PCM number = 196 + (84 × HsaRc number + virtualPortNumber)

Where:

• 0 ≤ HsaRc number ≤ 1



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Figure 10Logical slot numbering with T1 configuration of BSC 3000 cabinet (optical)

2.2.6 PCM numbering (E1 configuration with Abis over IP)The PCM numbering conventions used when the Abis interface isdeployed over an IP packet-switched network (Abis over IP) are anextension of the numbering used for the TDM-based configuration.

Only a BSC in the electrical configuration can use an IP-based Abisinterface.


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A Virtual port number is between 0 and 20 (logical numbering on theOMC-R.

A PCM number is between 0 and 104 for PCM channels on an LSA-RC.The IGM PCM fall into the range of 273–335.

The combination of PCM number and LSA or PCM number and IGM isdone during the commissioning phase, and it depends on the operator’schoice. Nevertheless, Nortel recommends that you use the following rules.

IP-enabled electrical configuration


Where:

• 0 ≤ LsaRC number ≤ 4 (only 5 LsaRC are allowed in this configuration)


IpgRc PCM number = 273 + virtualPortNumber

Where:



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Figure 11Logical slot numbering with E1 configuration of BSC 3000 cabinet (electrical, IP-enabled)


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2.2.7 PCM numbering (T1 configuration with Abis over IP)The PCM numbering conventions used when the Abis interface isdeployed over an IP packet-switched network (Abis over IP) are anextension of the numbering used for the TDM-based configuration.

Only a BSC in the electrical configuration can use an IP-based Abisinterface.


A Virtual port number is between 0 and 27 in the case of the IPG.

A PCM number is between 0 and 139 for PCM channels on an LSA-RC.The IGM PCM fall into the range of 364–447.

The combination of PCM number and LSA or PCM number and IGM isdone during the commissioning phase, and it depends on the operator’schoice. Nevertheless, Nortel recommends that you use the following rules.

IP-enabled electrical configuration


Where:

• 0 ≤ LsaRC number ≤ 4 (only 5 LsaRC are allowed in this configuration)


IpgRc PCM number = 364 + virtualPortNumber

Where:



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Figure 12Logical slot numbering with T1 configuration of BSC 3000 cabinet (electrical, IP-enabled)


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2.2.8 Cross-references between BSC 3000 modules and maintenancesheets

Table 1BSC 3000: location of maintenance sheets

Equipmenttype

Location Equipmentnumber

Replacementsheet

OMU moduleControl Node,Dual-shelf 01

Shelf 01

(05, 06) or (09,10)

4.2.3 “Replacement of an OMUmodule” (page 75)

MMS moduleControl Node,Dual-shelf 01

Shelf 00

(05, 06) or (09,10)

4.2.4 “Replacement of a sharedMMS module” (page 79)

ATM-SWmodule

Control Node,Dual-shelf 01

Shelf 0107 or 08

4.2.6 “Replacement of an ATM-SWmodule” (page 90)

ATM-RMInterface Node,Dual-shelf 00

Shelf 0105 or 06

4.2.7 “Replacement of an ATM-RM”(page 96)

TMU module

Control Node,Dual-shelf01 Shelf00 or 01

Shelf 00 (01, 03,04, 11, 12, 13,14) or Shelf 01(01, 03, 04, 11,

12, 13, 14)

4.2.9 “Replacement of a TMUmodule” (page 107)

CEMInterface Node,Dual-shelf 00

Shelf 0007 or 08

4.2.10 “Replacement of a CEM orCEM2 or CEM3” (page 111)

CEM3Interface Node,Dual-shelf 00

Shelf 0007 or 08

4.2.10 “Replacement of a CEM orCEM2 or CEM3” (page 111)

8K-RMInterface Node,Dual-shelf 00

Shelf 0009 or 10

4.2.11 “Replacement of an8K-RM” (page 118)

IGMInterface NodeDual-shelf 00

Shelf 00

Shelf 00 slot 01,02

4.2.13 “Replacement of anIGM” (page 129)

IGMInterface NodeDual-shelf 00

Shelf 00

Shelf 00 slot 01,02 (electrical);

Shelf 01 slot 09,10 (optical)

4.2.13 “Replacement of anIGM” (page 129)

IOMInterface NodeDual-shelf 00

Shelf 0001, 02, 09, or 10

4.2.12 “Replacement of anIOM” (page 122)


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2.3 Description of TCU 3000 cabinet 37

Table 1BSC 3000: location of maintenance sheets (cont’d.)

Equipmenttype


Replacementsheet

IEMInterface Node,Dual-shelf 00Shelf 00 or 01

Shelf 00 (01, 03,04, 06, 12, 14) orShelf 01 (02, 04,08, 10, 11, 13)

4.2.14 “Replacement of anIEM” (page 134)

TIMInterface Node,Dual-shelf 00Shelf 00 or 01

Shelf 00 (02, 05,13) or Shelf 01

(03, 09, 12)

4.2.15 “Replacement of a TIM”(page 140)

RCM + Tx cable+ Rx cable +

CTU

Interface Node,Dual-shelf 00Shelf 00 or 01

+ SAI

—4.2.16 “Replacement of an RCM+ Tx cable + Rx cable + CTU”

(page 147)

SIM

Control Node,Interface nodeDual-shelf 00or 01 Shelf 00

or 01

154.2.17 “Replacement of a SIM”

(page 158)

ALM card PCIU — 4.2.19 “Replacement of the ALMcard assembly” (page 165)

FMU module PCIU 1, 24.2.20 “Replacement of a FMU

module” (page 170)

Fan unitControl Node orInterface Node

1, 2, 3, 44.2.21 “Replacement of a FAN

unit” (page 177)

Air filterassembly

Control Node orInterface Node

—4.2.22 “Replacement of an air

filter” (page 181)

2.3 Description of TCU 3000 cabinetThe TCU 3000 cabinet, as shown in Figure 13 "TCU 3000 cabinet: frontview" (page 39), contains two Transcoder Nodes.

The TCU 3000 also contains the following subassemblies:

• one frame assembly (right side)

• one SAI (Service Area Interface) assembly (left side)


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2.3.1 Description of frame assemblyThe frame assembly consists of:

• one dual-shelf assembly dedicated to the Transcoder Node, housed inthe upper part of the frame assembly

• another dual-shelf assembly dedicated to the Transcoder Node,housed in the lower part of the frame assembly

The frame assembly contains the following elements, as shown inFigure 13 "TCU 3000 cabinet: front view" (page 39):

— one lower grill assembly


— one dual-shelf assembly, including two shelves:

– Transcoder Node shelf 0 (lower part)

– Transcoder Node shelf 1 (upper part)


— one upper grill assembly


— one dual-shelf assembly, including two shelves:

– Transcoder Node shelf 0 (lower part)

– Transcoder Node shelf 1 (upper part)


— one PCIU assembly that gathers alarms and distribute powersupplies for both transcoder dual-shelf assemblies

2.3.2 Description of the SAI assemblyThe SAI assembly houses eight CTUs (Cable Transition Unit). Each CTUcontains seven CTMx boards (CTMP, CTMC, or CTMD boards). For moreinformation, see Figure 13 "TCU 3000 cabinet: front view" (page 39).

In the optical configuration of the TCU 3000, the SAI is optional and canbe removed after an electrical TCU is upgraded to optical.


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Figure 13TCU 3000 cabinet: front view


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2.3.3 Description of Transcoder Node shelfEach of the two Transcoder Node dual-shelf assemblies contains thefollowing modules:

• the TRMs (Transcoder Resource Module)

• the CEMs (Common Equipment Module)

• the LSA-RC (Low Speed Access Resource Complex) modules, eachcontaining

— one TIM (Termination Interface Module)

— two IEMs (Interface Electronic Module)

• the HSA-RC (High Speed Access Resource Complex) modules, eachcontaining

— two IOMs (Interface Optical Module)



The following figures show the position of the modules within eachdual-shelf assembly.


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Figure 14TCU 3000 frame assembly (electrical configuration): front view


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Figure 15TCU 3000 frame assembly (optical configuration): front view


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2.3.4 Transcoder node slot numberingEach slot of the TCU 3000 cabinet is numbered for the OMC-R. Onfailure, the OMC-R gives the logical slot number of the faulty module tothe operator. This allows the operator to locate this module. For moreinformation, see Figure 16 "Logical slot numbering with E1 (electrical)configuration of TCU 3000 cabinet" (page 44) or Figure 17 "Logical slotnumbering with T1 (electrical) configuration of TCU 3000 cabinet" (page46).

2.3.4.1 PCM numbering (E1 electrical configuration)A PCM port number is between 0 and 20 (logical numbering at theOMC-R); it is the number of a PCM channel among the 21 PCM channelsprocessed by one LSA (21 channels = 7 CTMx boards located in therelevant CTU × 3 channels per board).

A PCM number is between 0 and 83; it is the number of a PCM channelamong the 84 PCM channels processed by one dual-shelf (84 channels =4 CTU per dual-shelf × 7 CTMx boards per CTU × 3 channels per board).

The combination of PCM number and LSA is set during the commissioningphase. It is carried out by an operator with the OMC-R. This combinationdepends on the operator’s choice. Nevertheless, it is advisable to followthe next rule:


There are up to four LSAs per dual-shelf, numbered from 0 to 3.



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Figure 16Logical slot numbering with E1 (electrical) configuration of TCU 3000 cabinet

2.3.4.2 PCM numbering (T1 electrical configuration)A PCM port number is between 0 and 27 (logical numbering at theOMC-R); it is the number of a PCM channel among the 28 PCM channelsprocessed by one LSA (28 channels = 7 CTMx boards located in therelevant CTU × 4 channels per board).


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A PCM number is between 0 and 111; it is the number of a PCM channelamong the 112 PCM channels processed by one dual-shelf (112 channels= 4 CTU per dual-shelf × 7 CTMx boards per CTU × 4 channels perboard).

The combination of PCM number and LSA is set during the commissioningphase. It is carried out by an operator with the OMC-R. This combinationdepends on the operator’s choice. Nevertheless, it is advisable to followthe next rule:


There are up to four LSAs per dual-shelf, numbered from 0 to 3.



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Figure 17Logical slot numbering with T1 (electrical) configuration of TCU 3000 cabinet

2.3.4.3 PCM numbering (E1 + optical configuration)A PCM port number is between 0 and 48 (logical numbering at theOMC-R); it is the number of a PCM channel among the 49 PCM channelsprocessed by one HSA.


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A PCM number is between 0 and 97; it is the number of a PCM channelamong the 98 PCM channels processed by one dual-shelf.

There are up to two HSA complexes in each dual-shelf, numbered from 0to 1.

The combination of PCM number and HSA is done during thecommissioning phase. It is carried out by an operator with the OMC-R.This combination depends on the operator’s choice. Nevertheless, it isadvisable to follow the next rule:

PCM number = HSA number × 49 + (62 - virtual port number)

Where:

• 0 ≤ HSA-RC number ≤ 1

• 14 ≤ virtual port number ≤ 62


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Figure 18Logical slot numbering with optical configuration of TCU 3000 cabinet (E1 and T1)

2.3.4.4 PCM numbering (T1 + optical configuration)A PCM port number is between 0 and 65 (logical numbering at theOMC-R); it is the number of a PCM channel among the 66 PCM channelsprocessed by one HSA.


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A PCM number is between 0 and 131; it is the number of a PCM channelamong the 132 PCM channels processed by one dual-shelf.

There are up to two HSA complexes in each dual-shelf, numbered from 0to 1.

The combination of PCM number and HSA is done during thecommissioning phase. It is carried out by an operator with the OMC-R.This combination depends on the operator’s choice. Nevertheless, it isadvisable to follow the next rule:

PCM number = HSA number × 66 + (83 – virtual port number)

Where:

• 0 ≤ HSA-RC number ≤ 1

• 18 ≤ virtual port number ≤ 83

For more information, see Figure 18 "Logical slot numbering with opticalconfiguration of TCU 3000 cabinet (E1 and T1)" (page 48)

2.3.5 Cross-references between TCU 3000 modules and maintenancesheets

Table 2TCU 3000: location of the maintenance sheets

Equipmenttype


Testsheet

Replacementsheet

TRM

Transcoder Node,Dual-shelf00 or 01

Shelf 00 or 01

Shelf 00(01, 02, 03,09, 10, 11,12, 13, 14)

orShelf 01 (05, 06,

14)

—4.2.8 “Replacement of

a TRM” (page 102)

CEM

Transcoder Node,Dual-shelf00 or 01Shelf 00

07, 08 —4.2.10 “Replacementof a CEM or CEM2 or

CEM3” (page 111)

CEM3


07, 08 —4.2.10 “Replacementof a CEM or CEM2 or

CEM3” (page 111)

IOM


Shelf 00 (01, 02,09, 10)


an IOM” (page 122)


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Table 2TCU 3000: location of the maintenance sheets (cont’d.)

Equipmenttype


Testsheet

Replacementsheet

IEM


Shelf 00 or 01

Shelf 00 (04, 06)or

Shelf 01(02, 04, 08, 10,

11, 13)


an IEM” (page 134)

TIM


Shelf 00 or 01

Shelf 00 (05)or

Shelf 01 (03, 09,12)


a TIM” (page 140)

RCM + Txcable + Rx

cable + CTU


Shelf 00 or 01+ SAI

— —

4.2.16 “Replacementof an RCM + Tx cable

+ Rx cable + CTU”(page 147)

SIM

Transcoder node,Dual-shelf00 or 01

Shelf 00 or 01

15 —4.2.17 “Replacement of

a SIM” (page 158)

ALM card PCIU — —4.2.19 “Replacement

of the ALM cardassembly” (page 165)

FMU module PCIU 1, 2 —4.2.20 “Replacement

of a FMU module”(page 170)

Fan unitTranscoder Node(upper or lower)

1, 2, 3, 4 — 4.2.21 “Replacement ofa FAN unit” (page 177)

Air filterassembly

Transcoder Node(upper or lower)

_ —4.2.22 “Replacement ofan air filter” (page 181)


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51.

Chapter 3 Preventive maintenanceprocedures

3.1 ObjectiveThis chapter provides a list of basic preventive maintenancerecommendations for the BSC 3000 and TCU 3000. The implementationof the preventive maintenance procedures is the responsibility of eachcustomer.

CAUTIONdShell commandsSome dShell commands could cause an outage when used onthe BSC 3000 or TCU 3000.

3.2 SummaryThe following table summarizes the preventive maintenance schedule forthe BSC 3000 and TCU 3000.

EquipmentRequired

testschedule

Recommendedreplacement

schedule

Discussed in Section:

Air filter assembly(BSC 3000 cabinet)

— approximately everythree months

—

Air filter assembly(TCU 3000 cabinet)

— approximately everythree months

—

Check Alarms Daily — 3.3.4 “Alarms check” (page 54)

Check Notifications Daily — 3.3.3 “Notifications check”(page 53)

Check status ofBSC objects

Daily — 3.3.7 “Check device state andstatus” (page 56)

Check trafficobservation

Weekly — 3.3.5 “Check traffic observation”(page 54)

Check BSC powersupply

Yearly — 3.3.6 “Check BSC PowerSupply” (page 55)


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52 Chapter 3 Preventive maintenance procedures

EquipmentRequired

testschedule

Recommendedreplacement

schedule

Discussed in Section:

Data consistency Weekly — 3.3.2 “Data consistency”(page 53)

MMS disk scan Weekly — 3.3.8 “Shared MMS disk scan”(page 57)

Passive OMUEthernet connection

Daily — 3.3.1 “Passive OMU Ethernetconnection” (page 52)

3.3 Test description3.3.1 Passive OMU Ethernet connection

This test is required because no alarm is issued for the loss of an Ethernetconnection to the passive OMU. Two users are defined on OMU module:omu and root. To log on as omu:

Under a login on a workstation enter the rlogin commandwctfs519-24> rlogin <OMU_IP_address> -l omu

omu’s Password: omu************************************************************** Welcome to FIX Version 4.3! *** Please see the REDEEM file in /us/lip/boss for information pertinent to* this release of the FIX Operating System. **************************************************************Last unsuccessful login: Mon Dec 3 14:53:33 CUT2001 on /dev/pts/0 from 47.164.136.141Last login: Mon Dec 10 17:18:01 CUT 2001 on/dev/pts/0 from 47.164.63.233

msgViOmuState displays the state (active or passive, duplex or simplex)of OMU module.

Under any login on OMU module:BSC90:/OMU (omu) $ /OMU/local/us/bin/msgViOmuState=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-OMU is MSG_MODULE_PASSIVEOMU is duplex=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-


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3.3 Test description 53

If the state is MSG_MODULE_PASSIVE and duplex, the test is finishedand OK. If the state is MSG_MODULE_ACTIVE and duplex, log to theother OMU module with the rlogin command from the workstation andcheck the state.

If the state is MSG_MODULE_ACTIVE and simplex or MSG_MODULE_PASSIVE and simplex, please call Network support.

3.3.2 Data consistencyThe purpose of the following steps is to detect an inconsistency betweenthe BDE (OMC-R database) and the BDA (MIB) of BSC 3000, pleaseperform an AUDIT BDA as described in BSS Maintenance Checks fromOMC-R (DS/BSS/APP/000001).

3.3.3 Notifications checkNotification must all be treated following Nortel GSM BSC 3000/TCU 3000Fault Clearing (411-9001-131).

Mandatory notifications to check are:

NOTIFICATION DESCRIPTION

2000: Module power failure Each BSC 3000 or TCU 3000 module can beinvolved

2004: Load balancing performed Capacity increase or hardware problem (TMUfaulty or just added)

2007: Overload threshold crossed High level of software capacity reached on OMUor TMU module

2005: Load Balancing result The current process distribution over theavailable TMUs

2008: hardware failure Each BSC 3000 or TCU 3000 module can beinvolved

2009: PCM failure A PCM link is faulty

2010 / 2011: SIM Module failure Loss of power module on CN

2012: Indication of a SCCP protocol error SS7 impact

2015 / 2017: ATM path failure link issue between two CN modules

2019: Synchronizing PCM indication Clock change; be sure it is due to a normalevent.

2021: IN Access failure The link between the IN and the CN is lost

2028: Restart context BSC 3000 or TCU 3000 board restart, may bedue to an abnormal abort of a program

2032: Miscellaneous SPM alarm IN or TCU 3000 faults, description provided bythe equipment


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NOTIFICATION DESCRIPTION

2033: Application failure spectrum trap, dump provided might beanalyzed by design

2034: Upgrade request An upgrade is on going or finished. Check thestatus

2036: TCU Access failure The link between the TCU and the IN is lost

2037: CN Board Restart Board restart, may be due to an internalmalfunction or normal defense

Running displayNotif.sh is helpful for this check (See/OMC/base/tools/shell/displayNotif.sh -h for moreinformation).

3.3.4 Alarms checkThe purpose of the following steps is to check active alarms of a BSS.These steps are aimed at verifying any new alarms that could have risenjust after a network operation (upgrade, reconfiguration...). In that case afallback operation may be needed.

The OMC-R must be running and the MMI accessible on the localmachine. The dedicated bscMdInterface object must be operational for theBSC to process. The necessary steps for this check are:

1. If not already done, log on to the OMC-R MMI2. For each BSC which bscNumber is in bscList, remotely log on to theactive server if not already done3. For each bscNumber in bscList, check the alarm by right-clicking on theobject and selecting shows alarms4. For each BSC 3000 which bscNumber is in bscList

Follow the fault clearing procedures in Nortel GSM BSC 3000/TCU 3000Fault Clearing (411-9001-131), to troubleshoot and resolve the activealarms.

3.3.5 Check traffic observationThe purpose of the following steps is to check the traffic observation atBTS (cell) level, using the C1611 observation counter (TCH allocation).The principle is to compare two successive observations (for example,between two maintenance check result) in order to detect any unexpectedchanges on traffic allocation at BTS level.

The OMC-R must be running and the MMI accessible on the localmachine. The dedicated bscMdInterface object must be operational for theBSC to process. A mdScanner object has been created on the dedicatedBSC object.


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WARNINGBoth the traffic and the mdScanner should be running for atleast one complete mdGranularityPeriod period.

The range of the mdGranularityPeriod, that is the recovery period of theobservation messages by the OMC-R agent, is:

[5, 10, 15] minutes ............... permanent general md

[15, 30, 60] minutes ............. Fast Statistic Observation (OFS)

[1440] minutes ..................... General Statistic Observation (OGS)

[5, 10, 15] minutes ............... Diagnostic Observation (ODIAG)

[1, 2, 3, 4, 5] minutes ........... performance monitor (Real Time Observation(ORT))

The necessary steps are:

1. If not yet done, log on to the OMC-R under administrator user.

2. For each bscNumber in bscList:

a. Remotely log on to the active server if not already done. If SSHservices are available, use SSH instead of r* services to log on.

b. Execute the tool:Under omc login:

... (omc) % /us/local/oam/bin/ds_cellObservation.sh-BbscNumber param(where - param = -OFS).

3. Note (or save in a file) all C1611 counters at zero, and compare themwith the last results (saved during the last BSS maintenance check).

For troubleshooting these steps:

• If the tool execution failed,

— Check that the fast statistic or real time or general statisticmdScannerType is present (following observation type).

— Make sure that the length of the mdGranularityPeriod observationperiod is not interfering with tool execution.

• If some cells are still not carrying traffic, some equipment may havefailed.

3.3.6 Check BSC Power SupplyWithout opening the doors, check the status of the LEDs located on thetop of the front panel of the module.


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Green LED status Red LED status Meaning

off off The SIM is not powered or the module is faulty

on on Wait until the end of the self-test (if any), The BISTis running or terminated unsuccessfully (if bothLEDs remain on, the module is faulty)

on off The SIM is operational; the module is not faulty

off on The SIM is in alarm state; the module is faulty

3.3.7 Check device state and statusAt the active OMC-R, run the script stStateChange.tcl to check the stateand status of hardware and software objects within the BSC 3000. It isrecommended to run this script daily to check for state changes in thelast 24 hours. Nortel also recommends running this script before anyoperations that require that the BSS be free of fault conditions, such asreparenting or an upgrade.

If installed, the script is in the directory /home/oam/oam/BSCe3_MaintPrev.If the script is not installed, see Nortel GSM BSS Fault ManagementMaintenance Principles (411-9001-039) for instructions on how to install it.

Run the following commands to perform daily fault surveillance with thestStateChange.tcl script:

cd /home/omc/oam/BSCe3_MaintPrev

stStateChange.tcl -FD1

By default the script reports on every BSC managed by the OMC-R.The -FD1 option causes the script to report on the period beginning atmidnight the previous day. It is possible to start the report for a differenthour by specifying the -FM option, followed by the number of the hour inthe 24-hour clock.

The script writes its output to the console and also to a log file in thedirectory /home/omc/oam/StateChanges. In the script output, any numberother than zero to the right of the name of an object indicates a possibleproblem with that object. For example, the following line indicates noproblem with the sw8kRm object, but the iem object has changed to astate that indicates a possible fault, and that the OMC-R has 31 applicablenotifications for this object.

| sw8kRm | 0 || iem | 31 |


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If the script output indicates any state changes during the specified timeperiod that correspond to a BSC 3000 fault, run the script again with theoptions to list objects and notifications.

stStateChange.tcl -BS<bscId> -FD1 -Obj -Notif

where

<bscId> is the number of the BSC that has the errorcondition (if you omit the BSC ID, the scriptreports on every BSC supervised by the OMC-R).

Perform the appropriate corrective actions for each notification as indicatedin the fault number document. For more information on the BSC 3000and TCU 3000, see Nortel GSM BSC 3000/TCU 3000 Fault Clearing(411-9001-131). If it is necessary to replace a card at the BSC, seeChapter 4 “Replacement procedures” (page 61).

After all corrective actions are complete, run the script again to verify thesanity of the system. Adjust the time with the -FH and -FM options to spanthe time during which the corrective action was performed. For exampleif the maintenance personnel run the script at 20:00, find failed devices,and complete the corrective actions by 21:00, the command to confirmthe status of the system is

stStateChange.tcl -BS<bscId> -FH21

Repeat if necessary to correct any additional fault conditions. Theobjective of this process is to be able to run the script and have it reportno state change conditions.

For more information about how the script works, how to interpret itsoutput, or for instructions on how to install the script if it is not availableon the OMC-R, see Nortel GSM BSS Fault Management—MaintenancePrinciples (411-9001-039).

3.3.8 Shared MMS disk scanThe shared disk scan checks for bad blocks in the storage media in theMMS. It checks only the disks contained in the shared MMS in slots 6 and9 of shelf 0; it does not check the private disks.

This scan supplements the audits that automatically check for bad blocksthat are discovered during the mirroring process. However, the manuallyinitiated scan has the advantage of identifying and attempting to correctblock failures before redundancy is lost within the RAID architecture,reducing the risk of lost data and potential outage. If the manually initiatedscan is not run, there is a risk that the software on the MMS may fail todetect some bad blocks before there is a loss of data.


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When a technician at the OMC-R activates the scan, the MMS firstperforms a scan on the primary disk. If the scan finds bad blocks on theprimary disk, it attempts to relocate them. When the scan of the primarydisk is complete, the MMS sends a notification 2053 to the OMC-R withthe scan results and then begins a scan of the secondary disk. If the scandetects bad blocks on the secondary disk it attempts to perform a copyfrom the primary disk, except in the case when there were bad blocks onthe primary disk and the scan was unable to relocate them.

When the scan aborts or completes successfully, the OMC-R receivesnotification 2053, which contains the results of the scan.

The scan will take approximately one hour if the scan finds no bad blocks,but the duration of the process increases in proportion to the amount ofdata that must be relocated or copied.

If an upgrade, on-line BDA build, or BDA audit is in progress when thescan starts, the scan will abort.

CAUTIONRisk of performance degradationThe MMS disk scan is intrusive and creates additional load onthe MMS.

Nortel recommends that maintenance staff performs thisprocedure only during the maintenance window, and that thedisk scan not run when other disk-intensive processes arerunning. Disk-intensive processes on the MMS include thefollowing:

• Build BDA

• Audit BDA

• BSC upgrade

• Call Trace / Call Path Trace collection

• Interference Matrix collection

• Call Drop Analysis

• Radio Measurements Distributions collection

• Any NRP

Step Action

At the OMC-R:1 Disable any disk-intensive features such as Interference Matrix,

Call Drop Analysis, or Radio Measurement Distribution.


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2 Invoke the scan by selecting MMS disk scan from the menu ofthe mms object and selecting the parameter Complete Scan.

3 Optionally, check the progress of the scan by selecting MMSdisk scan from the menu of the mms object and selecting theparameter Get status and results.

4 Wait for a notification 2053 with disk scan status set to 3 (scanperformed) to be returned for each disk (primary and secondary),which indicates that the scan is complete for both disks.

5 If the scan reports that bad blocks were detected and could notbe relocated (cause 4), or if the scan reports a failure with thecopy from the primary to the secondary disk (cause 5), performthe corrective action specified by the following table.

6 If the scan ran successfully and if the scan successfullyrelocated any bad blocks that it detected, manually clear anynotification 2008 sent for this MMS object.

--End--

Primary disk Secondary disk Corrective action

No bad blocks detected Problem detected during therelocation of bad blocks (cause5)

Replace the secondary disk(see hardware slot position inthe notification).

Bad blocks are detected but allbad blocks have been correctlyrelocated

Problem detected during therelocation of bad blocks (cause5)

Replace the secondary disk(see hardware slot position inthe notification).

Bad blocks detected andcannot be relocated (cause 4)

No problem is detected duringrelocation of bad blocks

Replace the primary disk (seehardware slot position in thenotification).

Bad blocks detected andcannot be relocated (cause 4)

Problem detected during therelocation of bad blocks (cause5)

Replacement of both disks hasto be performed with supportteam help.

The primary disk is not always the MMS unit in slot position 6: it ispossible for the disk in position 9 to be the primary disk. For this reasonit is important to check the slot position returned in the error notificationbefore performing a corrective action.


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61.

Chapter 4 Replacement procedures

4.1 Introduction4.1.1 Presentation

This chapter gives the replacement procedures for the BSC 3000 and TCU3000. Each procedure contains the following steps:

• Product reference

This step contains the PEC code and the CPC code of the module:

— The PEC code of a module is written on its label. This code is usedto order a spare part.

— The CPC code is a manufacture code.

• Intervention time

This paragraph indicates the mean time necessary to perform thereplacement procedure (it does not include troubleshooting time).

• Tools required

This paragraph indicates the standard and specific tools that arerequired to perform the procedure.

• Impact of the replacement on service

The impact of the replacement on service is given when there is onlyone failure in the cabinet (the redundant module is not faulty).

• Location

Figures are used to locate the faulty module in the cabinet.

• Procedure

The procedure contains both numbered steps (1, 2, ...) and alphasub-steps (a, b, ...).

4.1.2 Preliminary operationsThe replacement procedures given in this chapter do not requireequipment shutdown.


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62 Chapter 4 Replacement procedures

DANGERPersonnel safety rulesThe personnel working on the cabinet must be authorized towork according to applicable safety rules.

CAUTIONESDS handling precautionsWear an anti-static wrist band during every maintenance action,especially when handling the modules.

CAUTIONPotential outageNo dShell commands can be used on BSC 3000 and TCU 3000.Using dShell commands can result in a potential outage. Foradditional information contact Nortel Networks support.

4.1.2.1 CEM Maintenance on live productsBecause some maintenance procedures require a switch of CEM activityin the IN or TCU, it is mandatory to verify the CEM passive status. TheBSC 3000 IN or TCU 3000 can experience an outage, if the passive CEMis not enabled (ready) when a SWitch of ACTivity from the active CEM ismanually performed.

In the following procedure, the abbreviation CEM refers to all the variantsof the module (CEM, CEM2, and CEM3).

Prerequisites:

• Because the IP addresses of CEM are not available from OMC,ensure the maintenance people on site have got the information orcan retrieve it.

• CEM units taken as spares in case of replacement must be tested withthe bulletin 242.

Procedure

Step Action

1 Verification of the CEM state at the MMI of the OMC.

a From OMC workstation, perform a display set on each CEM,with ’display dynamic data’. The active CEM state must be’enabled’ and ’providing service’. The passive CEM must be’enabled’ and ’hot standby’ and not ’degraded’ to proceed.

b Passive CEM reset

i In a Unix window, telnet to the passive CEM and make aroot connection. Run the command /reset soft and


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4.1 Introduction 63

verify that all of the following notifications and alarmsoccur at the OMC for the passive CEM:

• Alarm: State Change -- Disabled failed

• Notification 2032 miscellaneous SPM alarm --equipment malfunction

• Alarm cleared

• State change -- unlocked enabled hot (final state)

ii If the passive CEM does not come back in this state, askpeople on site to replace the board. If it does, continue toswitch and reset the active CEM.

c Active CEM reset

i In a Unix window, telnet to the active CEM and make aroot connection. Run the command /reset soft . Theactive CEM is reset and the passive one becomes active.Wait approximately 10 minutes for a nominal state.

ii At the MMI of the OMC, verify that both CEMs are”enabled”, and that the newly active CEM is ”providingservice”.

d Go to step 3.

2 CEM reset by TML 3000 (requires IP connection to both CEMs)

a

i Using a RJ 45 crossed cable, connect the Ethernet boardof the laptop PC to (Direct Connection) active CEMmodule (Fixed green LED).

ii Launch the TML 3000 application. The customization data(such as IP address and Host name) can be found underMemory-Get Data Customization

iii Run the command Test - Module - Module Statusto verify the status of the (active) CEM. If the TMLconnection works, the active CEM is enabled. Thepassive CEM must be Online - Hot Standby and the activeCEM must be Online - Providing Service

iv If the passive CEM is red (failed) or orange (degraded)on the MMI, replace the board. If not, both CEMs can bereset.

b Passive CEM reset

i Right click on the object and run the Reset command.

ii Confirm the request when the warning window appears.After the reset starts, a ’Process in Progress’ window willappear until it is done.


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iii The passive CEM must return to On-line - Hot Standbystatus. If not, replace the board.

c Active CEM reset

i Right click on the active CEM object and run the Resetcommand. This will cause loss of the TML connection(this is normal behavior).

ii Connect the TML to the newly active CEM. This meansthat the SWACT was successful. Allow up to 10 minutesfor the final states to be visible.

iii Ask the OMC operator to verify that the final states areconsistent with the states in the previous steps.

d Go to step 3.

3 Call processing checks.

This step verifies that calls are OK with the new active CEM afterthe SWACT operation.

a At the OMC, check that CIC are busy

i Select a pcm A object.

ii Perform a display all command on each xtp object.

iii Repeat for each pcm A object.

b At the OMC, check that TDMA are busy

i Select a TDMA object.

ii Perform a display channel state command.

iii Read the result in the session log to verify if some arebusy.

--End--

4.1.3 ToolsScrewdrivers are the only tools required.

4.2 Replacement proceduresThe following table provides the equipment types and associatedreplacement procedures.

Table 3BSC 3000/TCU 3000: identification of replacement procedures

Equipment Paragraph number

Opening/Closing of the doors 4.2.1 “Opening/Closing of doors” (page 66)


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4.2 Replacement procedures 65

Table 3BSC 3000/TCU 3000: identification of replacement procedures (cont’d.)


Extraction/Insertion of a module 4.2.2 “Extraction/Insertion of a module” (page68)

OMU (Operation and Maintenance Unit) module 4.2.3 “Replacement of an OMU module”(page 75)

Shared MMS (Mass Memory Storage) module 4.2.4 “Replacement of a shared MMSmodule” (page 79)

Private MMS module 4.2.5 “Replacement of a private MMSmodule” (page 84)

ATM-SW (ATM SWitch controller) module 4.2.6 “Replacement of an ATM-SW module”(page 90)

ATM-RM (ATM Resource Module) 4.2.7 “Replacement of an ATM-RM” (page96)

TRM (Transcoder Resource Module) 4.2.8 “Replacement of a TRM” (page 102)

TMU (Traffic Management Unit) module 4.2.9 “Replacement of a TMU module” (page107)

CEM (Common Equipment Module) or CEM2 4.2.10 “Replacement of a CEM or CEM2 orCEM3” (page 111)

8K-RM (circuit switching matrix Resource Module) 4.2.11 “Replacement of an 8K-RM” (page118)

IGM (IP Gateway Module) 4.2.13 “Replacement of an IGM” (page 129)

IOM (Interface Optical Module) 4.2.12 “Replacement of an IOM” (page 122)

IEMP or IEMD (Interface Electronic Module) 4.2.14 “Replacement of an IEM” (page 134)

TIM (Termination Interface Module) 4.2.15 “Replacement of a TIM” (page 140)

RCM (Resource Complex Mini) backplane + Txcable + Rx cable + CTU (Cable Transition Unit)module

4.2.16 “Replacement of an RCM + Tx cable +Rx cable + CTU” (page 147)

SIM (Shelf Interface Module) 4.2.17 “Replacement of a SIM” (page 158)

Remove/Install the PCIU (Power Cabling InterfaceUnit) cover

4.2.18 “Remove/Install the PCIU cover” (page162)

ALM (ALarm Module) card 4.2.19 “Replacement of the ALM cardassembly” (page 165)

FMU (Fan Management Unit) module 4.2.20 “Replacement of a FMU module”(page 170)

Fan unit 4.2.21 “Replacement of a FAN unit” (page177)

Air filter assembly 4.2.22 “Replacement of an air filter” (page181)


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Table 3BSC 3000/TCU 3000: identification of replacement procedures (cont’d.)


Removal of a PCIU 4.2.23 “Removal of a PCIU” (page 183)

Installation of a PCIU 4.2.24 “Installation of a PCIU” (page 183)

Removing and replacing DS512 links for BSC highswitching capacity

4.2.27 “Removing and replacing DS512 linksfor BSC high switching capacity” (page 195)

Replacement of a shelf backplane 4.2.28 “Replacement of a shelf backplane”(page 201)

ATTENTIONTwo operations are common for most of the replacement procedures: 4.2.1“Opening/Closing of doors” (page 66) and 4.2.2 “Extraction/Insertion of amodule” (page 68).

4.2.1 Opening/Closing of doorsIntervention timeNone.

Tools requiredScrewdriver.

Impact on serviceNone.

LocationSee 4.2.1 “Opening/Closing of doors” (page 66).

Procedure

Step Action

1 Safety instructions

CAUTIONESDS handling precautionsWear the anti-static wrist band when performing themaintenance procedure.

2 Preliminary operations

a Locate the shelf to open.

3 Opening access doors

a Unlock the access doors:


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• Turn the locking screw one quarter turn counter clockwise.For more information, see Figure 19 "Opening/Closing thedoors" (page 68).

• Ensure that the slot in the locking screw is in the verticalposition.

b Open the access doors:

• Carefully pull down the spring lock at the top of each door.For more information, see Figure 19 "Opening/Closing thedoors" (page 68).

• At the same time, carefully pull each door toward youusing the finger grip at the bottom of the door.

c Slide the doors back into the retracted position.

4 Opening the cable-through door

a Unlatch the cable-through door by grasping the thumbgrips and pulling up. For more information, see Figure 19"Opening/Closing the doors" (page 68).

b Rotate the cable-through door to the open position.

5 Closing the cable-through door

a Rotate the cable-through door to the close position.

b Latch the cable-through door by grasping, pulling up anddropping the thumb grips.

6 Closing the access doors

a Slide the doors into the intermediate position.

b Carefully pull down the spring lock at the top of each doorand close the access doors.

c Lock the access doors by turning the locking screw onequarter turn clockwise. The doors are locked when the slot inthe locking screw is in the horizontal position.

7 The procedure is complete.

--End--


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Figure 19Opening/Closing the doors

4.2.2 Extraction/Insertion of a moduleIntervention timeThe intervention time is approximately five minutes.


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Tools requiredClamp.

Impact of the replacement on service

CAUTIONService interruptionService is lost for the module that is extracted.

CAUTIONEquipment malfunctionDo not insert or extract any module while the OMC-R - BSC3000 link is cut off (while the BSC 3000 is switched off).

Procedure

Step Action


CAUTIONESDS handling precautionsWhile handling modules or cables, wear a wrist strapconnected to the wrist-strap grounding point on theframe. This protects the modules against damagecaused by static electricity.

CAUTIONEquipment damageFront panel latch breakage.

Holding a module by the Front panel latch onlycan result in Front panel latch breakage. Once themodule has been pulled half way out of the shelf,carefully grasp the module from underneath for moresecure support and continue to remove the modulefrom the shelf.

Avoid touching any wires or internal parts of themodule.

CAUTIONEquipment damage due to empty slotsEquip all unused slots on a powered shelf with fillermodules. Filler modules maintain electromagneticinterference (EMI) integrity, and shelf airflow patternsto ensure proper cooling.


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CAUTIONEquipment malfunctionThe equipment remains powered during extractionor insertion of a module. Otherwise, this operationwould not be detected and the OMC database wouldnot be updated.

CAUTIONEquipment malfunctionHot extraction of the active CEM in the InterfaceNode and TCU is not supported. Before removing theactive CEM, it is first necessary to perform a switch ofactivity (SWACT) to the other CEM.

ATTENTIONCorrective maintenance of a passive board is always allowed. BSC3000 boards are designed not to require preventive maintenance.


a Locate the defective module (inform by the OMC-R operator).

b Open the access doors of the relevant shelf. For moreinformation, see 4.2.1 “Opening/Closing of doors” (page 66).

c Check the status of the LEDs located on the front panel ofthe module:

• green LED off and red LED off: the module is notpowered or the module is faulty: you can replace themodule (go to step 3)

• green LED on and red LED on: wait until the end of theself-test (if any); if both LEDs still remain on, the BISTis running or terminated unsuccessfully (except MMSmodule), the module is faulty: replace the module (go tostep 3)

• green LED is blinking and red LED off: the module ispassive (not available for the TMU module); it is not faulty

• green LED on and red LED off: the module is operational;it is not faulty

• green LED off and red LED on: the module is in alarmstate; the module is faulty: replace it (go to step 3)

• green LED off and red LED is blinking: the path isfinding: the module can be removed (go to step 3)

3 Extraction of the module


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DANGERMetallic parts of the module can be hot.

a Open the front panel latches on the module to be extracted.For more information, see Figure 20 "Extraction of a module"(page 73), step 1.

b While grasping the front panel latches, gently pull the moduletoward you until it protrudes by about 2 in. (5.1 cm) withrespect to the equipment shelf. For more information, seeFigure 20 "Extraction of a module" (page 73), step 2).

WARNINGHeavy liftingModules can weigh up to 9 lb (4 kg).

c Hold the module by the front panel by one hand whilesupporting the bottom edge with the other hand. For moreinformation, see Figure 20 "Extraction of a module" (page73), step 3. Gently pull the module toward you until it clearsthe shelf.

CAUTIONVerify that the two yellow plastic rings arecorrectly inserted on the guide of the removedmodule. If the plastic rings are blocked on theback panel, remove them with a clamp beforeinserting the new module.

d Place the module in an electrostatic discharge (ESD)protective container.

4 Insertion of the module

ATTENTIONA wait of 15 seconds is required due to software and hardwarereaction time between successive plug and play actions on the sameInterface Node or TCU, even if different boards are involved. Forexample, if a board is extracted and then re-inserted in less than 15seconds, the insertion may not be properly detected.

ATTENTIONInsert modules one by one. Once a module is inserted, wait for it tostart (check LED status) before inserting the next module.

ATTENTIONIn case you want to reinsert the module that you have just removed,wait 15 seconds after extraction to reinsert it.


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CAUTIONUse a replacement module with a supported PECthat is required to avoid equipment malfunction.

a Insert the replacement module into the shelf.

b Open the front panel latches of the module.

c Hold the module by the front panel with one hand whilesupporting the bottom edge with the other hand. For moreinformation, see Figure 21 "Insertion of a module" (page 74),step 1. Gently slide the module into the shelf.

d Using your fingers or thumbs, push on the upper and loweredges of the front panel to ensure that the module is fullyseated in the shelf. For more information, see Figure 21"Insertion of a module" (page 74), step 2.

e Close the front panel latches to secure the module. For moreinformation, see Figure 21 "Insertion of a module" (page 74),step 2.

5 Self-test the module

a Wait until the module performs a self-test. The self-test iscomplete when the green LED remains on and the red LEDremains off. If the red LED stays on or the red LED becomeson after an extended period of time, the replacement modulemay be defective; remove the module and replace it withanother module.

6 Additional operations

a Close the access doors. For more information, see 4.2.1“Opening/Closing of doors” (page 66).


--End--


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Figure 20Extraction of a module


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Figure 21Insertion of a module


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4.2.3 Replacement of an OMU moduleProduct reference

RoHS codes Non-RoHS codes

Equipment PEC CPC PEC CPC

— — NTQE03AA A0733343OMU module

NTQE03AG N0101847 NTQE03AB A0878426

Intervention timeThe intervention time is approximately 10 minutes if no copy of the privateMMS disk is needed, 35 minutes if a copy of the private MMS disk isneeded.

Tools requiredNone.

Impact of the replacement on serviceNone.

The redundancy of the OMU modules is (1 active + 1 passive) hotstand-by.

LocationSee Figure 7 "Logical slot numbering with E1 configuration of BSC 3000cabinet (electrical)" (page 25).

Procedure

Step Action




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Holding a module by the front panel latch only canresult in Front panel latch breakage. Once themodule has been pulled half way out of the shelf,carefully grasp the module from underneath for moresecure support and continue to remove it from theshelf.


CAUTIONExtraction/Insertion of a moduleNo module extraction or insertion must be performedduring Control Node, Interface Node or TranscoderNode startup.


a The OMC-R has provided you with the shelf number and thelogical slot number of the faulty module. Figure 7 "Logicalslot numbering with E1 configuration of BSC 3000 cabinet(electrical)" (page 25) gives the location of this slot.

b Without opening the doors, check the status of the LEDslocated on the front panel of the module:

• green LED off and red LED off: the OMU module is notpowered or the module is faulty

• green LED on and red LED on: wait until the end ofthe self-test (if any), the BIST is running or terminatedunsuccessfully; if both LEDs still remain on, the OMUmodule is faulty: replace the module (go to step 3)

• green LED is blinking and red LED off: the OMU moduleis passive; the module is not faulty

• green LED on and red LED off: the OMU module isactive; the module is not faulty

• green LED off and red LED on: the OMU module is inalarm state; the module is faulty

• green LED off and red LED is blinking: the path isfinding: the OMU module can be removed

• green LED is blinking and red LED is blinking: if bothLEDs are blinking simultaneously, wait the OMU masteractivation; when the two LEDs are blinking alternatively,wait until the ATM-SW downloading


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c Open the access doors of the relevant shelf. For moreinformation, see 4.2.1 “Opening/Closing of doors” (page 66).

d If you want to extract a faulty OMU module (red LED on), goto step 3.

ATTENTIONFN 2008 Notification logs should be analyzed prior to thereplacement of an omu or private MMS card. When there is afaulty OMU, the problem might be in either the private MMS, theOMU or in both. It is recommended to change the private MMSfirst and if this is not successful then change the OMU.

ATTENTIONBefore extracting an operational OMU module, make sure it ispassive first (red LED off and green LED blinking). If it is not thecase, perform an OMU switch of activity (swact) with your TML(as described in Nortel GSM BSC 3000/TCU 3000 Commissioningand Configuration—TML User Guide (411-9001-139)). When theOMU is passive, isolate the OMU by pressing with a ballpointpen the Removal request pushbutton, which is located on thefront panel of the OMU module. For more information, see Figure22 "OMU module: front panel" (page 78). Wait until the red LEDis blinking (this can take up to 3 minutes), and then extract theOMU module.


a Disconnect the Ethernet link cable from the front panel of themodule.

b Extract the OMU module. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 3.

4 Insertion of the spare part

a Insert an OMU module. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 4.

b When the green LED is blinking (this can take up to sevenminutes), connect the Ethernet link cable to the RJ45connector on the front panel of the OMU module.

5 Checking the status of the LEDs

a At first, both the green and red LEDs go on for approximately3 minutes (during the self-test).

b After awhile, the red LED goes off and the green LEDremains on for 3 or 4 minutes. Thus, the module is starting.

c Awhile later, the green LED starts blinking and the red LEDremains off. Thus, the module is operational.



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--End--

Figure 22OMU module: front panel


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4.2.4 Replacement of a shared MMS moduleProduct reference



Shared MMS module(MMS1)

— — NTQE05AA A0733345

Shared MMS module(MMS2)

NTQE05BA N0037789 — —

Replacement MMS typeThe replacement shared MMS module must be compatible with theexisting configuration. Note the following:

• MMS1 is supported by either a 9 Gbyte hard disk, or by a 36 Gbytehard disk clamped to a 9 Gbyte disk

• MMS2 is supported by a 73 Gbyte disk only

• If the existing configuration contains two MMS1 modules, replace thefailed module with an MMS1 or an MMS2 module.

• If the existing configuration contains one MMS1 module and oneMMS2 module, replace the failed module with an MMS2 module

• If the existing configuration contains two MMS2 modules, replace thefailed module with an MMS2 module

The general rule is that an MMS module must always be replaced by thesame type of module, or one of a higher capacity. Thus an MMS1 maybe replaced by an MMS1 or MMS2, whereas an MMS2 must always bereplaced by another MMS2.

Intervention timeThe intervention time is approximately 30 minutes.

Tools requiredNone.

Impact of the replacement on serviceThe redundancy of the MMS modules located in the shared slot (1 + 1) aremirrored. The modules work in parallel.


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CAUTIONRisk of full outage of the BSCANO FN 2008 Notification logs should be analyzed prior to thereplacement of a Shared MMS module.

Call Nortel Support, if there are FN 2008 notifications for bothShared MMS modules. Replacement of a Shared MMS modulein this scenario can cause a full outage of the BSC.


Procedure

Step Action




Holding a module by the front panel latch only,can result in Front panel latch breakage. Once themodule has been pulled half way out of the shelf,carefully grasp the module from underneath for moresecure support and continue to remove the modulefrom the shelf.


CAUTIONExtraction/Insertion of a moduleNo module extraction or insertion must be performedduring Control Node or Interface Node or TranscoderNode startup.


a The OMC has provided you with the shelf number and thelogical slot number of the faulty module. Figure 7 "Logicalslot numbering with E1 configuration of BSC 3000 cabinet(electrical)" (page 25) gives the location of this slot.


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• green LED off and red LED off: the MMS module is notpowered; the module is faulty

• green LED on and red LED on: wait until the end of theself-test (if any); if both LEDs still remain on, the MMSmodule is not managed or not created: the module isfaulty

• green LED is blinking and red LED off: the MMS moduleis not operational (disk is stopping). thus the module isfaulty

• green LED on and red LED off: the MMS module isactive and unlocked; the module is not faulty

• green LED off and red LED on: the MMS module is in analarm state: the module is faulty

• green LED off and red LED is blinking: the path isfinding: the MMS module can be removed


d If you want to extract a faulty MMS module, go to step 3.

ATTENTIONBefore extracting an operational MMS module (red LED off andgreen LED on), isolate the hard disk by pressing with a ballpointpen the ’Removal request pushbutton’, which is located on thefront panel of the MMS module. For more information, see Figure23 "MMS module: front panel" (page 83). The Control Node willthen stop duplicating the contents of the shared disk files on thisMMS module, and isolate the disk bus.

e If you want to extract an operational MMS module, press the’Removal request pushbutton’. Only when the red LED isblinking, extract the shared MMS module.

ATTENTIONIf the module is not extracted in the 15 minutes following the redLED blinking, this module returns automatically into service (greenLED on and red LED off).

f Go to step 3.


a Extract the MMS module. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 3.


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ATTENTIONA wait of 15 seconds is required due to software and hardwarereaction time between successive plug and play actions on thesame Control Node, even if different boards are involved. Forexample, if a board is extracted and then re-inserted in less than15 seconds, the insertion may not be properly detected.

ATTENTIONInsert modules one by one. Once a module is inserted, wait for itto start (check LED status) before inserting the next module.

ATTENTIONIn case you want to reinsert the module that you have justremoved, wait 15 seconds after extraction to reinsert it.


a Insert an MMS module. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 4.


a At first, both the green and red LEDs go on for approximately1 minute (during the self-test).

b If the self-test is successful:

1. The red LED goes off and the green LED starts blinking(the disk is updating). In fact, the content of the remainingshared MMS module is duplicated to the new sharedMMS module. The duration time for updating the disk isapproximately 30 minutes.

2. After awhile, the red LED remains off and green LEDgoes on. This indicates the disk is operational andupdated.

c If the self-test is unsuccessful, the red LED remains on,and the green LED goes off (a hardware fault 2001 is alsoreported at the OMC-R). This indicates that the replacementMMS module is not compatible with the existing MMSmodule. Extract the replacement module, and insert one thatis compatible.




--End--


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Figure 23MMS module: front panel


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4.2.5 Replacement of a private MMS moduleProduct reference



Private MMS module(MMS1)

— — NTQE05AA A0733345

Private MMS module(MMS2)

NTQE05BA N0037789 — —

Replacement MMS typeThe replacement private MMS module must be compatible with theexisting configuration. Note the following:

• MMS1 is supported by either a 9 Gbyte hard disk, or by a 36 Gbytehard disk clamped to a 9 Gbyte disk

• MMS2 is supported by a 73 Gbyte disk only

The general rule is that an MMS module must always be replaced by thesame type of module, or one of a higher capacity. Thus an MMS1 maybe replaced by an MMS1 or MMS2, whereas an MMS2 must always bereplaced by another MMS2.


Tools requiredNone.


The redundancy of the MMS modules located in the private slot is’one private MMS per OMU’. If the private MMS is extracted, then thecorresponding OMU is out of service.

LocationFor more information, see Figure 7 "Logical slot numbering with E1configuration of BSC 3000 cabinet (electrical)" (page 25).

Procedure

Step Action



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Holding a module by the front panel latch only canresult in Front panel latch breakage. Once themodule has been pulled halfway out of the shelf,carefully grasp the module from underneath for moresecure support and continue to removing it from theshelf.


CAUTIONExtraction/Insertion of a moduleNo module extraction nor module insertion must beperformed during Control Node, Interface Node orTranscoder Node startup.


a The OMC has provided you with the shelf number andthe logical slot number of the faulty module. The Figure 7"Logical slot numbering with E1 configuration of BSC 3000cabinet (electrical)" (page 25) gives the location of this slot.


• green LED off and red LED off: the MMS module is notpowered; the module is faulty

• green LED off and red LED on: the MMS module is in analarm state: the module is faulty

• green LED on and red LED on: wait until the end of theself-test (if any); if both LEDs still remain on, the MMSmodule is not managed or not created: the module isfaulty

• green LED is blinking and red LED off: the MMS moduleis not operational (disk is stopping). thus the module isfaulty

• green LED on and red LED off: the MMS module isoperational; the module is not faulty

• green LED off and red LED is blinking: the path isfinding: the MMS module can be removed.


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d Disconnect the Ethernet link cable from the OMU module.For more information, see 4.2.3 “Replacement of an OMUmodule” (page 75).

3 Extraction of the faulty module

a If the BSC has only one private MMS module (simplexconfiguration), go to the next step.

b If the MMS module to be replaced is faulty and the BSC isoperating from the redundant private MMS module, For moreinformation on how to extract the faulty private MMS module,see 4.2.2 “Extraction/Insertion of a module” (page 68), step 3.

ATTENTIONThe faulty disk in a BSC with a redundant private MMS diskshould be removed before a new disk is updated to preventa transfer of information from the faulty disk. Also, if the newdisk is inserted too quickly after the faulty disk is removed, asecond reset can start before the first one is completed and causeadditional problems.

4 Extraction of an operational module

a If you want to extract an operational MMS module, make surethe related OMU (OMU in shelf 1 / slot 5 for MMS in shelf 0/ slot 5, OMU in shelf 1 / slot 9 for MMS in shelf 0 / slot 10)is passive first (red LED off and green LED blinking). If itis not the case, perform an OMU switch of activity (swact)with your TML (as described in Nortel GSM BSC 3000/TCU3000 Commissioning and Configuration—TML User Guide(411-9001-139).

b When the OMU is passive, isolate the hard disk by pressingthe Removal request pushbutton of the MMS with aballpoint pen, which is located on the front panel of themodule. For more information, see Figure 24 "MMS module:front panel" (page 89). The Control Node will then shut downthe private MMS correctly and isolate the bus. Only when thered LED is blinking, (after two or three minutes) extract theMMS module. Go to step c.

Each time the user presses the Removal request pushbutton the red and green LED go on for about two secondsto acknowledge the request.

ATTENTIONProcedure abort: if the module is not faulty and if the MMSmodule is not extracted during the 15 minutes following the redLED flickering, then this module automatically returns into service(green LED on and red LED off).


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ATTENTIONCase of a simplex BSC: if the private MMS module is not faultyand if the other OMU + private MMS couple is not in service,extracting the private MMS module will result in an outage (dueto the lack of OMU), so the red LED of the private MMS will notblink because there will no longer be an active OMU to managethe LEDs: the LEDs will only go off.

c Extract the MMS module. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 3.

5 Update the spare module with the contents of the active privateMMS disk.

a Remove the filler that is located in slot 07 or 08 of the shelf00 (Control Node).

b Insert a new MMS module into slot 07 or 08 of shelf 00(optional MMS slot). For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 4.

c At first, both the green and red LEDs go on.

d Then, the content of the active private MMS is duplicatedto the MMS module. This operation takes a few minutesduring which the green LED blinks and the red LED is off.Then, the green LED goes off and the red LED blinks. Thus,the module is now updated and can be inserted at its rightposition in the private slot (slot 05 or 10 of shelf 00).

e Extract the updated spare MMS module. For moreinformation, see 4.2.2 “Extraction/Insertion of a module”(page 68), step 3.

6 Before inserting the private MMS module, be sure the Ethernetlink of the OMU module is not connected to the hub.

ATTENTIONA wait of 15 seconds is required due to software and hardwarereaction time between successive plug and play actions on the sameControl Node, even if different boards are involved. For example, if aboard is extracted and then re-inserted in less than 15 seconds, theinsertion may not be properly detected.

ATTENTIONInsert modules one by one. Once a module is inserted, wait for it tostart (check LED status) before inserting the next module.

ATTENTIONIn case you want to reinsert the module that you have just removed,wait 15 seconds after extraction to reinsert it.

7 Insertion of the updated module in the private slot

a Reinsert the filler in slot 07 or 08 of shelf 00.


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b Insert the updated MMS module into slot 05 or 10 of shelf00 (private MMS slot). For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 4.


a At first, the MMS green LED is on (for one second after MMSinsertion).

b Then, both green and red LEDs of the MMS and thecorresponding OMU are on (for one second).

c During the two to three minute OMU boot, the green LEDof the MMS remains on. Both green and red LEDs of thecorresponding OMU remain on.

d When the OMU boot is complete, the green LED on theMMS and the OMU should be on, while the red one is off.This signals that the MMS module is active and unlocked.If the green LED on the MMS and the OMU is off, whilethe red one is on, then the replacement MMS module isnot compatible with the existing MMS module. (Note that ahardware fault 2001 is also reported at the OMC-R.) Extractthe replacement module, and insert one that is compatible.

9 Reconnect the Ethernet link cable of the OMU module.




--End--


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Figure 24MMS module: front panel


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4.2.6 Replacement of an ATM-SW moduleProduct reference



— — NTQE06AA A0733346ATM-SW module

NTQE06AG N0101848 NTQE06AB A0872205


Tools requiredNone.


The redundancy of the ATM-SW modules is (1 active + 1 active).The modules work in parallel.

ATTENTIONThere are two fiber-optic links between Control Node and Interface Node (eachlink is made of an ATM-SW module, a Tx fiber-optic cable, an Rx fiber-opticcable, an ATM-RM). When both links are faulty, service is lost (faulty ATM-SWon one link and faulty ATM-RM on the other link, for example).

ATTENTIONBefore removing an ATM-SW module (see the following procedure), ensure thatthe other ATM fiber-link is operational (in order to avoid an outage of the BSC3000).


Procedure

Step Action




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CAUTIONEquipment damageFront panel latch breakage

Holding a module by the front panel latch only canresult in Front panel latch breakage. Once themodule has been pulled half way out of the shelf,carefully grasp the module from underneath for moresecure support and continue to remove the modulefrom the shelf.


CAUTIONEquipment damageDamage to fiber-optic cables

Take care when handling fiber-optic cables. Do notcrimp or bend fiber-optic cables to a radius of lessthan one inch (25 mm).

DANGERLaser radiation exposureThe exposed ends of fiber-optic cables can emitharmful laser radiation. Do not look at the ends offiber-optic cables unless protector caps are in place.Disconnect all laser sources when personnel areworking with fiber-optic cables.

CAUTIONExtraction/Insertion of a moduleNo module extraction nor module insertion must beperformed during Control Node, Interface Node orTranscoder Node startup.


a The OMC has provided you with the shelf number and thelogical slot number of the faulty module. Figure 7 "Logicalslot numbering with E1 configuration of BSC 3000 cabinet(electrical)" (page 25) provides the location of this slot.


• green LED off and red LED off: the ATM-SW module isnot powered or the module is faulty

• green LED on and red LED on: wait until the end ofthe self-test (if any), the BIST is running or terminatedunsuccessfully; If both LEDs still remains on: theATM-SW module is faulty


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• green LED is blinking and red LED off: the ATM-SWmodule is passive; the module is not faulty

• green LED on and red LED off: the ATM-SW module isactive and unlocked; the module is not faulty

• green LED off and red LED on: the ATM-SW module is inalarm state; the module is faulty



a Open the front panel latches of the module to be replaced.For more information, see 4.2.2 “Extraction/Insertion of amodule” (page 68), step 3a.

b Label each fiber-optic cable. Use transmit for the top cableand receive for the bottom cable.


Take care when handling fiber-optic cables. Donot crimp or bend fiber-optic cables to a radius ofless than one inch (25 mm).

DANGERLaser radiation exposureThe exposed ends of fiber-optic cables can emitharmful laser radiation. Do not look at the endsof fiber-optic cables unless protector caps arein place. Disconnect all laser sources whenpersonnel are working with fiber-optic cables.

c Disconnect the top cable from the ATM-SW module.For more information, see Figure 26 "ATM-SW module:fiber-optic cable plug-in" (page 95). After the cable has beenremoved, cap the connector on the ATM-SW module (rubbercaps) in order to protect the plug. Store the cable in the cabletrough. Perform the same operation (step 3c) for the bottomcable of the ATM-SW module.

ATTENTIONBefore removing the ATM-SW module, ensure that the fiber-opticcables are stored below the bottom level of the module shelf toavoid cable damage when the module is removed.

d Extract the ATM-SW module. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 3 from step3b.


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a Insert an ATM-SW module in the shelf. For more information,see 4.2.2 “Extraction/Insertion of a module” (page 68), step 4.

b Remove the rubber caps located on the Tx and Rxconnectors of the ATM-SW module.

c Reconnect the fiber-optic cables on the ATM-SW moduleaccording to the following:

• left ATM-SW connected to the left ATM-RM

• right ATM-SW connected to the right ATM-RM

• Rx of the ATM-SW connected to the Tx of the relevantATM-RM

• Tx of the ATM-SW connected to the Rx of the relevantATM-RM

• bottom cable plugged before top cable

d Close the cable trough door.


a At first, both the green and red LEDs go on for approximately15 seconds (during the self-test).

b Then, both the green and red LEDs blink simultaneously forapproximately 45 seconds (the ATM-SW waits until OMUmaster activation is ready).

c Next, both the green and red LEDs blink alternatively forapproximately 15 seconds (during software downloading).

d After awhile (30 seconds), the red LED goes off and thegreen LED remains on. Thus, the module is active andunlocked.



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--End--

Figure 25ATM-SW module: front panel


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Figure 26ATM-SW module: fiber-optic cable plug-in


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4.2.7 Replacement of an ATM-RMProduct reference



— — NTLX73BA B0251746ATM Resource Module

NTLX73CA N0078683 NTLX73BB B0257220

Attenuator (plugged in on the Txoptical connector of the ATM-RMfront panel)

— N0107889 — A0830671


Tools requiredNone.


The redundancy of the ATM-RMs is (1 active + 1 (almost) passive).The modules work in parallel.

ATTENTIONThere are two fiber links between the Control Node and the Interface Node(each link is made up of an ATM-SW module, a Tx fiber-optic cable + attenuator,an Rx fiber-optic cable, an ATM-RM). When both links are faulty (ATM-SW faultyon a link and ATM-RM faulty on the other link for example), service is lost.

ATTENTIONBefore removing an ATM-RM (see the following procedure), check that the otherATM fiber-link is operational (in order to avoid the outage of the BSC 3000).

ATTENTIONAn ATM-RM is a single-mode type module. This type of module is designedto provide a powerful Tx light beam. The ATM-SW transceiver is a multimodetype device. So, when an ATM-RM is used with an ATM-SW (BSC 3000), itis necessary to fit the ATM-RM Tx output with an attenuator in order to avoidATM-SW damage.



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Procedure

Step Action




Holding a module by the front panel latches onlycan result in Front panel latch breakage. Once themodule has been pulled half way out of the shelf,carefully grasp the module from underneath for moresecure support and continue to remove the modulefrom the shelf.









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• green LED off and red LED off: the ATM-RM is notpowered or the module is faulty

• green LED on and red LED on: wait until the end ofthe self-test (if any), the BIST is running or terminatedunsuccessfully; if both LEDs still remains on, the moduleis faulty

• green LED is blinking and red LED off: the ATM-RM ispassive; the module is not faulty

• green LED on and red LED off: the ATM-RM isoperational; the module is not faulty

• green LED off and red LED on: the ATM-RM is in alarmstate; the module is faulty








c Disconnect the top cable (fiber-optic cable + attenuator)from the ATM-RM. For more information, see Figure 28"ATM-RM: fiber-optic cable plug-in" (page 102). During thisoperation, the attenuator remains plugged into the fiber-opticcable connector. After the cable has been removed, cap theconnector on the ATM-RM (rubber cap) in order to protect theplug. Store the cable (fiber-optic cable + attenuator) in thecable trough.


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d Disconnect the bottom cable (fiber-optic cable) from theATM-RM. For more information, see Figure 28 "ATM-RM:fiber-optic cable plug-in" (page 102). After the cable havebeen removed, cap the connector on the ATM-RM (rubbercap) in order to protect the plug. Store the cable (fiber-opticcable) in the cable trough.

ATTENTIONBefore removing the ATM-RM, ensure that the fiber-optic cablesare stored below the bottom level of the module shelf to avoidcable damage when the module is removed.

e Extract the ATM-RM. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 3.

ATTENTIONA wait of 15 seconds is required due to software and hardwarereaction time between successive plug and play actions onthe same Interface Node or TCU, even if different boards areinvolved. For example, if a board is extracted and then re-insertedin less than 15 seconds, the insertion may not be properlydetected.

Insert modules on by one. Once a module is inserted, wait for it tostart (check LED status) before inserting the next module.

In case you want to reinsert the module that you have justremoved, wait 15 seconds after extraction to reinsert it.


a Insert an ATM-RM in the shelf. For more information, see4.2.2 “Extraction/Insertion of a module” (page 68), step 4.

b Remove the rubber caps located on the Tx and Rxconnectors of the ATM-RM.

c Reconnect the fiber-optic cables on the ATM-RM accordingto the following instructions:

• left ATM-RM connected to the left ATM-SW

• right ATM-RM connected to the right ATM-SW

• Rx of the ATM-RM connected to the Tx of the relevantATM-SW

• Tx of the ATM-RM connected to the Rx of the relevantATM-SW

• attenuator plugged into the Tx of the ATM-RM

• bottom cable plugged before top cable




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b Next, the red LED and green LED status can change up to 5minutes during module software update and module restart.

c Then, after these 5 minutes, the green LED must blink andthe red LED must remain off. The module is operational. Ifnot, restart the procedure with another module.




--End--


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Figure 27ATM-RM: front panel


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Figure 28ATM-RM: fiber-optic cable plug-in

4.2.8 Replacement of a TRMProduct referenceThe TRM(1), TRM2, and TRM3 boards are RoHS compliant.


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RoHS PEC codes Non-RoHS codes


TRM+ — — NTQE08AD A0790482

TRM2 NTQE08BA A0997877 — —

TRM3 NTQ308DA N0153710 — —


Tools requiredNone.

Impact of the replacement on serviceIn rare cases and on a properly dimensioned TCU, a critical fault on theTRM board may result in some calls being dropped.

Hot extraction of a TRM, faulty or not, has the same impact.

The TRM2 provides a greater capacity than the TRM(1), and the TRM3provides a greater capacity than the TRM2 when a TRM capacity increaselicense has been installed in the host TCU. From a call processing pointof view, however, the three TRM variants are functionally equivalent. Forthis reason, TRM(1), TRM2, and TRM3 modules can coexist in the sameTCUe3 cabinet without any restriction.

CAUTIONBefore replacing a faulty TRM2 by a TRM1 board, check theoverall TCU capacity since it will decrease.

If the TRM capacity increase feature is active for this TCU,replacement of a TRM3 by a TRM1 or TRM2 will also cause adecrease in TCU capacity.

LocationSee Figure 16 "Logical slot numbering with E1 (electrical) configuration ofTCU 3000 cabinet" (page 44).

Procedure

Step Action



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Holding a module by the front panel latches onlycan result in Front panel latch breakage. Once themodule has been pulled half way out of the shelf,carefully grasp the module underneath for moresecure support and continue to remove the modulefrom the shelf.


CAUTIONExtraction/Insertion of a moduleNo module extraction or module insertion must beperformed during Control Node, Interface Node orTranscoder Node startup.


a The OMC has provided you with the shelf number and thelogical slot number of the faulty module. Figure 16 "Logicalslot numbering with E1 (electrical) configuration of TCU 3000cabinet" (page 44) gives the location of this slot.


• green LED off and red LED off: the TRM is not poweredor the module is faulty


• green LED is blinking and red LED off: the TRM ispassive; the module is not faulty

• green LED on and red LED off: the TRM is operational;the module is not faulty

• green LED off and red LED on: the TRM is in alarm state;the module is faulty



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a Extract the TRM. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 3.


Insert modules one by one. Once a module is inserted, wait for itto start (check LED status) before inserting the next module.



ATTENTIONIf you want to reinsert the TRM that you have just removed, wait 15seconds after extraction to reinsert it.

a Insert a TRM. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 4.


a At first, both the green and red LEDs go on for approximately1 minute (during the self-test).

b Next, the red LED and green LED status can change up to 5minutes, during module software update and module restart.

c Then, after these 5 minutes, the green LED must remain onand the red LED must remain off. The module is operational.If not, restart the procedure with another module.




--End--


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Figure 29TRM: front panel

The three TRM boards look identical except for the name printed onthe board. The TRM2 and TRM3 modules are distinguished from theTRM(1) by having the name (TRM2 or TRM3, respectively) printed on thefaceplate.


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4.2.9 Replacement of a TMU moduleProduct reference



TMU(1) module — — NTQE04AA A0733344

TMU2 module NTQE04BA A0997875 — —

TMU3 module NTQ304CA N0195659 — —

ATTENTIONMixed configurations of TMU1 and TMU2, and TMU3 modules are supported.Therefore, a faulty TMU board can be replaced by a different type of board.However, since the capacity depends on the type of board, the overall BSCcapacity must be checked. As a rule, only replace a TMU2 board with anotherTMU2 or TMU3, and replace a TMU3 board only with another TMU3.


Tools requiredNone.

Impact of the replacement on serviceThe redundancy of the TMU modules is (n + p) per dual-shelf. When aTMU module is faulty, the load is shared out among the other (n + p - 1)TMU modules. During this operation, the unstable calls that are processedby the faulty module are lost (calls are unstable during call connection orduring handover).

If you want to remove two TMU modules (P = 2 for example): after theremoving the first TMU module, you have to wait until the end of the trafficre-allocation on the remaining TMU modules before removing the secondTMU module.

In addition to the TMU1 module there is also the TMU2 module whichprovides greater capacity. The new TMU3 module will provide greatercomputing capacity than the previous generation of TMU. The TMU3module can be used as replacement module for previous TMU1 and TMU2modules, providing the same functionality and quality of service. Froma call processing point of view, the TMU2 is functionally equivalent tothe TMU1. For this reason, a mixed TMU1/TMU2 in the same cabinet issupported without any restriction. The TMU2 board and TMU3 are RoHScompliant.


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Procedure

Step Action










• green LED off and red LED off: the TMU module is notpowered or the module is faulty

• green LED on and red LED on: wait until the end ofthe self-test (if any), the BIST is running or terminatedunsuccessfully; if both LEDs still remains on, the TMUmodule is faulty


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• green LED on and red LED off: the TMU module is activeand unlocked; the module is not faulty

• green LED off and red LED on: the TMU module is inalarm state; the module is faulty



a Extract the TMU module. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 3.





a Insert a TMU module. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 4.


a At first, both the green and red LEDs go on forapproximately 5 seconds (during the self-test).

b Then, the red LED goes off and the green LED remains onfor approximately 30 seconds, until all boards in the moduleare locally synchronized.

c Next, both the green and red LEDs go on for approximately45 seconds (during the TMU applications startup).

d After awhile, the red LED goes off and the green LEDremains on. Thus, the module is operational.




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--End--

Figure 30TMU module: front panel


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ATTENTIONThe three generations of TMU board are identical except for the name printedon the board.

4.2.10 Replacement of a CEM or CEM2 or CEM3Product reference



CEM (BSC 3000) NTLX82BB N0100671 NTLX82BA B0256959

CEM (TCU 3000) NTLX82BB N0100671 NTLX82BA B0256959

CEM (TCU 3000) NTQE82BB N0159745 N/A N/A

CEM2 (BSC 3000) NTQE82BC N0145339 N/A N/A

CEM3 NTQE82CA N0195659 N/A N/A

The following table shows which CEM variants are applicable to whichBSC or TCU configuration.

PEC Electrical BSC Optical BSC Electrical TCU Optical TCU

NTLX82BA Y N Y N

NTLX82BB Y N Y N

NTQE82BB N N Y Y

NTQE82BC N Y N N

NTQE82CA N Y N Y

In the following procedure, the term CEM refers to either the CEM orCEM2 or CEM3, unless otherwise stated. A CEM can only replaceanother CEM, and a CEM2 can only replace another CEM2. CEM andCEM2 cannot coexist in the same BSC. CEM3 does not support mixitywith other version of CEM module and only supports optical high capacityconfiguration in BSC and TCU.


Tools requiredNone.


The redundancy of the CEMs is (1 active + 1 passive) per dual-shelf (hotstand-by).


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LocationFor BSC 3000, see Figure 7 "Logical slot numbering with E1 configurationof BSC 3000 cabinet (electrical)" (page 25).

For TCU 3000, see Figure 16 "Logical slot numbering with E1 (electrical)configuration of TCU 3000 cabinet" (page 44).

Procedure

Step Action








a The OMC has provided you with the shelf number and thelogical slot number of the faulty module. Figure 7 "Logicalslot numbering with E1 configuration of BSC 3000 cabinet(electrical)" (page 25) gives the location of this slot in thecase of a BSC 3000. Figure 16 "Logical slot numbering withE1 (electrical) configuration of TCU 3000 cabinet" (page44) gives the location of this slot in the case of a TCU 3000.



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• green LED off and red LED off: the CEM is not poweredor the module is faulty


• green LED is blinking and red LED off: the CEM ispassive; the module is not faulty

• green LED on and red LED off: the CEM is operational;the module is not faulty

• green LED off and red LED on: the CEM is in alarmstate; the module is faulty


3 In order to avoid loss of service, it is important, before extractinga CEM for replacement, to ensure that the other CEM is in anormal active state. This step explains how to double check this,and if necessary, how to safely switch CEM activity before theextraction.Verify CEM switch activity to ensure that passive CEM is readybefore the switchover is done.

a By TML3000Using a RJ45 cross-connect cable, connect the Ethernetboard of the laptop PC (Direct Connection) to the active CEMmodule (fixed green LED).

b Launch the TML3000 application.Note the customization data and particularly, the IP addressand Host name, can be obtained by using the Get DataCustomization command.

c On the TML3000 MMI, you have to first verify the status ofthe (active) CEM. If the TML connection works, the activeCEM is enabled.Run the command Test-Module-Module Status.The passive CEM must be On-line - Hot Standby.The active CEM must be On-line - Providing Service.If the passive CEM is red (failed) or orange (degraded) onthe MMI, replace the board. Otherwise, continue with thenext step.

d Passive CEM resetRight click on the object and run the Reset command.Confirm the request when the warning window appears.After the reset starts, a ’Process in Progress’ window willappear until it is done.The passive CEM must return to On-line - Hot Standby


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status. If not, replace the board. Otherwise, continue withthe next step.

e Active CEM resetRight click on the active CEM object and run the Resetcommand.This will cause a loss of the TML connection (normalbehavior).When you are able to connect TML to the newly active CEM,this means that the SWACT was successful. Allow up to 10minutes for the final states to be visible.Ask the OMC operator to verify that the final states areconsistent with the states specified in step 3C. Continue withthe next step.

f Call processing checksThe aim is to check if calls are OK with the newly active CEMafter the SWACT operation.

• At the OMC

— Check that CIC is busy.Select a pcm A object.Perform a display all command on each xtp object.Repeat for each pcm A object.

— Check that TDMA is busy.Select a TDMA object.Perform a display channel state command.Read the result in the session log to verify that someare busy.

ATTENTIONThe following step does not apply to the CEM2.

4

ATTENTIONThe following step does not apply to the CEM2.

Remove the DS512 fiber optic cables.

If the CEM has DS512 fiber optic cabling to support the BSChigh switching capacity feature, follow the steps in the procedure”Removing and replacing DS512 links for BSC high switchingcapacity” to remove the DS512 fiber links to the 8K-RM beforeproceeding to complete the rest of the CEM replacementprocedure.

Mark the procedure where you finished the removal of all DS512fiber links. You will need to return to this point in the procedurewhen reconnecting the DS512 fiber links.



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a Extract the CEM module. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 3.

CAUTIONVerify that the two yellow plastic rings arecorrectly inserted on the guide of the removedmodule. If the plastic rings are blocked on theback panel, remove them with a clamp beforeinserting the new module.





a Insert a CEM. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step4.

b Do not reconnect the Ethernet link.


a At first, both the green and red LEDs go on for approximately2 minutes (during the self-test).

b Next, the red LED and green LED status can change duringmodule software update and module restart:

• for Interface Node CEM, this state can last up to 18minutes.

• for Transcoder Node, state duration depends on numberAter pcm, and can last from 10 minutes (8 pcmAterspread on 4 LSA) to 1 hour 10 minutes (1 pcmAter).

c Then, the green LED must blink and the red LED mustremain off. The module is operational. If not, restart theprocedure with another module.

d For an electrical BSC 3000, the red LED of the CEM boardswitches on if a new CEM (PEC NTQE82BB) or a new CEM2


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(PEC NTQE82BC) or a new CEM3 (PEC NTQE82CA) isinserted.

8 Connect the Ethernet link cables to the connectors on the frontpanel of the CEM.


a If the CEM had DS512 fiber optic cabling to support the BSChigh switching capacity feature, complete the rest of theprocedure ”Removing and replacing DS512 links for BSChigh switching capacity” to reconnect and test the DS512fiber links (not applicable to CEM2).

b Close the access doors. For more information, see 4.2.1“Opening/Closing of doors” (page 66).


--End--


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Figure 31CEM or CEM2: front panel


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4.2.11 Replacement of an 8K-RMProduct reference



8K-RM NTQE07AG N0055833 NTQE07AA A0737855


Tools requiredNone.


The redundancy of the 8K-RMs is (1 active + 1 passive) per dual-shelf (hotstand-by).


Procedure

Step Action







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• green LED off and red LED off: the 8K-RM is notpowered or the module is faulty


• green LED is blinking and red LED off: the 8K-RM ispassive; the module is not faulty

• green LED on and red LED off: the 8K-RM is operational;the module is not faulty

• green LED off and red LED on: the 8K-RM is in alarmstate; the module is faulty


3 Remove the DS512 fiber optic cables.

If the 8K-RM has DS512 fiber optic cabling to support the BSChigh switching capacity feature, follow the steps in the procedure”Removing and replacing DS512 links for BSC high switchingcapacity” to remove the DS512 fiber links to the CEM beforeproceeding to complete the rest of the 8K-RM replacementprocedure.

Mark the procedure where you finished the removal of all DS512fiber links. You will need to return to this point in the procedurewhen reconnecting the DS512 fiber links.


a Extract the 8K-RM. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 3.


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a Insert an 8K-RM. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 4.




c Then, after these five minutes, the green LED must blink andthe red LED must remain off. The module is operational. Ifnot, restart the procedure with another module.


a If the 8K-RM had DS512 fiber optic cabling to support theBSC high switching capacity feature, complete the rest of theprocedure “Removing and replacing DS512 links for BSChigh switching capacity” to reconnect and test the DS512fiber links.

b Close the access doors. For more information, see 4.2.1“Opening/Closing of doors” (page 66).


--End--


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Figure 328K-RM: front panel


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4.2.12 Replacement of an IOMProduct reference



IOM (STM-1/OC-3 combo) NTQE71BA N0145334 — —


Tools requiredNone.


Within a High Speed Access Resource complex (HSA-RC) there are twoIOM in 1+1 redundancy.

ATTENTIONBefore removing an IOM (see the following procedure), check that the otherfiber-link is operational (in order to avoid disruption of the PCM links carried bythis module).

LocationFor BSC installations that use E1 trunking, see Figure 9 "Logical slotnumbering with E1 configuration of BSC 3000 cabinet (optical)" (page 29).

For BSC installations that use T1 trunking, see Figure 10 "Logical slotnumbering with T1 configuration of BSC 3000 cabinet (optical)" (page 31).

For all TCU installations, see Figure 18 "Logical slot numbering with opticalconfiguration of TCU 3000 cabinet (E1 and T1)" (page 48).

Procedure

Step Action




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CAUTIONExtraction/Insertion of a moduleNo module extraction or insertion must be performedduring Control Node, Interface Node, or TranscoderNode startup.


a The OMC has provided you with the shelf number and thelogical slot number of the faulty module.

See:

• Figure 9 "Logical slot numbering with E1 configuration ofBSC 3000 cabinet (optical)" (page 29)

• Figure 18 "Logical slot numbering with opticalconfiguration of TCU 3000 cabinet (E1 and T1)" (page 48)



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• green LED off and red LED off: the IOM is not poweredor the module is faulty


• green LED is blinking and red LED off: the IOM ispassive; the module is not faulty

• green LED on and red LED off: the IOM is operational;the module is not faulty

• green LED off and red LED on: the IOM is in alarm state;the module is faulty

If you are replacing a single IOM, for example, replacing adefective module, make sure you have correctly identified thedefective module.

If you are replacing an entire HSA-RC, begin with the passiveIOM. Make sure that you correctly identify the IOM that is inthe passive state.








c Disconnect the top cable from the IOM. For more information,see Figure 34 "IOM: fiber-optic cable plug-in" (page 128).After the cable has been removed, cap the connector on


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the IOM (rubber cap) in order to protect the plug. Store thefiber-optic cable in the cable trough.

d Disconnect the bottom cable from the IOM. For moreinformation, see Figure 34 "IOM: fiber-optic cable plug-in"(page 128). After the cable have been removed, cap theconnector on the IOM (rubber cap) in order to protect theplug. Store the fiber-optic cable in the cable trough.

ATTENTIONBefore removing the IOM, ensure that the fiber-optic cables arestored below the bottom level of the module shelf to avoid cabledamage when the module is removed.

e Extract the IOM. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 3.

ATTENTIONA wait of 15 seconds is required due to software and hardwarereaction time between successive plug and play actions on thesame Interface Node, even if different boards are involved. Forexample, if a board is extracted and then re-inserted in less than15 seconds, the insertion may not be properly detected.

Insert modules on by one. Once a module is inserted, wait for it tostart (check LED status) before inserting the next module.



a Insert an IOM in the shelf. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 4.

b Remove the rubber caps located on the Tx and Rxconnectors of the IOM.

c Reconnect the fiber-optic cables on the IOM, plugging thebottom cable first and the top cable second.






6 If replacement of the other IOM is also necessary, use theOMC-R or the TML to activate the newly inserted IOM. Confirm


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that the green LED of the newly inserted IOM is on and the redLED is off. Then go to Step 2.




--End--


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Figure 33IOM: front panel


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Figure 34IOM: fiber-optic cable plug-in


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4.2.13 Replacement of an IGMProduct reference



IGM NTQ372AA N0175055 — —


Tools requiredNone.


An Internet Protocol Gateway (IPG) resource complex consists of two IGMin 1+1 redundancy.

ATTENTIONBefore removing an IGM (see the following procedure), check that the Ethernetconnection on the other IGM is operational (in order to avoid disruption of thePCM links carried by this module).

LocationFor BSC installations that use E1 trunking, see Figure 11 "Logicalslot numbering with E1 configuration of BSC 3000 cabinet (electrical,IP-enabled)" (page 33) or Logical slot numbering with E1 configuration ofBSC 3000 cabinet (optical, IP-enabled).

For BSC installations that use T1 trunking, see Figure 12 "Logicalslot numbering with T1 configuration of BSC 3000 cabinet (electrical,IP-enabled)" (page 35) or Logical slot numbering with T1 configuration ofBSC 3000 cabinet (optical, IP-enabled).

Procedure

Step Action




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CAUTIONExtraction/Insertion of a moduleNo module extraction or insertion must be performedduring Control Node, Interface Node, or TranscoderNode startup.


a The OMC has provided you with the shelf number and thelogical slot number of the faulty module.


• green LED off and red LED off: the IGM is not poweredor the module is faulty


• green LED is blinking and red LED off: the IGM ispassive; the module is not faulty


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• green LED on and red LED off: the IGM is operational;the module is not faulty

• green LED off and red LED on: the IGM is in alarm state;the module is faulty

If you are replacing a single IGM, for example, replacing adefective module, make sure you have correctly identified thedefective module.

If you are replacing both IGM units in a shelf, begin with thepassive IGM. Make sure that you correctly identify the IOMthat is in the passive state.




b Label the fiber-optic cables for the optional link to theHSA-RC. Use transmit for the top cable and receivefor the next cable. For more information, see Figure 35"Interconnection between IPG-RC and HSA-RC" (page 134)

Label the fiber-optic cables for the gigabit Ethernet links forAbis and for aggregation traffic if present




c Disconnect the top cable from the IGM, if present. After thecable has been removed, cap the connector on the IGM(rubber cap) in order to protect the plug. Store the fiber-opticcable in the cable trough.

d Disconnect the second cable from the IGM, if present. Afterthe cable has been removed, cap the connector on the IGM(rubber cap) in order to protect the plug. Store the fiber-opticcable in the cable trough.


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e Disconnect the cable from the upper gigabit Ethernet port.After the cable has been removed, cap the connector onthe IGM (rubber cap) in order to protect the plug. Store thefiber-optic cable in the cable trough.

f Disconnect the cable from the lower gigabit Ethernet port,if it is present. After the cable has been removed, cap theconnector on the IGM (rubber cap) in order to protect theplug. Store the cable (fiber-optic cable) in the cable trough.

ATTENTIONBefore removing the IGM, ensure that the fiber-optic cables arestored below the bottom level of the module shelf to avoid cabledamage when the module is removed.

g Disconnect the RJ-45 Ethernet cable from the upper RJ-45port. Secure the unplugged end of the cable away from thework area.

h Extract the IGM. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 3.

ATTENTIONA wait of 15 seconds is required due to software and hardwarereaction time between successive plug and play actions on thesame Interface Node, even if different boards are involved. Forexample, if a board is extracted and then re-inserted in less than15 seconds, the insertion may not be properly detected.

Insert modules one by one. Once a module is inserted, wait for itto start (check LED status) before inserting the next module.



a Insert an IGM in the shelf. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 4.

b Reconnect the RJ-45 Ethernet cable to the second port fromthe bottom.

c Remove the rubber caps located on the Tx and Rxconnectors of the IGM (first two ports from the top) and fromthe gigabit Ethernet ports.

d Reconnect the gigabit Ethernet cable for aggregation traffic (ifused) to the lower gigabit Ethernet port.

e Reconnect the gigabit Ethernet cable for the Abis traffic to theupper gigabit Ethernet port.

f Reconnect the fiber-optic cables of the IGM to the first twooptical ports for the optional HSA-RC, plugging the lowercable (receive) first and the top cable (transmit) second. For


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more information, see Figure 35 "Interconnection betweenIPG-RC and HSA-RC" (page 134)

g Close the cable trough door.





6 If replacement of the other IGM is also necessary, use theOMC-R or the TML to activate the newly inserted IGM. Confirmthat the green LED of the newly inserted IGM is on and the redLED is off. Then go to Step 2.




--End--


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Figure 35Interconnection between IPG-RC and HSA-RC

4.2.14 Replacement of an IEMProduct reference



IEM1 (E1) — — NTLX89AA B0248548

IEM2 (E1) NTLX89AB N0022765 — —

IEM1 (T1) — — NTLX89DA B0249507

IEM2 (T1) NTLX89DB N0027680 — —


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ATTENTIONMixed configurations of IEM1 and IEM2 modules are allowed on the same shelf.An LSA may be equipped with two IEM1 modules, with two IEM2 modules, orwith one IEM1 module and one IEM2 module.

Intervention timeThe intervention time for the replacement and the service is approximately10 minutes.

Tools requiredNone.


The redundancy of the IEMs is (1 active +1 passive).

ATTENTIONThe node is synchronized on LSA 0. Simultaneous extraction of both IEMs 0results in a loss of external synchronization and the loss of impacted PCM. Forthe other LSA complex, the simultaneous extraction of both IEMs results in aloss of all the impacted PCM.



Procedure

Step Action




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b If fault number 2032 with manufacturer info fields iemlsa_cnshas been emitted on the faulty IEM board, then both IEMslocated in the LSA complex are declared faulty. Replacementis not required. Cables from the CTU are not plugged intothe 62 pin connector of the TIM properly. Verify connectionbetween cables and the boards. Reset connector as needed.

c Without opening the doors, check the status of the LEDslocated on the top of the front panel of the module:

• green LED off and red LED off: the IEM is not poweredor the module is faulty


• green LED is blinking and red LED off: the IEM ispassive; the module is not faulty


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• green LED on and red LED off: the IEM is operational;the module is not faulty

• green LED off and red LED on: the IEM is in alarm state;the module is faulty

d Open the access doors of the relevant shelf. For moreinformation, see 4.2.1 “Opening/Closing of doors” (page 66).

e Ensure that the SPAN# LEDs device displays:

• Blank on the inactive IEM

• the faulty span number on the active IEM (numbered from1 to 21)

• XX on the active IEM when there is a problem with thecopper connection between the IEM and the CTB

• OK on the active IEM when there are no signal failures(LOS, AIS, LOF or LFA, RAI) on the spans

ATTENTIONThe state of the SPAN# display allows you to determine whichIEM is active and which is on standby.

f Check the IEM front panel that also includes visual indicatorsfor giving the highest severity signal failure of the span thatis displayed:

• LOS - Loss of signal: this alarm appears when there is notransition on the incoming signal

• AIS - Alarm Indication Signal: this alarm appears whenthe incoming signal is unframed

• LFA for E1 or LOF for T1 - Loss of signal frame alignmentappears on the third consecutive error of the alignmentsignals; it also appears on the third error of the bit 2 ofTS0 in frames that are not containing alignment signals

• RAI - Remote Alarm indication

g Check the state of the following devices on the IEM frontpanel:

• Multiple span alarm: This LED blinks when one (or more)spans is faulty

• UP and DOWN arrow keys: by pressing these keys, theoperator displays the state of the next (UP) or previous(DOWN) faulty span. For each faulty span, the PCMnumber and the failure cause are displayed



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a Extract the IEM. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 3.





a Insert an IEM. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step4.

5 Checking the status of the LEDs located at the top of the module







--End--


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Figure 36IEM: front panel


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4.2.15 Replacement of a TIMProduct reference



TIM NTLX92AG N0096175 NTLX92AA B0249097


Tools requiredNone.

Impact of the replacement on serviceLoss of service for all the PCM linked to the LSA complex associated tothe TIM board.

ATTENTIONThe node is synchronized on LSA 0. Due to replacement operation, the loss ofthe traffic that is routed by this LSA results in a loss of external synchronization.



Procedure

Step Action




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2 Preliminary operations.

a The OMC has provided you with the shelf number and thelogical slot number of the faulty module. Figure 7 "Logicalslot numbering with E1 configuration of BSC 3000 cabinet(electrical)" (page 25) gives the location of this slot for a BSC3000. Figure 16 "Logical slot numbering with E1 (electrical)configuration of TCU 3000 cabinet" (page 44) gives thelocation of this slot for a TCU 3000.

b Without opening the doors, check the status of the LEDslocated on the top of the front panel of the module:

• green LED off and red LED off: the TIM is not poweredor the module is faulty

• green LED on and red LED on: wait until the end ofthe self-test (if any), the BIST is running or terminatedunsuccessfully (except MMS module); if both LEDs remainon, the module is faulty

• green LED is blinking and red LED off: the TIM ispassive; the module is not faulty

• green LED on and red LED off: the TIM is operational;the module is not faulty

• green LED off and red LED on: the TIM is in alarm state;the module is faulty.


3 Extraction of all the modules (IEM + TIM).


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a Disconnect the TIM Tx cable and the TIM Rx cable from thefront panel of the TIM. For more information, see Figure 37"BSC 3000: TIM location" (page 144) and Figure 38 "TCU3000: TIM location" (page 145).

4 Extraction of both IEMs.

a Extract the (TIM + RCM) assembly. For more information,see 4.2.2 “Extraction/Insertion of a module” (page 68), step 3.

b Dismantle the TIM from the RCM by unscrewing it.




5 Insertion of the spare part.

a Assemble the new TIM with the old RCM, by screwing it.

b Insert the (TIM + RCM) assembly. For more information, see4.2.2 “Extraction/Insertion of a module” (page 68), step 4.

6 Insertion of both IEMs.

a Route the TIM Tx cable through the frame. For moreinformation, see Figure 37 "BSC 3000: TIM location" (page144) and Figure 38 "TCU 3000: TIM location" (page 145).Then, connect the TIM Tx cable to the upper connector of thefront panel of the TIM.

b Route the TIM Rx cable through the frame. For moreinformation, see Figure 37 "BSC 3000: TIM location" (page144) and Figure 38 "TCU 3000: TIM location" (page 145).Then, connect the TIM Rx cable to the lower connector of thefront panel of the TIM.

7 Checking the status of the LEDs located at the top of themodule.

a At first, both green and red LEDs go on (during the self-test).

b After awhile, the red LED goes off and the green LEDremains on. Thus, the module is operational.


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8 Additional operations.



--End--


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Figure 37BSC 3000: TIM location


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Figure 38TCU 3000: TIM location


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Figure 39TIM: front panel


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4.2.16 Replacement of an RCM + Tx cable + Rx cable + CTUProduct reference



RCM — — — —

TIM Tx cable NTLX96CAE6 N0093477 NTLX96CA B0251738

TIM Rx cable NTLX96BAE6 N0093476 NTLX96BA B0251557

CTU - PCM30 coax 1 (75 ohmsfor E1)

NTQ384DA N0110453 NTLX93CA B0254230

CTU - PCM DS1 1 (100 ohms forT1)

NTQ384FA N0110455 NTLX93DA B0253908

CTU - PCM30 pair 1 (120 ohmsfor E1)

NTQ384EA N0110454 NTLX93EA B0254231



Impact of the replacement on serviceDuring this procedure, all the links that are routed through this CTU areinterrupted.

ATTENTIONThe node is synchronized on the LSA 0. Due to replacement operation, theloss of the traffic which is routed by this LSA results in a loss of externalsynchronization.



Procedure

Step Action



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2 Preliminary operations.

a The OMC has provided you with the shelf number and thelogical slot numbers of the faulty LSA module. Figure 7"Logical slot numbering with E1 configuration of BSC 3000cabinet (electrical)" (page 25) gives the location of theseslots for a BSC 3000. Figure 16 "Logical slot numbering withE1 (electrical) configuration of TCU 3000 cabinet" (page44) gives the location of these slots for a TCU 3000.

b Open the access doors of the relevant shelf. For moreinformation, see 4.2.1 “Opening/Closing of doors” (page 66).

3 Extraction of the IEMs.

a Extract the first IEM. For more information, see 4.2.14“Replacement of an IEM” (page 134).

b Extract the second IEM. For more information, see 4.2.14“Replacement of an IEM” (page 134).

4 Extraction of the TIM.

a Disconnect the TIM Tx cable and the TIM Rx cable from thefront panel of the TIM. For more information, see Figure 40"BSC 3000: PCM cabling" (page 152) and Figure 41 "TCU3000: PCM cabling" (page 153).

b Extract the (TIM + RCM) assembly from the shelf. For moreinformation, see 4.2.2 “Extraction/Insertion of a module”(page 68), step 3.

ATTENTIONThe TIM remains plugged in the RCM during the extraction.For more information, see Figure 42 "LSA-RC: layout of thesubassemblies" (page 154).


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c Dismantle the TIM from the RCM by unscrewing it.

5 Removal of the relevant CTU module. For more information, seeFigure 7 "Logical slot numbering with E1 configuration of BSC3000 cabinet (electrical)" (page 25) (BSC 3000) or Figure 16"Logical slot numbering with E1 (electrical) configuration of TCU3000 cabinet" (page 44) (TCU 3000).

a Locate the relevant CTU module (The CTU that is connectedto the unplugged TIM Tx and TIM Rx cable).

b Disconnect the TIM Tx cable and the TIM Rx cable from theCTU module (right hand, two screws for each connector). Formore information, see Figure 44 "CTU module: right sideview" (page 156).

c Identify and clearly label the seven cables that provide theexternal PCM links (from 1 for the top CTMx cable to 7 for thebottom CTMx cable). For more information, see Figure 45"CTU module: left side view" (page 157).

d Disconnect the seven external PCM cables from the CTU(two screws for each connector).

e Remove the CTU module (two number 1 screws). For moreinformation, see Figure 44 "CTU module: right side view"(page 156).

6 Installation of a new CTU module

a Install the new CTU module (two no. 1 screws). For moreinformation, see Figure 44 "CTU module: right side view"(page 156).

b Connect the seven external PCM cables to the CTMxmodules in accordance with the labels (two screws for eachconnector).

c Connect the TIM Tx cable to the CTU module (right side,upper connector, two locking screws).

d Connect the TIM Rx cable to the CTU module (right side,lower connector, two locking screws).

e Check the position of the switches located on the front panelof each new CTMx module; all the switches have to be OFF.

ATTENTIONThe switch is black when OFF (normal operation) and green whenON (loopback).

7 Insertion of the TIM

a Assemble the TIM with the new RCM by screwing it.

b Insert the (TIM + RCM) assembly in the shelf. For moreinformation, see 4.2.2 “Extraction/Insertion of a module”(page 68), step 4.


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c Route the TIM Tx cable through the frame. For moreinformation, see Figure 40 "BSC 3000: PCM cabling" (page152) and Figure 41 "TCU 3000: PCM cabling" (page 153).Then, connect the TIM Tx cable to the upper connector of thefront panel of the TIM.

d Route the TIM Rx cable through the frame. For moreinformation, see Figure 40 "BSC 3000: PCM cabling" (page152) and Figure 41 "TCU 3000: PCM cabling" (page 153).Then, connect the TIM Rx cable to the lower connector of thefront panel of the TIM.

8 Insertion of the first IEM

a Insert an IEM beside the TIM. For more information, see4.2.2 “Extraction/Insertion of a module” (page 68), step 4.

9 Checking the status of the LEDs located at the top of the firstIEM



10 Checking the state of the digital display located on the first IEM

a The first inserted IEM is active. So, the SPAN# LEDs devicedisplays OK if there are no signal failures on the spans.

b Ensure that the SPAN# LEDs device of the active IEMdisplays:

• the faulty span number

• XX when there is a problem with the copper connectionbetween the IEM and the CTB

• OK when there are no signal failures (LOS, AIS, LOF orLFA, RAI) on the spans

11 Insertion of the second IEM

a Insert the other IEM beside the TIM. For more information,see 4.2.2 “Extraction/Insertion of a module” (page 68), step 4.

12 Checking the status of the LEDs located at the top of the secondIEM



13 Checking the state of the digital display located on the secondIEM

a The second inserted IEM is passive. So, the ’SPAN#’ LEDsdevice displays ’Blank’.


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14 Creation of the LSA-RC module with respect to the OMC-R

a The OMC-R operator creates the LSA-RC module withrespect to the OMC-R.




--End--


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Figure 40BSC 3000: PCM cabling


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Figure 41TCU 3000: PCM cabling


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Figure 42LSA-RC: layout of the subassemblies


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Figure 43LSA-RC: front panel


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Figure 44CTU module: right side view


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Figure 45CTU module: left side view


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4.2.17 Replacement of a SIMProduct reference



SIM NTLX61AB N0100669 NTLX61AA B0243508




The SIMs are redundant: each one is able to provide power supply for allthe modules (both shelves) of the node (CN, or IN, or TCU).



Procedure

Step Action




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b Without opening the doors, check the status of the LEDslocated on the top of the front panel of the module:

• green LED off and red LED off: the SIM is not poweredor the module is faulty

• green LED off and red LED on: the SIM is in alarm state;the module is turned off or the module is faulty

• green LED off and red LED on and yellow LED on: thefront panel cable is disconnected or faulty

• green LED on and red LED off: the SIM is operational;the module is not faulty



a Set the power switch, which is located on the front panelof the SIM to the ’O’ position (OFF). For more information,see Figure 46 "SIM: front panel" (page 161); the four LEDslocated on the front panel of the SIM go on. Wait 15 secondsbefore performing the next step.


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See the following precautions:

DANGERPower dissipationAfter setting the SIM power switch to OFF, wait atleast 15 seconds for the power to dissipate beforedisconnecting the power cable.

CAUTIONEquipment damageElectrical short: equipment damage can resultif the exposed pins of the SIM power-cableconnector come into contact with metal surfaces.Tie-off or cap the cable connector when it isremoved from the SIM.

b Remove the cable connector located on the front panel ofthe SIM:

• unscrew the two screws of the connector with ascrewdriver

• unplug the connector

• cap and tie-off the cable connector

c Extract the SIM. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 3.


a Take a SIM and ensure that the switch located on its frontpanel is in the ’O’ position.

b Insert the SIM. For more information, see 4.2.2“Extraction/Insertion of a module” (page 68), step 4. Afterinsertion, red LED is on and yellow LED is on.

c Replace the power cable:

• release and uncover the power cable connector

• plug it into the connector located on the front panel of themodule; after plug, red LED is on and yellow LED is off

• lock it by tightening the two securing screws with ascrewdriver

d Set the power switch located on the front panel of the SIM tothe ’I’ position (ON); the four LEDs located on the front panelof the SIM go off.




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--End--

Figure 46SIM: front panel


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4.2.18 Remove/Install the PCIU coverIntervention timeThe intervention time is approximately five minutes.


Impact on serviceNone.



Procedure

Step Action




a Locate the shelf to open into the relevant frame.

3 Removing the access cover

a Unlock the PCIU cover:

• Turn the lock latches one quarter turn counter clockwise.For more information, see Figure 47 "Remove/Install thePCIU cover" (page 164).

• Check that each lock latch is in the unlocked position asindicated on the cover.

b Remove the PCIU cover:

• Carefully pull the cover toward you using the finger gripat the bottom of the cover.

c Lift the cover of the PCIU shelf to gain access to themodules.


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4 Installing the access cover

a Lower the cover into this position on the PCIU shelf.

b Move the lock latches by turning them one quarter turnclockwise.

c Lock each latch to the locked position, as indicated on thecover. The cover is locked when the slot in the locking screwis in the horizontal position.


--End--


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Figure 47Remove/Install the PCIU cover


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4.2.19 Replacement of the ALM card assemblyProduct reference



Alarm card assembly NTLX58AG N0088730 NTLX58AA B0243502






Procedure

Step Action



CAUTIONEquipment damageHolding a card by the printed circuit only may resultin card breakage. To remove the card of the pack,carefully grasping the card by using the faceplateedges.

Avoid touching any wires or internal parts of the card.


a Check the status of the frame summary indicator lamp that islocated on the median part of the PCIU cover:


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• amber lamp off: the PCIU shelf is operational; there is noactive alarm source in the frame

• amber lamp on: the PCIU shelf is in alarm state; there isan active alarm source in the frame

b Remove the cover of the relevant PCIU shelf. For moreinformation, see 4.2.18 “Remove/Install the PCIU cover”(page 162).

c check the status of the LEDs located on the front of the ALMfaceplate:

• green LED off and red LED off: the ALM card is notpowered (total power failure); the module is faulty

• green LED on and red LED on: wait until the end of thetest, the test is running or terminated unsuccessfully; ifboth LEDs still remains on, the module is faulty

• green LED on and red LED off: the ALM card isoperational; the module is not faulty

• green LED off and red LED on: the ALM card is in alarmstate; the module is faulty

3 Extraction of the ALM card

a Unscrew the thumbscrew on the front of the module. Formore information, see Figure 48 "PCIU: front view withoutcover" (page 168).

b Plug out the module from the back panel connector of thepack.

c Remove the module from the shelf by using the right and leftedges of the module faceplate.This may require rocking the module slightly from side toside.

ATTENTIONWhen pack is removed, the green LEDs on all the fan units will goout, but does not impact the operation of the fans.

d Place the module in an electrostatic discharge (ESD)protective cover.

4 Insertion of the ALM card

ATTENTIONIf you want to reinsert the ALM card that you have just removed, wait15 seconds after extraction to reinsert it.


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CAUTIONUse a replacement module with the same PEC codeto avoid equipment malfunction.

a Insert the replacement module on the slot into the shelf.

b Make a clean, direct insertion, and be sure to fully seat themodule into the backpanel connector.

ATTENTIONDo not rely on the thumb screw to seat the module.

c Tighten the thumb screw.

5 Checking the status of the LEDs and indicator lamp once thepack is inserted

a At first, both green LEDs on the fan units go on and theamber lamp on the cover of the PCIU goes on temporarily.

b Then, the green LEDs go on and the amber lamp goes out.Thus, the module is operational.


a Install the cover of the PCIU shelf. For more information, see4.2.18 “Remove/Install the PCIU cover” (page 162).


--End--


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Figure 48PCIU: front view without cover


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Figure 49ALM card: faceplate


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4.2.20 Replacement of a FMU moduleProduct reference

RoHS codes Non-RoHS PEC codes


Fan Management Unitmodule

NTLX59AG N0088731 NTLX59AA B0243504



Impact of the replacement on serviceNone.The redundancy of the FMU modules is (1 active + 1 passive) hotstand-by.



Procedure

Step Action



CAUTIONEquipment damageHolding a module by the printed circuit only mayresult in module breakage. To remove the module ofthis slot, carefully grasping the module by using thefaceplate edges.



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a Check the state of the frame summary indicator lamp that islocated on the median part of the PCIU cover:

• amber lamp off: the PCIU shelf is operational; there is noactive alarm source in the frame

• amber lamp on: the PCIU shelf is in alarm state; there isan active alarm source in the frame

b Remove the cover of the relevant PCIU shelf. For moreinformation, see 4.2.18 “Remove/Install the PCIU cover”(page 162).

c Locate the defective FMU module.

d check the status of the LEDs located on the front of the FMUfaceplate:

• green LED off and red LED off: the FMU module is notpowered; the module is faulty

• green LED on and red LED on: wait until the end of thetest, the test is running or terminated unsuccessfully; ifboth LEDs still remains on, the module is faulty

• green LED on and red LED off: the FMU module isoperational; the module is not faulty

• green LED off and red LED on: the FMU module is inalarm state; the module is faulty

3 Switch off the fan units

DANGERElectric shockIf these fans are not powered down, they will try toconduct current when the new module is inserted,resulting in possible sparks and damage to the newmodule.

a Unlock the fan units by turning the locking screw onehalf-turn counter clockwise on each of the eight fan units.For more information, see Figure 51 "Fan unit: front panel"(page 175). The unlocked position is this one indicated onthe faceplate of the fans.

b Unlatch the fan units:

• place your hand into the faceplate handle of the fans

• reaching inside the faceplate depress the latchmechanism. For more information, see Figure 51 "Fanunit: front panel" (page 175).

c Unseat the fan units:


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• pull fan units toward you and slide them out a few inchesto unseat them from the cooling units in shelf positionsXX and YY.

• wait two to three minutes to allow the fan blades to cometo a complete stop

DANGERPersonnel safety rulesTo avoid injury, wait until the fan stop spinningbefore you handle the fan units.

d Completely remove the two fan units from the upper coolingunit frame, directly below the FMU modules.

4 Extraction of a FMU module

a Unscrew the thumbscrew on the front of the appropriatemodule. For more information, see Figure 51 "Fan unit: frontpanel" (page 175).

b Unplug the module from the back panel connector of thepack.

c Remove the module from the shelf by using the right and leftedges of the module faceplate.

d Place the module in an electrostatic discharge (ESD)protective cover.

5 Insertion of a FMU module

CAUTIONUse a replacement module with the same PEC codeto avoid equipment malfunction.

a Insert the new module on the slot into the shelf and align itwith the module guides.

b Make a clean, direct insertion, and be sure to fully seat themodule into the back panel connector.

ATTENTIONDo not rely on the thumb screw to seat the module.

c Tighten the thumb screw.

6 Switch on the fan units

a re-insert the two fan units removed into the cooling unitframe by:


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• holding onto the faceplate of the fan in one hand

• and folding the fan assembly flat (align with the bar onthe fan unit)

• then inserting them into the slot of the cooling unit

b Once fan starts sliding into the slot of the cooling unit,release the fan and allow it to return to its upright position.

c Pushing on the faceplate of the fan units, carefully re-seatthem into the cooling units in shelf positions XX and YY.

7 Checking the status of the LEDs. For more information, seeFigure 51 "Fan unit: front panel" (page 175).

a Ensure that the green LEDs on the faceplate of the fan unitsgo on and the fan are running.

8 Locking of the fan assembly

a Turn the locking screw on the fan units one half-turnclockwise to lock the fan assembly. For more information,see Figure 51 "Fan unit: front panel" (page 175)

The unlocked position is this one indicated on the faceplateof the fans.


a Install the cover of the PCIU shelf. For more information, see4.2.18 “Remove/Install the PCIU cover” (page 162).


--End--


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Figure 50PCIU: front view


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Figure 51Fan unit: front panel


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Figure 52FMU: front view


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4.2.21 Replacement of a FAN unitProduct reference


Equipment PEC PEC PEC CPC

FAN unit NTLX56AG N0088723 NTLX56AA B0243497



Impact of the replacement on serviceNone. The dual-shelf assembly is still operational when only three fansare operational.

CAUTIONEquipment damage due to empty fan slotsAll fan slots must be equipped with fan unit assemblies tomaintain electromagnetic interference (EMI) integrity and tomaintain shelf airflow patterns that ensure proper cooling.



Procedure

Step Action


DANGERPersonnel safety rulesTo avoid injury, wait until the fan stops spinningbefore you remove the fan assembly.



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a The OMC has given to you the shelf number and the logicalslot number of the faulty module. Figure 7 "Logical slotnumbering with E1 configuration of BSC 3000 cabinet(electrical)" (page 25) gives the location of this slot for a BSC3000. Figure 16 "Logical slot numbering with E1 (electrical)configuration of TCU 3000 cabinet" (page 44) gives thelocation of this slot for a TCU 3000.

b check the status of the LEDs located on the front panel of thefan unit. For more information, see Figure 53 "Fan unit: frontpanel" (page 179):

• green LED off and red LED off: the fan unit is notpowered; the module is faulty

• green LED on and red LED on: wait until the end of theself-test (if any); if both LEDs still remains on, the moduleis faulty

• green LED on and red LED off: the fan unit isoperational; the module is not faulty

• green LED off and red LED on: the module is faulty


DANGERPersonnel safety rulesTo avoid injury, wait until the fan stops spinningbefore you remove the fan assembly.

a Unlock the fan assembly by turning the locking screw onehalf-turn counter clockwise. For more information, see Figure53 "Fan unit: front panel" (page 179).

b Unlatch the fan assembly:

• place your hand into the front panel handle of the fan

• squeeze the latch mechanism. For more information, seeFigure 53 "Fan unit: front panel" (page 179)

c Unseat the fan assembly:

• pull it toward you until the handle is clear of thecooling-unit frame

• WAIT UNTIL THE FAN STOPS SPINNING

d Remove the faulty fan unit from the cooling unit frame.

4 Insertion of the spare part (immediately after the extraction of thefaulty fan unit)


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a Rotate the fan to the horizontal position. For moreinformation, see Figure 54 "Fan unit: insertion in the frame"(page 180).

b Insert the fan unit into the cooling unit frame. For moreinformation, see Figure 54 "Fan unit: insertion in the frame"(page 180).

c Push the fan assembly into the frame until it latches.

5 Checking the status of the LEDs. For more information, seeFigure 53 "Fan unit: front panel" (page 179)

a If the green LED goes on and the red LED remains off, thenew fan unit is operational; go to the next step. Otherwise,contact the next level of support.

6 Locking the fan assembly

a Turn the locking screw one half-turn clockwise to lock the fanassembly. For more information, see Figure 53 "Fan unit:front panel" (page 179).


--End--

Figure 53Fan unit: front panel


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Figure 54Fan unit: insertion in the frame


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4.2.22 Replacement of an air filterProduct reference

RoHS PEC codes Non-RoHS PEC codes


Air filter NTLX5045 N0088713 NTLX5015 A0665487

Intervention timeThe intervention time is approximately five minutes.

Tools requiredNone.


LocationFigure 55 "Location of the upper and lower air filters" (page 182)

Procedure

Step Action


a Locate the upper and lower air filters. For more information,see Figure 55 "Location of the upper and lower air filters"(page 182).

2 Removal of the air filter

a Lightly press on the center of the filter tray assembly todisengage it.

b Slide the filter tray assembly from the unit.

c Lift the air filter out of the filter tray assembly and discard theused air filter.

d Immediately insert a new air filter into the filter tray assembly.

e Slide the filter tray assembly, with the new air filter, back intothe unit.


--End--


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Figure 55Location of the upper and lower air filters


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4.2.23 Removal of a PCIUProduct reference



Power Cabling Interface Unit(PCIU)


Step Action

1 The BSC must be powered off, with all the breakers off, includingthe ABS feeder

2 Open the PCIU cover

3 Remove the plastic protection in front of the power supply feeder

4 Disconnect the 4 -48 VDC feeders

5 Disconnect the 4 0V DC feeder

6 Disconnect the ABS feeder

7 Remove the ALM modules

8 Remove the both FMU modules

9 Behind the ALM module, remove the J6, J7, J8, J9 connectors

10 At the right of the PCIU module, all the connectors must beremoved. There are 6 connectors P3, P4, P6, P8, P9, P11.

11 P3 and P4 power supply the fan; P6, P8, P9, P11 power supplythe SIM boards

12 Remove the two fuses F1 and F2

13 Remove the four bolts Diam 10 which fix the PCIU to the frame

14 Remove the PCIU rack

15 The procedure is complete

--End--

4.2.24 Installation of a PCIUProduct reference



Power Cabling InterfaceUnit (PCIU)



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Step Action

1 Place the PCIU rack in the top of the frame

2 Replace the 4 bolts and tighten them

3 Replace the fuses F1 and F2

4 Replace the 6 connectors P3, P4, P6, P8, P9, P11

5 Replace the J6, J7, J8, J9 connectors

6 Replace the 2 FMU modules

7 Replace the ALM module

8 Reconnect the ABS feeder

9 Reconnect the four 0V DC feeders

10 Reconnect the four -48 V DC feeders

11 Place the plastic protection in front of the power supply feeder

12 Close the PCIU cover

13 Now power on the breaker


--End--


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Figure 56Connector distribution


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Figure 57Power supply feeder arrival

4.2.25 Installing DS512 links for high switching capacityUse this procedure to connect and activate new DS512 fiber optic linksbetween the 8K-RM and CEM in the interface node of the BSC 3000, inorder to activate the BSC high switching capacity feature.

This procedure applies only to the electrical BSC configuration.

Product reference



CEM to 8K-RM DS512 Link Kit NTQ343BA N0055834 NTQE43BA A0540120

Installation and commissioningThis solution does not require additional hardware except DS512 links.


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DS512 links are plug and play and hence can be inserted while the BSC3000 is online.

CEM and 8K-RM modules have 4 ports labelled from 1 (bottom) to 4 (top).Each fiber is connected as described in the following schematic diagram:

Figure 58DS512 links are plugged in front of the BSC 3000 Interface Node

A test is available on the interface node to test the DS512 data path, andcan be run from the TML. The name for this test is CEM/8K-RM DS512Link Test, and it is available from the Test / Link / CEM menu of the TML.

Preconditions Before installing DS512 fiber links between the CEM and8K-RM, verify the following:

• The BSC is at the BSS 15.0 software release level, or later

• All modules are correctly positioned and seated in the shelves

• No shelf or module in the interface node has an LED display thatindicates a hardware, software, or operational fault


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CAUTIONUnintended SWACT may cause service interruptionOMC-R for this BSC, connection of the DS512 link to thepassive 8K-RM may cause a SWACT. To prevent this fromhappening, make sure that the high switching capacity feature isnot activated at the OMC-R until all DS512 cabling is complete.

Procedure

Step Action



2 Remove the caps on the module and cable.

3 Connect the fiber optic cables between CEM and 8K-RM. CEM0(shelf 0, slot 7) is coupled with 8K-RM0 (shelf 0, slot 9). CEM1(shelf 0, slot 8) is coupled with 8K-RM1 (shelf 0, slot 10).

a Squeeze the locking clip and gently push the connector intothe receptacle until it clicks into place.

b The completed cabling should resemble that shown in thefollowing illustration.


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Figure 59DS512 links between the CEM and 8K-RM

4 Label each fiber and position within the shelf as shown in thefollowing figure.


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Figure 60Fiber optic cable insertion

5 Group the optical fibers by length into two groups and inserteach group into a flexible sheath.

6 Secure both flexible sheaths inside the side of the main framewith the help of several tie wraps.


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Figure 61DS512 cabling, final position

7 With the TML, test that the new links are working.

a Launch the TML 3000 application on the active CEM

b From the TML user interface, select the Test / Link /CEM/8K-RM DS512 Link Test.


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Figure 62Select CEM/8K-RM DS512 Link Test

c Wait until the summary window appears.

d In the summary window, check that

• the result of the link test is OK

• the number of fault links is 0

• each 4 links of each 8K-RM module are OK

e Click OK to finish the CEM / 8K-RM DS512 link test.

8 At the OMC-R, from the MMI, set the bscHighSwitchingCapacityparameter on the bsc object to enabled.

9 At the OMC-R, from the MMI, lock, and then unlock, thepcuMdInterface object.

--End--

4.2.26 Removing DS512 links for high switching capacityUse this procedure to remove of existing DS512 fiber optic links betweenthe 8K-RM and CEM in the interface node of the BSC 3000, once the BSChigh switching capacity is deactivated. If you need to temporarily removea fiber optic connection to replace a CEM or 8K-RM card, or replace adefective DS512 cable, use 4.2.27 “Removing and replacing DS512 linksfor BSC high switching capacity” (page 195).



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Product reference





Tools requiredNone.


LocationFigure 59 "DS512 links between the CEM and 8K-RM" (page 189)

Procedure

Step Action




Holding a module by the front panel latches onlycan result in Front panel latch breakage. Once themodule has been pulled half way out of the shelf,carefully grasp the module underneath for moresecure support and continue to remove the modulefrom the shelf.


CAUTIONEquipment damageDamage to fiber-optic cables.



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a The bscHighSwitchingCapacity feature must be deactivatedand a lock/unlock of the pcuMdInterface object is requiredbefore removing the fibers.

To deactivate the feature from the OMC-R:

i on the BSC object on the MMI, set the bscHighSwitchingCapacity feature to disabled.

ii if the GPRS is used, lock/unlock the pcuMdInterfaceobject at the MMI to force existing GPRS connectionsfrom the DC512 links to the backplane.

3 Extraction of the fibers

a Open the front panel latches of the module that has the fiberoptic links that are to be removed.

b Remove the fiber-optic cables.

CAUTIONEquipment damageDamage to fiber-optic cables.



--End--


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4.2.27 Removing and replacing DS512 links for BSC high switchingcapacity

Perform this procedure while the BSC 3000 is online:

• either to replace a damaged DS512 link between the CEM and 8K-RMcards

• or as needed to remove and reattach DS512 cabling during thereplacement of a CEM or 8K-RM card


Product reference





Tools requiredNone.


LocationFigure 63 "DS512 links between the CEM and 8K-RM" (page 196).


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Figure 63DS512 links between the CEM and 8K-RM

Procedure

Step Action





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If the fiber optic DS512 is enabled or disabled from the OMC,it is mandatory first to disconnect the DS512 from the passive8K-RM, whatever the CEM state, active or passive.



3 Unplug the fibers on the passive 8K-RM

a Cut all tie wraps necessary to secure both flexible sheathsinside the side of the main frame according to Figure 64 "Cutall tie wraps" (page 197).

Figure 64Cut all tie wraps


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b It is mandatory to disconnect the set of four fiber-opticDS512s from the passive 8K-RM regardless of the activity ofthe CEMs.

c To remove the fibre optic cables between the CEM and the18K-RM, perform the following procedure for each of thecables (up to four fiber-optic cables for each CEM / 8K-RMcouple):

• Squeeze the locking clip.

• Gently pull the connector from the receptacle (see thefollowing figure).

Figure 65Gently pull the connector from the receptacle

4 Unplug the other side of the fibers on the associated CEM.


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a Disconnect the four fiber optic DS512s from the CEM side,whatever the CEM state (active or passive) but according tothe CEM / 8K-RM couple.

b To remove the fibre optic cables between the CEM and the8K-RM, perform the following procedure for each of thecables (up to four fiber optic cables for each CEM / 8K-RMcouple):


• Gently pull the connector from the receptacle. For moreinformation, see Figure 65 "Gently pull the connector fromthe receptacle" (page 198).

5 Now all four fiber optic DS512s are removed between the 8K-RMand its associated CEM.

You can either:

• Replace the impacted faulty board if necessary. For moreinformation on the CEM, see 4.2.10 “Replacement of a CEMor CEM2 or CEM3” (page 111), and for the 8K-RM see 4.2.11“Replacement of an 8K-RM” (page 118). If a passive cardhas been replaced, wait for the flashing green LED.

or

• Prepare the new set of fibers for installation in the 8K-RM /CEM plane. Then go to step 6. It is forbidden to replace morethan one plane at a time.

6 Install the new fibers

a Connect the four fiber optic DS512s in place of the onespreviously removed (on the CEM / 8K-RM passive couple):


• Gently push the connector into the receptacle until it clicksinto place.

b The four fiber optic DS512s is now correctly placed.

7 If fibers on the active 8K-RM also need to be changed, wait untilthe passive 8K-RM and its associated CEM are both hotStandby,as indicated by the flashing green LED. Wait until both modulesare hotStandby before continuing with the next step.

8 Verify the fiber links to the standby 8K-RM cards are operatingcorrectly (link status is “OK”). At the TML, perform the followingsteps.

a Launch the TML 3000 application on the passive CEM.

b From the TML user interface, select the Test / Link / CEM/8K-RM DS512 Link Test.


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c Verify that all links show a status of OK.

Alternatively, if you have access to the OMC-R at this point,inspect the status of the four DS512s connected to the passive8K-RM and confirm that they are in service and the 8K-RM isenabled (not degraded).

If the DS512 links are in service and the 8K-RM is enabled, youcan safely remove the fibers from the active 8K-RM withoutcausing a service interruption. Do not continue until you havedemonstrated that all links on the passive side are OK.

9 When the first DS512 link is removed from the active 8K-RMs aSWACT is automatically triggered, making that 8K-RM passive.

10 Repeat steps 3-6 to replace the fibers on the second8K-RM/CEM plane. Then repeat steps 7 and 8 to verify thatthe passive 8K-RM cards are in hotStandby and the newlyconnected fiber links are operational.

11 Fiber optic CEM / 8K-RM DS512 Links test

a Once the status of the CEM / 8K-RM board is stable on theIN, the fiber test can be made with the TML3000 help.

b Launch the TML 3000 application on the active CEM.

c From the TML user interface, select the Test / Link / CEM /8K-RM DS512 Link Test. .Figure 66Select CEM/8K-RM DS512 Link Test

d Wait until the ’Summary’ window appears.


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e In the ’Summary’ window, check that:

• The result of the link test is OK

• The number of faulty links is 0

• Each four links of each 8k-RM module is OK

f Click OK to finish the CEM / 8K-RM DS512 Link Test.

g Exit the TML3000 tool.

12 Additional checks

a Replace correctly and secure both flexible sheaths inside theside of the main frame, according to Figure 64 "Cut all tiewraps" (page 197).

b Gently replace the tie wraps.

c Close the shelf doors.

--End--

4.2.28 Replacement of a shelf backplaneThe Shelf backplane is not a Field Replaceable Unit. The recommendedsolution for a backplane issue involves replacing the complete shelf(NTLX51BA).

ATTENTIONYou cannot order a backplane by itself. If you want to replace it, you must useparts from an existing unit.

The NTLX51BA is a dual-shelf unit with a bottom shelf position (p0), a topshelf position (p1), and slot numbers (sn). The slot numbering begins atleft. Slot 01 on the bottom shelf is written as p0:s01.

For more information and for a view of a NTLX51BA shelf, see Figure 67"Spectrum Peripheral Module Enhanced Double Height Shelf Assembly"(page 202).


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Figure 67Spectrum Peripheral Module Enhanced Double Height Shelf Assembly

The NTLX51BA Double Height Shelf Assembly resides in the NTOX25BEgray framework assembly and houses the DMS-Spectrum PeripheralModule (SPM) resource modules (RMs). In this case the RMs are PrintedCircuit Pack (PCP) modules. The NTLX51BA is a replacement for theNTLX51AA dual-shelf assembly, and it mounts in position 06 and 43 inthe NTLX50BA. The NTLX51BA can function as a SMG 4000 DS-1, SMG4000 OC-3, or IW SPM depending on the RMs (or packfills) provisionedinto the module.


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Product reference


Equipment PEC CPC PEC PEC

Spectrum shelf assy with4 HIG

NTLX51BG N0088718 NTLX51BA B0251745

4.2.28.1 Enhancements available when NTLX51AA is upgradedto the NTLX51BA

• The NTLX51BA dual-shelf assembly provides four high speed slotsto accommodate resource modules (RMs) that have high bandwidthneeds, while the NTLX51AA dual-shelf assembly only provides two.

• The NTLX51BA provides four low speed slots to accommodate RMsthat have low bandwidth needs, while the NTLX51AA provides none.

4.2.28.2 Components of the NTLX51BA

• NTLX5016 air filter tray assembly (one for each dual-shelf assembly)

• NTLX5101 shelf mechanical assembly (one for each dual-shelfassembly)

• NTLX5211 backplane assembly (one for each dual-shelf assembly)

• NTLX60AA blank filler faceplate (0 to 22 for each dual-shelf assembly)

• NTLX61AA shelf interface module (SIM) (two for each dual-shelfassembly)

• NTLX63AA, NTLX82AA, or NTLX82BA common equipment module(CEM) (two for each dual-shelf assembly)

ATTENTIONThe NTLX63AA CEM is not compatible with SP15.

• NTLX65AA or NTLX65BA digital signal processor (DSP) resourcemodule (RM) (0 to 24 DSP RMs for each dual-shelf assembly)

• NTLX66AA, NTLX66BA, NTLX85AA, or NTLX86AA voice signalprocessor (VSP) RM (0 to 24 VSP RMs for each dual-shelf assembly)

4.2.28.3 SPM BackplaneThe SPM shelf houses a single backplane with the following features:

• 492 mm high X 747 mm wide (19.37’ X 29.41’)

• 10 layer PCB

• backplane containing 30 card slots:


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— Two provisioned for Common Equipment Modules

— Two provisioned for Shelf Interface Modules (for power and alarms)

— 26 provisioned for Resource Modules

• all slots consist of a SU 2.5 mm 35 pin Molex connector usedspecifically for power and frame ground connections

• all resource module slots consist of two SU 2.5 mm 85 pin Molexconnector used specifically for digital signals

• Common Equipment slots consist of a 10 SU 2.5 mm 475 pin Molexconnector used specifically for digital signals

The Molex Omnigrid 2.5 connector family used in the Spectrumplatform is a five column backplane connector system, with malecontacts on the backplane and female contacts on the modules. Thisallows two signal tracks to be routed between pins.

4.2.28.4 Action plan

1. On the control Node, switch off both SIMs and remove the opticalfibers. Place them carefully on the cable tray.

2. Unplug all the CN shelf boards from the back panel.

3. On the CN back, unscrew the 5 X 4 screws of the cover plate and putit on a bag.

4. Remove the backplane connector NTLX5211 and replace it correctly.

5. Carefully replace the cover and screws.

6. Plug all the CN boards on the shelf.

7. Switch on the two SIM boards and wait for the node restart.


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205.

Chapter 5 Advanced maintenanceprocedures

5.1 Introduction5.1.1 Presentation

This chapter describes the advanced maintenance procedures for the BSC3000 and TCU 3000 equipment. Some advanced maintenance proceduresmay require the entry of commands on the BSC 3000 and TCU 3000equipment and may also require the removal of power from the equipment.

These procedures contain both numbered steps (1, 2, ...) and alphasub-steps (a, b, ...). Prerequisites are used to list items which are requiredto perform the procedure and figures are used to locate equipment whichis referenced in the procedure.

5.1.2 Preliminary operationsObserve the following messages when performing advanced maintenanceprocedures.

DANGERPersonnel safety rulesThe personnel working on the cabinet must be authorized towork according to applicable safety rules.

CAUTIONESDS handling precautionsWear an anti-static wrist band during every maintenance action,especially when handling the modules.

5.1.3 ToolsThe screwdrivers are the only tools required.


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206 Chapter 5 Advanced maintenance procedures

5.2 Troubleshooting and repair procedures5.2.1 Halt procedure for BSC 3000

Explanation

CAUTIONControl node impactTake extreme care with this command: it has serious effectson the control node. Only perform this command with theassistance of Nortel Networks support personnel.

Step Action

1 Cn_halt procedure

2 From the TML user Interface select: Test/Module/Cn_halt (Figure 5-1).


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5.2 Troubleshooting and repair procedures 207

Figure 68TML user interface


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3 The following window appears.Figure 69Confirmation window

4 Press OK to start the CN_Halt command.

ATTENTIONFull processing of CN_Halt command may take about two minutes tocomplete. Wait until completion before switching off the CN/IN andTCU SIM boards.

5 The TML session is automatically closed.

6 When the BSC/TCU is powered off, wait about one minutebefore switching ON the BSC/TCU SIM boards.

--End--

5.2.2 Clock synchronization requirements for BSC 3000 and TCU 3000ProblemThe BSC/TCU 3000 behaves as expected in an environment wherethe quality (stability) of the input clock is not always as expected. TheBSC/TCU 3000 attempts to react to transient input by discarding thecurrent PCM clock reference and looks for better clock with a referenceswitch. The notification sent to OMC-R may be interpreted as informationalas long as a new reference from the MSC is selected.

ImpactThere is no CallP services quality degradation linked to the BSC/TCU 3000clock reference.


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Detection processThe issue can be identified at the OMC-R based on notification sentby the BSC/TCU 3000 equipments. At MMI, notification logs related toPCM synchronization can be easily identified. The alarm criteria can becustomized for proper identification.

SolutionThe solution consists in reconfiguring ports of the DACS to propagate bitsclock from external interface. In many cases, there is a significant amountof noise measured at the output of a DACS port card when compared tothe input. This occurs when the port is provisioned for through timing.While provisioned for throe timing, the port will not re-frame the T1 or it willre-frame based on the input signal-as it travels through the DACS.

5.2.3 Detect the faulty IEM or the PCM link NOK and replace the faultymodule

5.2.3.1 ContextThis troubleshooting applies to the following cases:

• IEM SWACT NOK for a specific LSA complex

• LSA sanity check during PCM extension

• Addition of LSA complex on BSC 3000 and TCU 3000

5.2.3.2 InstructionLocal check for the status of the system and for the alarm level of theOMC-R MMI:

• Visual inspection:

The active IEM boards of the Interface and Transcoder Nodes mustdisplay a steady green LED. The passive IEM boards must display ablinking green LED. Any red LED lit implies the board is faulty and it isnecessary to replace it.

The active IEM must display "OK" if there are no failure signals. If theactive IEM displays "XX", the copper connector between the IEM and theCTB is faulty.

The passive IEM display must be blank and when using the up/downarrow buttons, if one or more numbers are displayed for the active IEM,this means there is a problem on the PCM link(s) with the correspondingnumber(s); the PCM is not present or incorrectly connected.

The CTU loop-back button can be used to detect the different PCMs. Thecables connection and the connectivity must then be checked.


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• Signal failures

- LOS: Loss of signal: this alarm is triggered when there is no transitionon the incoming signal

- AIS: Alarm Indication Signal: this alarm triggered when the incomingsignal is unframed.

- LFA for E1 or LOF for T1: Loss of frame alignment / Loss of signal frame:it is triggered after the third consecutive error of the alignment signalsor on the third error of the bit 2 of TS0 in frames that don’t contain anyalignment signals.

• MMI verification

1. Check the status of each IEM board on the OMC-R MMI.

2. Run the Display allcommand on the active IEM.

3. The status must be “enabled” in the operationalState field and“providingService” for the standbyStatus field:


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Figure 70IEM status in OMC-R MMI description window

4. Run the Display all command on the passive IEM.

5. The state must be “enabled” in the operationalState field and“hotstandby” for the standbyStatus field: the passive board can takecontrol when the switch from the active to the passive IEM is triggered.


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• Replacement decision sequence

If one passive IEM card operationalState displays a failed or degradedstatus or a status different from what was described in the previous stepsand if some 2032 alarms are displayed at the MMI, the passive IEM mustbe replaced.

If signals alarms like LFA or LOS are triggered on one passive IEM board,and if the PCM status and connections have been checked, a replacementis necessary.

Once the impacted IEM has been replaced and started-up, the TIM mustbe replaced if the IEM status has not changed.

• IEM passive board replacement:


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Step Action

1 Check the display on the passive IEM is blank.

2 Unplug the passive board once you checked the status of theactive IEM at the OMC-R is "MMI enabled – providing Service".(this means the active IEM is OK and is able to carry traffic).

3 Plug in the spare IEM board.

--End--

• Led sequence once the IEM boards has been plugged in:

- Green and red LEDs ON for about 15 seconds

- Green LED ON for a few minutes

- Red LED will lit several times during the startup

- Green LED starts blinking and red LED OFF: the module is operational

• TIM board replacement:

This replacement takes about 15 minutes.

There is no software on the TIM board. The board can only be replaced forthe following cases:

- Both LEDs OFF: module not powered or faulty

- Red LED ON: Alarm state

- Both LEDs ON during a long period of time after the replacement

- Path finding NOK after the IEM replacement

- The Replacement decision sequence determines if a TIM modulereplacement is required

WARNINGIn case of replacement of this module, the two attached IEMsmust be removed, causing the loss of the associated PCM.

The node is synchronized on LSA 0. Simultaneous extraction ofboth IEMs of LSA 0 implies a loss of external synchronization.


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Step Action

1 Disconnect the TIM Tx and TIM Rx cables from the faceplate ofthe TIM.

2 Extract each IEM.

3 Extract the NTLX92AA TIM/RCM assembly.

--End--

Step Action

1 Plug-in the new TIM/assembly.

2 Reconnect the TIM Tx and TIM Rx to their initial location on theTIM faceplate (the TIM Tx is on the upper connector and the Rxon the lower connector).

3 Plug-in the IEMs.

--End--

CAUTIONCheck of the indicatorsOnce the sequence of the IEMs has been initialized, checkthe indicators of IEM as well as their operational status at theOMC-R MMI.


411-9001-132 18.06 3 February 2010


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Global System for Mobile Communications (GSM)

Nortel GSM BSC 3000/TCU 3000 TroubleshootingRelease: V18.0 PC2Publication: 411-9001-132Document revision: 18.06Document release date: 3 February 2010


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