MSOFTX3000 Hardware Introduction ISSUE2.1

1Functions, external interfaces, cable connection, and DIP setting of boards
Signal flow among boards
HUAWEI TECHNOLOGIES CO., LTD.
Section 2 Hardware Platform Evolution
Section 3 OSTA2.0 Platform
Introduction to the MSOFTX3000
The MSOFTX3000 provides functions such as location management, call control, and media gateway control. It can be flexibly deployed as the VMSC server, GMSC server, TMSC server, VLR, SSP, or STP.
MSOFTX3000 V2R8 is the basic version of the OSTA2.0 platform. It is upgraded from the OSTA1.0 platform without major changes in terms of product orientation, functions, and features.
CPCI Platform Structure
Centralized power supply: The UPWR supplies power for all boards in a subrack.
Dual CPCI buses (that is, resource-sharing buses A and B) with the bandwidth of 2×2Gbps
Ethernet dual-platform and dual-star architecture
Master and slave serial buses
H.110 bus, providing switching capability of 4096 timeslots and 256 Mbps bandwidth
The CPCI platform is designed according to the related specifications of computers. At the initial stage, the CPCI platform provided only the CPCI bus. The CPCI subrack is just like a computer. The four UPWRs in the subrack function as the power modules of computers and provide 3.3V, 5.0V, and ±12V power supply. The backplane, WSMUs, and WHSCs together function as the mainboard of a computer and provide PCI bus and interfaces. The service board USP functions as the PCI card of a computer and communicates with the system through the PCI bus. Later, the Ethernet bus and H.110 bus are added with the development of the platform.
Low scalability
H.110 bus: 256 Mbps
Ethernet bus: 24 x 100 Mbps (in spite of expansion)
Limitations related to the power supply, structure, and heat dissipation: The maximum power consumption of a single slot (50 W) constrains the performance improvement of boards.
Not hot-swapping subboards
Low reliability
The bus structure has inherited faults and potential single-point failures, for example, centralized power supply, CPCI bus, and master/slave serial bus
The device control flow cannot be separated from the service flow. This may cause security problems.
Non-authentic Open Standard Platform
Carrier-specific standard: Expanded with multiple private interfaces based on the original CPCI standard (for example, Ethernet bus, H.110 bus, back board size, and main/slave serial port bus)
No standard open software interface; tight coupling of hardware and software
High lifecycle costs
Challenges
With the development of the telecom industry, carriers are increasingly having higher requirements related to telecom devices, especially in the following aspects:
Simplicity: The platform should be capable of simplifying the design, manufacture, test, and application of network devices.
Capacity: The platform should provide sufficient bandwidth, call rate, processor loading rate, and operating efficiency to meet the current and future requirements.
Performance: The platform should be capable of supporting short delay and call setup duration and providing high service performance and QoS.
Reliability: The reliability of the platform should reach 0.99999.
Serviceability: The platform should be capable of providing simple, strong, and cost-saving OAM&P.
Security: The platform should be capable of protecting key services from being intercepted and against Hacking.
Time to Market: Time to market for a new product should be shortened. (purchasing boards, subracks, Middleware, and APIs from other vendors to reduce development workload)
Cost: Lifecycle costs should be reduced. (software and hardware architectures can ease the multiplexing among different products and reduce development workload)
Regulatory Considerations: The platform should comply with international specification and standards.
Advanced Telecommunications Compute Architecture (ATCA ) is the largest specification effort in the history of the PCI Industrial Computer Manufacturers Group (PICMG), with more than 100 companies participating. It includes serials of specifications, for example, PICMG3.0, PICMG3.1, PICMG3.2, PICMG3.3, and PICMG3.4.
Sub-specifications:
3.2: InfiniBand Transport
3.3 : StarFabric Transport
AMC module specification: hot swapping and subboard specification
The ATCA specification is developed based on the CPCI specification. It meets the new requirements of the telecom industry with the following features:
Dual -48 VDC redundancy power
High-speed differential signal connector and high bus bandwidth
Proper board size (8U x 280mm) and slot distance (1.2 inch) for ease of heat dissipation
Hot-swap high-speed subboards
Standard IPMI bus for the management of any parts in the system
Open software and hardware architecture with the CGL operating system
Compliance with the NEBS and ETSU standards
High reliability with the dual-star architecture for service buses
PICMG:PCI Industrial Computers Manufacturers Group.
13 U/14 U (height), 19“(width)
Board size
Board power
Distributed power supply (Dual – 48 V/ - 60 VDC)
I/O
Subboard
Blade
0
Blade
1
Blade
2
Blade
3
Blade
4
Blade
5
Blade
8
Blade
9
Blade
10
Blade
11
Blade
12
Blade
13
Update bus
In the ATCA system, each Blade acts as a server. The servers are interconnected with each other through multiple switching networks. Among the switching networks, Fabric0, Fabric1, Fabric2, and Fabric3 can be customized as different switching networks, such as the GE switching network or FC switching network, according to service requirements. These four networks can even be combined to one 10 GE switching network. Currently, Huawei uses two networks, namely, Fabric GE switching network and TDM switching network. The remaining two networks are reserved for future use. Therefore, the ACTA system can be simply considered as a huge computing and processing platform by interconnecting multiple servers through LAN Switches.
Enhanced Features of Huawei OSTA2.0 Platform
Huawei OSTA2.0 platform is developed according to the requirement of core network devices. The following enhanced features are implemented without making any changes to the ATCA architecture:
Carrier-grade design: providing carrier-grade components with low power consumption and high-reliability and redundancy design
Enhanced fault management: supporting pre-alerting, diagnosis, isolation, and recovery of fault management in terms of the system, modules, and chips
Supporting remote maintenance
Providing a time precision module for precise charging
Providing a stratum-2 clock module
Providing built-in FC switching module and layer-2 and layer-3 switching module
Supporting subrack cascading to meet requirements for high capacity
Providing TDM interfaces, including E1/T1, STM-n, and ATM
Providing various access interfaces for storage devices, including the FC, SCSI, and SAS
Providing a built-in storage unit
Providing built-in routing function
IPMB
Base
Fabric
TDM
SMM
SMM
FAN
FAN
PDB
Serial
SWU
UPB
UPB
UPB
UPB
UPB
UPB
UPB
UPB
UPB
UPB
UPB
UPB
PEM
USI
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USI
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USI
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USI
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USI
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USI
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USI
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USI
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USI
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SDM
SDM
IPMB
BASE
FABRIC
SWU
SWI
SWI
TDM
PEM
The OSTA2.0 hardware platform provides four types of buses:
IPMB bus: It is the device management bus in an OSTA2.0 subrack. With the IPMB bus, the SMM monitors and manages all the hardware in the subrack. The IPMB bus transmits all the information related to the hardware, such as alarms, power-on/power-off operations, and fan speed adjustment.
Base bus: It is located on the management and control plane of the system. It provides a channel for software loading, alarm reporting, and maintenance message delivery.
Fabric bus: It provides a data channel for the system service plane. It transmits the service information of the system.
TDM bus: It is used to deliver the system clock source and the narrowband timeslot information of bearer boards.
The SMM is the management module of an OSTA 2.0 subrack. It manages all the boards and modules in a subrack. The IPMB bus is the device management bus of a subrack. With the IPMB bus, the SMM can implement device management, event management, asset management, remote maintenance, configuration restore, resource-saving control, power monitoring, and fan speed adjustment.
The SWU is a switching core of the entire Base plane. It provides switching of the system control plane messages and cascading interfaces of the Base plane. All the boards in a subrack are connected to the SWU through the Base plane and transmit the system control plane messages with each other each through the SWU.
The SWU is a switching core of the entire Fabric plane. It provides switching of the system service data plane and cascading interfaces of the Fabric plane. All the UPBs in a subrack are connected to the SWU through the Fabric plane and transmit the service data messages with each other each through the SWU.
The SWU is the switching core of the TDM bus. It implements generation and distribution of system synchronization clocks.
Questions
Compared with the OSTA1.0 platform, what are advantages of the OSTA2.0 platform?
How many types of buses are provided by the MSOFTX3000 OSTA2.0 platform? What are the corresponding functions of each type of bus?
Answers
Compared with the OSTA1.0 platform, what are advantages of the OSTA2.0 platform?
Strong scalability, great bandwidth, high integrity, and abundant service interfaces
Dual-star bus and distributed power supply ensure higher security.
Compliance with standard specifications; lower lifecycle costs
How many types of buses are provided by the MSOFTX3000 OSTA2.0 platform? What are the corresponding functions of each type of bus?
The OSTA2.0 hardware system provides four types of buses:
IPMB bus: It is the device management bus in the OSTA 2.0 subrack. With the IPMA bus, the SMM monitors and manages all the hardware in the subrack.
BASE bus: It is a management control plane bus of the system. It is g generally used for software loading, and transmission of the alarm and maintenance information.
FABRIC bus: It is the data channel of the service plane. It is generally used to transmit information related to services in the system.
TDM bus: It is used to transmit the information about the system synchronization clock and narrowband timeslots among bearer boards.
The MSOFTX3000 uses the N68E-22 cabinet:
Dimensions: 600 x 800 x 2200 (width x depth x height)
Available space inside: 46 U (1 U = 44.45 mm )
A maximum of three OSTA2.0 subracks configured for each subrack
Weight: 100 kg (400 kg in full configuration)
Single-door providing the air filter, with the perforated rate reaching 51%
Supporting up to 8 KW heat dissipation
MSOFTX3000 cabinets are classified into integrated configuration cabinets and service processing cabinets.
A cabinet is configured with a 3-U PDB that supports the dual 3-input power supply and dual 10-output power.
An integrated configuration cabinet can be configured with two OSTA2.0 subracks, two LAN Switches (for external networking), one KVMS (optional), and one MRMU (optional).
A service processing cabinet is configured with up to three OSTA2.0 subrack.
MSOFTX3000 V2R8 supports two cabinet and four subracks in full configuration, as shown in the figure.
PDB
Supporting dual-input, dual 2-input, and dual 3-input power supply (dual 3-input is used for the MSOFTX3000)
Input voltage: -40 to -72 V DC; Maximum input current: 100 A
Supporting the dual 10-output power supply, with maximum current of 50 A for each output (not more than 100 A for each zone)
The ATCA-based cabinet adopts the dual 3-input power supply, which is much different from the CPCI-based product.
The reasons are as follows:
1. An integrated configuration cabinet supports three ATCA-based subracks, and each subrack provide a maximum of 2300 W power consumption (2100 W for the MSOFTX3000).
2. Some power distributed cabinets cannot provide 63 A air breaker circuits, but the 63 A air breaker circuits have been defined according to the site survey report of the CPCI-based MSOFTX3000. To maintain the consistency, the ATCA-based MSOFTX3000 is also designed according to the 63 A specification.
3. When the -48 V power is supplied, the voltage input is –40 V to –57 V. Thus, tne power supply provides a minimum of 2520 W power consumption.
To sum up, one power supply is available to only one ATCA subrack. Therefore, the cabinet is designed with dual three-input power supply by default, which requires that the current of the air breaker circuits cannot be less than 63 A.
Air circuit breaker
Each PDB supports a maximum of four external Boolean alarm inputs.
1. Input terminal
2. Output terminal
Power Switches that Control the Internal Components
Each subrack is controlled by four switches.
Refer to the mapping between the switches and components during the cable configuration and power-on/power-off operation.
Cabinet
Switch
Component
SUBRACK-1 (expansion subrack 1)
SUBRACK-0 (basic subrack 0)
HUAWEI Confidential
OSTA2.0 Subrack
Design Standard
Complies with NEBS GR-63-core and ETSI 300 019 CLASS 3.1 standards.
Dimension
619.5 mm (H) x 482.6 mm (W) x 450 mm (D)
Capacity
Architecture
The backplane is plugged in the middle with boards installed back to back (the sizes of front board and back board are different).
Cabling
Cables are led out from the rear of the subrack.
Heat Dissipation
Two fan boxes are located at the bottom of each subrack for front to back airflow.
Power Supply
Temperature
Humidity
Fan box
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Subrack Power
A subrack provides 1+1 redundancy power (-48V/-60V) through two PEMs.
The boards in a subrack are divided into two areas, namely, area 1 (slots 0 through 6) and area 2 (slots 7 through 13). Each PEM provides two power inputs for each area, and each power input is configured with air circuit breakers for the purpose of subrack-level delivery.
A front board works together with a back board and supplies power for the back board.
DC power input for area 2
Blade0Server
Blade1Server
Blade6Switch
Blade7Switch
Blade8Server
Board13Server
SMM1
SMM2
FANS
-48Vb2/RTNb2
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Subrack Slots
A subrack contains a middle-positioned backplane, with front boards and back boards installed back to back. The back boards that function as the interface boards supply power for the front boards. One front board works together with one back board. If a front board does not require a back interface, you need not configure a back board for it.
A subrack provides 14 service slots, of which slots 6 and 7 are permanently used for SWUs and SWIs and the other slots are used for UPBs and USIs.
Front board size: 355.6 mm (8 U) x 280 mm x 30.5 mm (1.2 in.)
Back board size: 355.6 mm (8 U) x 70 mm x 30.5 mm (1.2 in.)
8 U
280 mm
70 mm
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MRMU is short for Master Rack Monitoring Unit.
Provides a standard 10/100M Ethernet interface for communication with the NMS.
Provides two RS485 ports for managing eight PDBs and eight DC fan boxes or eight RMUs and eight AC fan boxes.
Provides one external interface for connecting to a temperature and humidity sensor that are used for monitoring the status of the cabinet.
Reserves three types of optional analog monitoring interfaces for the sensors with voltage ranging 0 to 5 V and current ranging 4 mA to 20m A. The type of interface can be specified by users.
Implements the smoke alarm, water alarm, and intrusion alarm functions by being connected to the corresponding external sensors.
Reserves eight interfaces for Boolean detection.
Reserves four interfaces for control variable output, where two interfaces are used for relay output and other two interfaces for optical coupling output.
Supports audible alarms (buzzer) and visual alarms (alarm indicator).
Front view
Rear view
As an environment monitoring device, the MRMU is optional for the MSOFTX3000. It is configured only when the ambient environment (such as equipment room temperature ) needs to be monitored or the PDB of a cabinet cannot provide sufficient Boolean alarm interfaces.
SN.
Description
1
Questions
Which type of cabinet is used for the MSOFTX3000? How many types of cabinets are there?
How many cabinets and subracks are supported by the MSOFTX3000 in full configuration?
How many slots are provided by an OSTA2.0 subrack of the MSOFTX3000? How many slots are service slots?
What are the power supply features of an OSTA2.0 subrack of the MSOFTX3000?
Answers
Which type of…

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MSOFTX3000 Hardware Introduction ISSUE2.1