BSC6900V900R011-R012 GO Hardware Description Issue1.0

HUAWEI TECHNOLOGIES CO., LTD. All rights reserved

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Internal

BSC6900 Hardware Description

BSC6900V900R011/R012


Upon completion of this course, you

will be able to:

Master the BSC hardware

structure ;

Master the BSC board function

and specifications.


References

《 BSC Product Documentation 》

《 BSC Hardware Description 》


Chapter 1 Physical StructureChapter 1 Physical Structure

Chapter 2 Cabinet Chapter 2 Cabinet

Chapter 3 Cable ConnectionsChapter 3 Cable Connections

Chapter 4 Components of the CabinetChapter 4 Components of the Cabinet

Chapter 5 SubracksChapter 5 Subracks

Chapter 6 BoardsChapter 6 Boards

Chapter 7 CablesChapter 7 Cables


Physical Structure



Chapter 2 CabinetChapter 2 Cabinet







Cabinet

Appearance of the CabinetAppearance of the Cabinet

Single-door Cabinet Double-door Cabinet


Cabinet

Classificatins of the CabinetsClassificatins of the Cabinets

MPROnly one MPR is configured in the BSC6900.

EPRThe number of EPRs to be configured depends on the traffic volume, but only one EPR can be configured in the BSC6900. You can also choose not to configure the EPR.

TCRThe number of TCRs to be configured depends on the traffic volume and the configuration modes of subracks. Up to two TCRs can be configured in the BSC6900. You can also choose not to configure a TCR.


Cabinet

Components of the CabinetComponents of the Cabinet

(1) Air Inlet(2) Independent fan subrack(3) Subrack(4) Air defence subrack(5) Filler panel(6) Power distribution box(7) Cable rack(8) Rear cable through

NOTE: The subracks are numbered from bottom to top, and the MPS is numbered 0.

MPR/EPR/TCR


Cabinet

Technical Specifications of the CabinetTechnical Specifications of the Cabinet

Item Specification

Dimensions 2,200 mm (height) x 600 mm (width) x 800 mm (depth)

Height of the available space 46 U (1 U = 44.45 mm = 1.75 inches)

Weight • Empty cabinet ≤ 100 kg • Cabinet in full configuration ≤ 320 kg

Rated input voltage -48 V

Input voltage range -40 V to -57 V

Electromagnetic Compatibility (EMC)

• Meets the requirements in ETSI EN300 386 • Meets the requirements in Council directive 89/336/EEC


Cable Connections

Connections of Power Cables and PGND Cables in the CabinetConnections of Power Cables and PGND Cables in the Cabinet

Connections of Power and PGND Cables

SN Description

5, 6, 11, 12 Power cables for the bottom subrack

3, 4, 9, 10 Power cables for the middle subrack

1, 2, 7, 8 Power cables for the top subrack

13 PGND cable connecting the power distribution box and the mounting bar

14, 15, 16, 17, 18, 19 PGND cables connecting the subracks and the mounting bar

24, 25, 26 Inter-cabinet PGND cables

27, 28, 29, 30 Power cables for the independent fan subrack

31 PGND cable connecting the independent fan subrack and the mounting bar

50-57 PGND cables for cabinet doors and side panels

For clearer view


Cable Connections

Connections of Signal Cables for the MPRConnections of Signal Cables for the MPR

For clearer view

SN Description Connector Type1/Connection Position1

Connector Type2/Connection Position2

Remarks

1 75-ohm coaxial cable or 120-ohm twisted pair cable connecting the GCUa board to the BITS clock

SMB male connector/CLKIN1 port on the GCUa board in slot 13 of the MPS

Connector of the BITS clock/BITS clock port

Figure 1 shows the clock cables connected to the CLKIN1 and CLKIN0 ports. In practice, only one port is used to connect to the BITS clock.










Connections of Signal Cables for the MPR


Cable Connections

Connections of Signal Cables for the EPRConnections of Signal Cables for the EPR

For clearer view

SN Description Connector Type1/Connection Position1

Connector Type2/Connection Position2

1 Ethernet cable connecting SCUa boards of different subracks

RJ45/The 10/100/1000BASE-T port on the SCUa board in slot 6 of the EPS

RJ45/The 10/100/1000BASE-T port on the SCUa board in slot 6 of the MPS










Connections of Signal Cables for the EPR


Cable Connections

Connections of Signal Cables for the TCRConnections of Signal Cables for the TCR

For clearer view

SN Description Connector Type1/ Connection Position1

Connector Type2/ Connection Position2

1 Monitoring signal cable for the power distribution box

DB15/Port connecting the power distribution box to the independent fan subrack

DB9/MONITOR 1 port on the independent fan subrack


RJ45/The 10/100/1000BASE-T port on the SCUa board in slot 6 of the main TCS

RJ45/The 10/100/1000BASE-T port on the SCUa board in slot 6 of the TCS







Connections of Signal Cables for the TCR


Components of the Cabinet

Appearance (Front Panel) of the High-Power Distribution BoxAppearance (Front Panel) of the High-Power Distribution Box

(1) Panel of the PAMU board (2) RUN LED (3) ALM LED

(4) Mute switch (5) Power switches (6) Labels for power switches



Appearance (Front Panel) of the High-Power Distribution BoxAppearance (Front Panel) of the High-Power Distribution Box

The mute switch is set to determine whether an audible alarm is generated.

• If you set the mute switch to I, the power distribution box generates an audible alarm when it is faulty. • If you set the mute switch to O, the power distribution box does not generate any audible alarm when it is faulty.

LED Color Status Description

RUN Green ON for 1s and OFF for 1s

The PAMU board is functional and communicates with the SCUa board properly.

ON for 0.25s and OFF for 0.25s

The PAMU board is not working or it does not communicate with the SCUa board properly.

OFF There is no power supply to the PAMU board or the power distribution box does not work properly.

ALM Red OFF There is no alarm related to the power distribution box.

ON The power distribution box is faulty. During the self-check of the PAMU board, however, the ALM LED is also ON. This indicates that the ALM LED is functional.



Appearance (Rear Panel) of the High-Power Distribution BoxAppearance (Rear Panel) of the High-Power Distribution Box

(1) Power input terminal block (2) Power output terminal block

(3) Port used to connect the power distribution box to a subrack

(4) 2-hole grounding screw (5) J1 port (6) J2 port (port used to connect the power distribution box to a EMU)



Technical Specifications of the High-Power Distribution BoxTechnical Specifications of the High-Power Distribution BoxItem Sub-item Specification

Input Rated input voltage -48 V DC or -60 V DC

Input voltage range -40 V DC to -72 V DC

Input mode Two groups of power inputs: A and B. Group A consists of the power inputs A1+A2 and A3. Group B consists of the power inputs B1+B2 and B3. Each group has one or two -48 V DC or -60 V DC power inputs.

Max. input current The maximum rated input current of each route is 100 A.

Output Rated output voltage -48 V DC or -60 V DC

Output voltage range -40 V DC to -72 V DC

Output mode and current Two groups of power outputs: A and B. Each group has one to four -48 V DC or -60 V DC power outputs. The maximum rated output current of each output is 50 A and that of each group is 100 A.Each output is controlled by MCBs: A7 to A10 and B7 to B10. These MCBs provide the power surge protection function.

Output protection specifications The power surge protection point is 70 A. You need to manually switch on the corresponding MCB after the power surge protection.

Rated output power 9,600 W (Two groups of power outputs: A and B. Each group has two -48 V DC power outputs.)

NOTE: For group A, power inputs A1+A2 correspond to power outputs A1 to A8, and power input A3 corresponds to power outputs A9 and A10. Similarly, for group B, power inputs B1+B2 correspond to power outputs B1 to B8, and power input B3 corresponds to power outputs B9 and B10.



Air Defence SubrackAir Defence Subrack

The air defence subrack is installed between two subracks. It is used to form a straight-through air channel. The air

defence subrack is 1 U in height.



Rear Cable ThroughRear Cable Through

The rear cable trough is used for routing and binding of the cables of rear boards. Each rear cable trough has three

fiber management trays installed at the bottom to coil the optical cables.



Cabling FrameCabling Frame

The cabling frame provides space for the routing of the Ethernet cables for the LAN switch.



Lan SwitchLan Switch

(1) POWER LED (2) Mode status LED (A/L LED)

(3) Mode status LED (D/S LED)

(4) Mode switch button (MODE button)

(5) 10M/100M adaptive full-duplex BASE-TX Ethernet ports

(6) Configuration port (CONSOLE port)

(1) DC power socket (2) Grounding post for the PGND

cable



Appearance (Front) of the Independent Fan SubrackAppearance (Front) of the Independent Fan Subrack

(1) PFCB or PFCU board (2) Fans (3) Handle of the independent fan subrack

(4) Screw (5) LED on the fan box



Appearance (Rear) of the Independent Fan SubrackAppearance (Rear) of the Independent Fan Subrack

(1) Monitor 1 Port, used to connect to the power distribution box

(2) Power input port (3) Monitor 2 Port (Reserved)

(4) Monitor 0 Port, used to connect to subracks

(5) Monitor 3 Port (Reserved)


Classifications of SubracksClassifications of Subracks

Subracks

Based on functions, subracks are classified into the main processing subrack (MPS), extended processing subrack (EPS), and transcoder subrack (TCS).

MPSAs the main processing subrack, the MPS is configured in the MPR. Only one MPS is configured in the BSC6900. The MPS processes the basic services of the BSC6900, performs operation and maintenance, and provides clock signals for the system.

EPSAs the extended processing subrack, the EPS is configured in the MPR or EPR. It processes the basic services of the BSC6900.

TCSAs the transcoder subrack, the TCS is configured in the MPR, EPR, or TCR in BM/TC separated configuration mode. It performs transcoding, rate adaptation, and sub-multiplexing.


Components of SubracksComponents of Subracks

Subracks

(1) Fan box (2) Mounting ear (3) Guide rail

(4) Front cable trough (5) Boards (6) Grounding screw

(7) DC power input port (8) Port for the monitoring signal cable of the power distribution box

(9) Cover plate of the DIP switch


Slots in the SubrackSlots in the Subrack

Subracks

The backplane is positioned in the center of the subrack, and the boards are installed on the front and rear sides of the backplane.


Dip Switch on the SubrackDip Switch on the Subrack

Subracks

Bit Description

1-5 Bits 1 to 5 are used for setting the subrack number. Bit 1 is the least significant bit. If the bit is set to ON, it indicates 0. If the bit is set to OFF, it indicates 1.

6 Odd parity check bit

7 Reserved, undefined, generally set to ON

8 (the most significant bit)

Reserved

Principle of the DIP Switch SettingAs the DIP switch uses odd parity check, the number of 1s in the eight bits must be an odd number. The method for setting the bits is as follows: 1. Set bit 1 to bit 5 as required.2. Set bit 7 to ON.3. Check the number of 1s in the seven bits of the DIP switch. Note that the setting of bit 8 remains unchanged.

• If the number of 1s is even, set bit 6 to OFF.• If the number of 1s is odd, set bit 6 to ON.


Configuration of the MPSConfiguration of the MPS

Subracks

MPS in full configuration in BM/TC separated configuration mode

The INT board (interface board) can be the PEUa board, EIUa board, OIUa board, FG2a/FG2c board, POUc board, or GOUa/GOUc board



Subracks

MPS in full configuration in BM/TC combined configuration mode




Subracks

MPS in full configuration in A over IP configuration mode



Configuration of the EPSConfiguration of the EPS

Subracks

EPS in full configuration in BM/TC separated configuration mode




Subracks

EPS in full configuration in BM/TC combined configuration mode




Subracks

EPS in full configuration in A over IPconfiguration mode



Configuration of the TCSConfiguration of the TCS

Subracks

TCS in full configuration when E1/T1 transmission is used on the A interface

By default, the TCS must be configured with the SCUa board and TNUa board. The DPUa/DPUc/DPUf board and EIUa/OIUa board are optional boards


Configuration of the TCSConfiguration of the TCS

Subracks

TCS in full configuration when STM-1 transmission is used on the A interface

By default, the TCS must be configured with the SCUa board and TNUa board. The DPUa/DPUc/DPUf board and EIUa/OIUa board are optional boards


Technical Specifications of the SubrackTechnical Specifications of the Subrack

Subracks

Item Specification

Dimensions 530.6 mm (height) x 436 mm (width) x 480 mm (depth)

Available space height 12 U (1 U = 44.45 mm = 1.75 inches)

Weight Empty subrack: 25 kg; subrack configured with boards: ≤ 57 kg

Power consumption in full configuration

•When the subrack is used to house the GSM service boards: MPS: ≤ 1,200 W •EPS: ≤ 1,200 W •TCS: ≤ 1,000 W•When the subrack is used to house the UMTS service boards: MPS: ≤ 1,560 W •EPS: ≤ 1,540 W

The technical specifications of the subrack refer to the dimensions of the subrack, available space height, weight, and power consumption in full configuration.


Boards

DPU Boards DPU Boards Functions Functions

DPU Boards

Encodes and Decodes Voice Services

Provides Data service rate adaptation

Provides Tandem Free Operation (TFO) function

Provides the Voice enhancement function

Detects voice faults automatically

Provides the speech format conversion and data forwarding functions(BM/TC Combined, A over IP/HDLC, Abis over IP/HDLC)

Processes the PS services on up to 1,024 simultaneously active PDCHs where signals are coded in MCS9

Processes packet links

Detects packet faults automatically

DPUa DPUc DPUd DPUf


Boards

DPU Boards DPU Boards Panel PanelLED Color Status Description


The board is functional.


The board is in loading state.

ON There is power supply, but the board is faulty.

OFF There is no power supply, or the board is faulty.

ALM Red OFF There is no alarm.

ON or blinking There is a fault alarm.

ACT Green ON The board is in active mode.

OFF The board is in standby mode.


Boards

DPU Boards DPU Boards Technical Specifications Technical SpecificationsItem DPUa DPUc DPUd DPUf

Dimensions 366.7 mm × 220 mm 366.7 mm × 220 mm 366.7 mm × 220 mm 366.7 mm × 220 mm

Power supply Two -48 V DC working in active/standby mode. The backplane of the subrack is responsible for the power supply.

Two -48 V DC working in active/standby mode. The backplane of the subrack is responsible for the power supply.

Two inputs of -48 V DC in active/standby mode. The backplane of the subrack is responsible for the power supply.

Two -48 V DC working in active/standby mode. The backplane of the subrack is responsible for the power supply.

Power consumption 60 W 49.40 W 49.40 W 80 W

Weight 1.26 kg 1.26 kg 1.26 kg 1.20 kg

Operating temperature (long-term)

0°Cto 45°C 0°Cto 45°C 0°Cto 45°C 0°Cto 45°C

Operating temperature (short-term)

-5°Cto +55°C -5°Cto +55°C -5°Cto +55°C -5°Cto +55°C

Relative humidity (long-term) 5% to 85% 5% to 85% 5% to 85% 5% to 85%

Relative humidity (short-term) 5% to 95% 5% to 95% 5% to 95% 5% to 95%

Processing capability Supporting 960 TCH/Fs; supporting 3,740 IWF flow numbers

Processing the PS services on up to 1,024 simultaneously active PDCHs where signals are coded in MCS9

Supporting 1,920 TCHFs Supporting 7,680 IWF flow numbers in the case of all-IP networking; Supporting 3,840 IWF flow numbers in the case of Abis over TDM or Ater over TDM


Boards

EIUa BoardEIUa Board

The EIUa board provides E1/T1 transmission for the BSC6900.The EIUa board performs the following functions:

• Provides four E1/T1 electrical ports for TDM transmission• Transmits, receives, encodes, and decodes 32 E1s/T1s. The E1 transmission rate is 2.048 Mbit/s; the T1 transmission rate is 1.544 Mbit/s • Processes signals according to the LAPD protocol • Processes signals according to the SS7 MTP2 protocol • Provides the Tributary Protect Switch (TPS) function between the active and standby EIUa boards • Provides the OM links when the TCS is configured on the MSC side • Supports the A, Abis, Ater, and Pb interfaces


RUN Green ON for 1s and OFF for 1s The board is functional.








OFF The board is in standby mode.Setting for 75-ohm Coaxial Cable ONSetting for 120-ohm Twisted Pair Cable OFF


Boards

FG2a BoardFG2a BoardAs an interface board, the FG2a board provides IP over Ethernet.The FG2a board performs the following functions:

• Provides eight channels over FE ports or two channels over GE ports • Provides the routing-based backup and load sharing • Provides the link aggregation function at the MAC layer • Supports the A, Abis, Gb, Iu, Iur, and Iub interfaces

Port Function Connector Type

FE(1) to FE(3) 10M/100M Ethernet ports, used to transmit 10/100M signals RJ45

FE/GE(0) 10M/100M/1000M Ethernet ports, used to transmit 10/100/1000M signals RJ45

2M0 and 2M1 Port for 2 MHz clock signal outputs SMB male connector



ON for 0.125s and OFF for 0.125s The board is in loading state.







LINK (at the Ethernet port) Green ON The link is well connected.

OFF The link is disconnected.

ACT (at the Ethernet port) Green OFF There is no data transmission over the Ethernet port.

Blinking There is data transmission over the Ethernet port.


Boards

FG2c BoardFG2c BoardAs an interface board, the FG2c board supports IP over Ethernet transmission.The FG2c board performs the following functions:

• Provides twelve channels over FE ports or eight channels over FE ports and four channels over GE ports • Provides the link aggregation function at the MAC layer • Provides the routing-based backup and load sharing • Supports the transmission of data over all its Ethernet ports on the basis of the synchronized clock signals • Supports the Abis, A, Gb, Iu, Iur, and Iub interfaces



ON for 0.125s and OFF for 0.125s The board is in loading state.







LINK (at the Ethernet port) Green ON The link is well connected.


ACT (at the Ethernet port) Orange OFF There is no data transmission over the Ethernet port.



100BASE-T 100M Ethernet ports, used to transmit 100M signals RJ45

100/1000BASE-T 100M/1000M Ethernet ports, used to transmit 100/1000M signals RJ45


Boards

GCUa/GCGa BoardGCUa/GCGa BoardThe GCUa/GCGa board performs the clock function.The GCUa/GCGa board performs the following functions:

• Extracts timing signals from the external synchronization timing port and from the synchronization line signals, processes the timing signals, and provides the timing signals and the reference clock for the entire system • Performs the fast pull-in and holdover functions on the system clock •Generates RFN signals for the system •Supports active/standby switchover. The standby GCUa/GCGa board traces the clock phase of the active GCUa/GCGa board. This ensures the smooth output of the clock phase in the case of active/standby switchover. •Receives and processes the clock signals and the positioning information from the GPS card












ANT Port for the GPS antenna. This port on the GCGa board is used to receive the timing signals and positioning information from the GPS satellite. This port is not used on the GCUa board.

SMA male connector

CLKOUT0 to CLKOUT9

Ports for providing synchronization clock signals. The ten ports are used to provide 8 kHz clock signals and 1PPS clock signals.

RJ45

COM0 Reserved RJ45

COM1 Port for RS422-level 8 kHz clock signals

RJ45

TESTOUT Output port for clock signals. The clock signals are used for testing.

SMB male connector

TESTIN Input port for testing external clock signals

SMB male connector

CLKIN0 and CLKIN1

Input port for BITS clock signals and line clock signals

SMB male connector


Boards

GOUa/GOUc BoardGOUa/GOUc BoardAs an optical interface board, the GOUa board supports IP over Ethernet.The GOUa board performs the following functions:

• Provides two(GOUa)/four(GOUc) channels over GE optical ports, which are used for IP transmission • Provides the routing-based backup and load sharing • Supports the A(GOUa/GOUc), Abis (GOUa/GOUc), Gb (GOUc) interfaces












LINK (optical port LED)

Green ON The link is well connected.


ACT (optical port LED)

Green OFF There is no data transmission over the Ethernet port.



RX Optical port, used to transmit and receive optical signals. TX refers to the transmitting optical port, and RX refers to the receiving optical port.

LC/PC

TX

2M0 and 2M1

Port for 2 MHz clock signal outputs SMB male connector

Item GOUa Specs GOUc Specs

Abis TRX 384 2,048

A CIC(64K) 6,144 23,040

Gb Maximum payload throughput (physical layer)

N/A 1,024 Mbit/s


Boards

OMUa/OMUb BoardOMUa/OMUb BoardThe OMUa/OMUb board works as a bridge for the communication between the Local Maintenance Terminal (LMT) and the other boards in the BSC6900.The OMUa board performs the following functions:

• Performs the configuration management, performance management, fault management, security management, and loading management functions for the system •Provides the LMT or M2000 users with the operation and maintenance port of the BSC6900 system, to control the communication between the LMT or M2000 and the SCUa board of the BSC6900

(1) Captive screw

(2) Ejector lever

(3) Self-locking latch

(4) RUN LED

(5) ALM LED

(6) ACT LED

(7) RESET Button

(8) SHUTDOWN Button

(9) USB port

(10) ETH0 Ethernet port



(13) COM port

(14) VGA port

(15) HD LEDs

(16) OFFLINE LED

(17) Hard Disks

(18) Screws for fixing the HD


RUN Green

ON for 1s and OFF for 1s The board is functional.


The board is being started.





ACT Green

ON The board is in active mode.

OFF The board is in standby mode, or the board is disconnected.

OFFLINE

Blue ON The board can be removed.

OFF The board cannot be removed.


The board is being switched over to the other working mode.

HD Green

OFF There is no read or write operation on the hard disk.

Blinking The hard disk is being read or written.


Boards

PEUa BoardPEUa BoardAs an interface board, the PEUa board supports E1/T1 transmission.The PEUa board performs the following functions:

•Provides 32 channels of IP over PPP/MLPPP over E1/T1•Provides 128 PPP links or 32 MLPPP groups, each MLPPP group containing 8 MLPPP links•Provides the Tributary Protect Switch (TPS) function between the active and standby PEUa boards•Transmits, receives, encodes, and decodes 32 channels of E1s/T1s. The E1 transmission rate is 2.048 Mbit/s; the T1 transmission rate is 1.544 Mbit/s.•Supports the Abis, Gb, and Iub interfaces













E1/T1 (0-7) E1/T1 port, used to transmit and receive E1/T1 signals on channels 0-7

DB44


DB44


DB44


DB44

2M0 and 2M1 Port for 2 MHz clock signal outputs SMB male connector

Item Specifications

Abis TRX 384

Gb Maximum payload throughput (physical layer) 64 Mbit/s


Boards

SCUa BoardSCUa BoardThe SCUa board provides the maintenance management and GE switching platform for the subrack in which it is located. Thus, the BSC6900 internal MAC switching is implemented and the internal switching in turn enables complete connection between modules of the BSC6900.

The SCUa board performs the following functions:• Provides the maintenance management function • Provides configuration and maintenance of a subrack or of the entire BSC6900 • Monitors the power supply, fans, and environment of the cabinet • Supports the port trunking function • Supports the active/standby switchover • Enables inter-subrack connections • Provides a total switching capacity of 60 Gbit/s • Distributes clock signals and RFN signals for the BSC6900











LINK (at the Ethernet port)

Green ON The link is well connected.


ACT (at the Ethernet port)

Green OFF There is no data transmission over the Ethernet port.



10/100/1000BASE-T0 to 10/100/1000BASE-T9

10M/100M/1000M Ethernet ports, used for the inter-subrack connection.

RJ45

10/100/1000BASE-T10 to 10/100/1000BASE-T11

10M/100M/1000M Ethernet ports, the two ports are unused in the BSC6900.

RJ45

COM Serial port for commissioning.

RJ45

CLKIN Port for reference clock signal inputs, used to receive the 8 kHz and the 1 PPS clock signals from the GCUa/GCGa board.

RJ45

TESTOUT Port for clock signal outputs. The clock signals are used for testing.

SMB male connector


Boards

TNUa BoardTNUa BoardThe TNUa board provides the TDM switching and serves as the switching center for the CS services of the entire system.

The TNUa board performs the following functions:• Provides 128K x 128K time slots TDM switching • Allocates the TDM network resources












TDM0 to TDM5 TDM high-speed serial ports, used to connect the TNUa boards in different subracks DB14


Boards

XPUa/XPUb BoardXPUa/XPUb BoardMain Control XPUa/XPUb/XPUb BoardThe main control XPUa/XPUb board has four /eightlogical subsystems.

Subsystem 0 of the main control XPUa/XPUb board is the Main Processing Unit (MPU). It is used to manage the user plane resources, control plane resources, and transmission resources of the system. The functions are described as follows:

• Managing the user plane resources; managing the load sharing of the user plane resources between subracks• Maintaining the load of the control plane within the subrack; exchanging the load information on the control planes between subracks• Providing functions such as the logical main control function of the BSC6900, the IMSI-RNTI maintenance and query, and the IMSI-CNid maintenance and query• Forwarding the RRC connection request message to implement the sharing of user plane resources and sharing of control plane resources in the BSC6900

Subsystems 1 to 3/1 to 7 of the main control XPUa/XPUb board belong to the CPU for Service (CPUS), which is used to process the services on the control plane. The functions are described as follows:

• Processing upper-layer signaling over the A, Um, Abis, and Ater interfaces• Processing transport layer signaling• Allocating and managing the various resources that are necessary for service setup, and establishing signaling and service connections• Processing RFN signaling


Boards

XPUa/XPUb BoardXPUa/XPUb BoardNon-Main Control XPUa/XPUb BoardThe non-main control XPUa/XPUb board has four /eight logical subsystems.

The four/eight subsystems of the non-main control XPUa/XPUb board belong to the CPUS, which is used to process the services on the control plane. The functions are described as follows:

• Processing upper-layer signaling over the A, Um, Abis, and Ater interfaces • Processing transport layer signaling • Allocating and managing the various resources that are necessary for service setup, and establishing signaling and service connections • Processing RFN signaling


10/100/1000BASE-T0 to 10/100/1000BASE-T3 10M/100M/1000M Ethernet ports RJ45

Processing capability of the main control XPUa board

Supporting 270 TRXs, 270 cells, 270 BTSs, and 492,000 Busy Hour Call Attempts (BHCAs)

Processing capability of the non-main control XPUa board

Supporting 360 TRXs, 360 cells, 360 BTSs, and 656,000 BHCAs

Processing capability of the main control XPUb board

Supporting 640 TRXs, 640 cells, 640 BTSs, and 1,148,000 BHCAs

Processing capability of the non-main control XPUb board

Supporting 640 TRXs, 640 cells, 640 BTSs, and 1,312,000 BHCAs


Cables

Power CablesPower CablesExternal power cables

Name Color Cross-Sectional Area (mm2)

Connector Type 1/Installation Position 1


Quantity

External -48 V power cable

Blue 25/35 2-hole JG terminal/-48 V DC input port on the power distribution box

OT terminal/-48 V DC output port on the PDF

Four per cabinet

External RTN power cable

Black 25/35 2-hole JG terminal/-48 V DC input port on the power distribution box

OT terminal/-48 V DC output port on the PDF

Four per cabinet

(1) OT terminal (2) 2-hole JG terminal


Cables

Power CablesPower CablesInternal power cables




Quantity


Blue 10 OT terminal/-48 V DC input port on the power distribution box

OT terminal/-48 V DC output port on the subrack

Two per subrack


Black 10 OT terminal/-48 V DC input port on the power distribution box


Two per subrack


Cables

Power CablesPower CablesInternal power cable for the independent fan subrack




Quantity


Blue 2 OT terminal/-48 V DC input port on the power distribution box


Two per independent fan subrack


Black 2 OT terminal/-48 V DC input port on the power distribution box


Two per independent fan subrack


Cables

PGND CablesPGND CablesCable Name Color Cross-Sectional

Area (mm2)


Connector Type 2/Installation Position 2 Quantity

External PGND cable Green and yellow

25/35 OT terminal/Grounding bolt at the top rear of each cabinet

OT terminal/PGND output port on the PDF

One per cabinet

Inter-cabinet PGND cable

Green and yellow

6 OT terminal/PGND busbar of each cabinet

OT terminal/PGND busbar of each cabinet

Three between every two adjacent cabinets

PGND cable for the power distribution box

Green and yellow


OT terminal/Port for PGND cable on the power distribution box

One per power distribution box

PGND cable for the subrack

Green and yellow


OT terminal/Port for the PGND cable on the subrack

Two per subrack

PGND cable for the cabinet door

Green and yellow

6 OT terminal/Grounding bolt on the base

OT terminal/Grounding bolt on the cabinet door

Eight per cabinet

PGND cable for the independent fan subrack

Green and yellow


OT terminal/Grounding point of the independent fan subrack

One per independent fan subrack

PGND cable for the independent fan subrack Other PGND cables


Cables

Active/Standby 120-ohm Twisted Pair CableActive/Standby 120-ohm Twisted Pair Cable

(1) DB44 connector (2) Metal case of the DB44 connector

(3) Label 1 (identifying a twisted pair cable) (4) Main label (identifying the code, version, and manufacturer of the cable)

(5) Label 2 (identifying a twisted pair cable)

X1 W3 Color X1 W4 Color

Pin of DB44 Connector

Signal Twisted Pair Cable Identifier

Pin of DB44 Connector

Signal Twisted Pair Cable Identifier

38 Ring/R-

R1 Blue 15 Ring/R-

T1 Blue

23 Tip/R+

White 30 Tip/R+

White

37 Ring/R-

R2 Orange

14 Ring/R-

T2 Orange

22 Tip/R+

White 29 Tip/R+

White

36 Ring/R-

R3 Green 13 Ring/R-

T3 Green

21 Tip/R+

White 28 Tip/R+

White

35 Ring/R-

R4 Brown 12 Ring/R-

T4 Brown

20 Tip/R+

White 27 Tip/R+

White

34 Ring/T-

R5 Grey 11 Ring/T-

T5 Grey

19 Tip/T+

White 26 Tip/T+

White

33 Ring/T-

R6 Blue 10 Ring/T-

T6 Blue

18 Tip/T+

Red 25 Tip/T+

Red

32 Ring/T-

R7 Orange

9 Ring/T-

T7 Orange

17 Tip/T+

Red 24 Tip/T+

Red

31 Ring/T-

R8 Green 8 Ring/T-

T8 Green

16 Tip/T+

Red 7 Tip/T+

Red


Cables

Inter-TNUa CableInter-TNUa Cable

(1) DB14 (2) Label (identifying a pair of twisted pair cables)

(3) Main label (identifying the code, version, and manufacturer of the cable)


Cables

Line/BITS Clock CableLine/BITS Clock Cable

(1) SMB connector/BNC (2) Label


Cables

Y-Shaped Clock CableY-Shaped Clock Cable

(1) Label (identifying a pair of twisted pair cables) (2) RJ45 connector


Cables

Monitoring Signal Cable for the Independent Fan Monitoring Signal Cable for the Independent Fan SubrackSubrack

InstallationThe DB15 connector at one end of the monitoring signal cable

for the independent fan subrack is connected to the MONITOR 0 port on the independent fan subrack. The DB9 connector at the other end of the cable is connected to the Monitor port on the

bottom subrack.


Cables

Monitoring Signal Cable for the Power Distribution BoxMonitoring Signal Cable for the Power Distribution Box

InstallationThe DB15 connector at one end of the monitoring signal cable for the power distribution box is connected to the corresponding port on the power distribution box. The DB9 connector at the other end of the cable is connected to the MONITOR 1 port on the independent fan subrack.

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BSC6900V900R011-R012 GO Hardware Description Issue1.0

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