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Configuration Rules of the Boards

This section describes the configuration rules and reference information related to the BSC6900 boards.

Classification of Boards

Table 1provides the classification of the BSC6900 boards.

Functions of boards

The BSC6900 boards provide different functions when being loaded with different software, as described in Table 2.

Table 1 Board classification

Board Class Board Type Logical Function Type

Interface board PEUa IP

FR

HDLC

Abis_IP

EIUa/OIUa Abis_TDM

Ater_TDM

A_TDM

Pb_TDM

POUc TDM

IP

FG2a IP

GbIP

UOIa ATM

IPAEUa/AOUa/AOUc/UOIc ATM

GOUa/GOUc/GOUd/POUa/FG2c/FG2d IP

Data Processing Unit (DPU) DPUa/DPUc/DPUf GTC

DPUb GTC

GPCU

UUP

DPUd/DPUg GPCU

DPUe GPCU

UUP

Network Intelligence Unit(NIU) NIUa NIU

Signaling Processing Unit (XPU) SPUa/SPUb GCP

UCP

RGCP

RUCP

MCP

XPUa/XPUb GCP

RGCP

MCP

TDM switching Network Unit (TNU) TNUa TDM_Switching

Operation and Maintenance Unit (OMU) OMUa/OMUb/OMUc OAM

Service Aware Unit (SAU) SAUa/SAUc SAU

Table 2 Functions of boards

Logical Function Type Description

OAM Operation and maintenance management

TDM_Switching TDM switching

GCP All the subsystems are configured as CPU for Service (CPUS) subsystems, which are usedto process the services in the control plane of the GSM BSC.

UCP All the subsystems are configured as CPU for Service (CPUS) subsystems, which are usedto process the services in the control plane of the UMTS RNC.

RGCP Subsystem 0 is configured as the MPU subsystem, which is used to manage resources. Allthe other subsystems are configured as CPUS subsystems, which are used to process theservices in the control plane of the GSM BSC.

RUCP Subsystem 0 is configured as the MPU subsystem, which is used to manage resources. Allthe other subsystems are configured as CPUS subsystems, which are used to process the

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NOTE:

l Boardsprovides the replacement relationships of boards.

l Each MPU subsystem can manage a maximum of 23 CPUS subsystems. It is recommended that you configure each MPU subsystem to manage a maximum of 15 CPUSsubsystems.

For example, you must configure one XPUb/SPUb board out of every three pairs of XPUb/SPUb boards to be of the logical type RGCP/RUCP. It is recommended that you configureone XPUb/SPUb board out of every two pairs of XPUb/SPUb boards to be of the logical type RGCP/RUCP.

l It is recommended that the services of the boards in each subrack be controlled by the MPU subsystem in the same subrack to avoid a large data flow transmitted between subracks.

l It is recommended that service processing boards and interface boards be evenly distributed among subracks to reduce data exchanging between subracks.

l It is recommended that interface boards, XPU/SPU boards, and DPU boards be evenly distributed in each subrack.

Parent topic: Data Configuration Principles for Equipment

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services in the control plane of the UMTS RNC.

MCP Interference-based channel allocation

GTC GSM speech service processing

GPCU GSM packet service processing

UUP UMTS RNC user plane processing

ATM ATM interface processing

IP IP interface processing

FR FR interface processing

HDLC HDLC interface processing

TDM TDM interface processing

GbIP GbIP interface processing

Abis_TDM TDM-based Abis interface processing

Ater_TDM TDM-based Ater interface processing

Pb_TDM TDM-based Pb interface processing

A_TDM TDM-based A interface processing

Abis_IP IP-based Abis interface processing

SAU Service aware unit

NIU Network Intelligence Unit

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