Principles of Configuring the BSC Devices (BM/TC Separated)

This describes the principles of configuring the BSC cabinets, subracks, and boards with the BM/TC separated.

Cabinet

The principles of configuring the BSC cabinets are as follows:

Only one GBCR cabinet can be configured on the BSC side, and up to three GBSR cabinets can be configured on the BSC side or the MSC side.
By default, the GBCR cabinet, numbered 0, is displayed on the LMT. The newly added cabinets are numbered in sequence.
The cabinet placed on the BSC side is called local cabinet. It holds the GEPS and the GTCS.
The cabinet placed on the MSC side is called remote cabinet. It holds only the GTCS.
Each cabinet must be configured with a power distribution box and a subrack must be specified for managing the power distribution box.

Subrack

The principles of configuring BSC subracks are as follows:

The GMPS is mandatory for the BSC. Each BSC must be configured with one GMPS and zero to three GEPSs.
By default, a GMPS is configured in cabinet 0 of the BSC. The newly added subracks must be configured from bottom to top.
The GMPS attributes, GEPS and its attributes, GTCS and its attributes, and the boards in these subracks, must be configured in sequence.
A maximum of four GTCSs can be configured, and they must be configured in only one cabinet on the BSC side or on the MSC side.
Each subrack is configured with a fan box. The fan box is added automatically when you add a subrack.
If the BSC is configured with the GBAM, a pair of active/standby GGCUs, a pair of active/standby GTNUs, and a pair of active/standby GSCUs are configured in the GMPS by default. If the BSC is configured with the GOMU, a pair of active/standby GGCUs, a pair of active/standby GTNUs, a pair of active/standby GSCUs, and a pair of active/standby GOMUs are configured in the GMPS by default. By default, a pair of active/standby GTNUs and a pair of active/standby GSCUs are configured in the GEPS/GTCS. All the boards except for the GOMU can be deleted only when you delete the subracks where these boards are located.

Board

The principles of configuring the BSC boards are as follows:

The A interface, Abis interface, Ater interface, Pb interface (when the BSC is configured with an external PCU), and Gb interface (when the BSC is configured with a built-in PCU) support the E1/T1, STM-1, and FE/GE transmission modes. In addition, the Abis interface supports the HDLC transmission mode, apart from the previous modes. The E1/T1, STM-1, and FE/GE transmission modes can coexist in one subrack. To facilitate configuration and maintenance, Huawei recommends that one interface use one type of interface boards. Do not configure two types of interface boards together.
To ensure the system reliability, Huawei recommends that all the boards, except for the GDPUC/GDPUX/GDPUP, be configured in active/standby mode.
The GOIUA, GOIUB, GOIUP, and GOIUT support the APS function. If the GOIUB, GOIUP, and GOIUT are configured in active/standby mode, the APS function is enabled by default.

If the BSC is configured with the GBAM, the GGCU, GSCU, and GTNU are configured by default. If the BSC is configured with the GOMU, the GGCU, GSCU, GTNU, and GOMU are configured by default. Table 1 lists the principles of configuring the boards except for those configured by default.

**Table 1** Principles of configuring the BSC boards
Board	Configuration Principle
GDPUC	The GDPUC is configured in the GTCS. The number of GDPUCs to be configured depends on the system specifications. The GDPUC supports only the independent mode.
GDPUX	The GDPUX is configured in the GMPS/GEPS/GTCS. The number of GDPUXs to be configured depends on the system specifications. The GDPUX supports the resource pool mode.
GEIUA/GOIUA	The GEIUA and GOIUA are configured in the GTCS. The numbers of boards to be configured depend on the system specifications. The GEIUA and GOIUA support the independent mode and the active/standby mode. The active/standby mode is recommended. The GEIUA and the GOIUA can be configured in one subrack if required.
GEIUB/GOIUB/GFGUB/GOGUB/GEHUB	The GEIUB/GOIUB/GFGUB/GOGUB/GEHUB is configured in the GMPS or the GEPS. The number of boards to be configured depends on the system specifications. The GEIUB/GOIUB/GFGUB/GOGUB/GEHUB supports the independent mode and the active/standby mode. The active/standby mode is recommended. The GEIUB and GOIUB can be configured in one subrack if required. When the BSC communicates with the BTS in TDM transmission mode, the GEIUB and the GOIUB are configured. When the BSC communicates with the BTS in HDLC/HUB transmission mode, the GEHUB is configured. When the BSC communicates with the BTS in IP transmission mode, the GFGUB and the GOGUB are configured.
GEIUP/GOIUP	The GEIUP/GOIUP is configured when the BSC is configured with the external PCU. The GEIUP and GOIUP are configured in the GTCS. The numbers of boards to be configured depend on the system specifications. The GEIUP/GOIUP supports the independent mode and the active/standby mode. The active/standby mode is recommended. The GEIUP and the GOIUP can be configured in one subrack if required.
GEIUT/GOIUT	The GEIUT and GOIUT are configured in the GMPS, GEPS, or the GTCS. The numbers of boards to be configured depend on the system specifications. The GEIUT and GOIUT support the independent mode and the active/standby mode. The active/standby mode is recommended. The GEIUT and the GOIUT can be configured in one subrack if required.
GEPUG/GFGUG	When the BSC is configured with the built-in PCU, the GFGUG/GEPUG is configured in the GMPS or the GEPS. When the Gb over FR transmission mode is applied, configure the GEPUG. When the Gb over IP transmission mode is applied, configure the GFGUG. The GFGUG and GEPUG support the independent mode and the active/standby mode. The active/standby mode is recommended.
GDPUP	When the BSC is configured with the built-in PCU, the GDPUP is configured in slots 8 through 10 housing the GMPS/GEPS. The GDPUP supports the resource pool mode.
GXPUM	The GXPUM is configured in the GMPS or the GEPS. The number of GXPUMs to be configured depends on the system specifications. The GXPUM supports the independent mode and the active/standby mode. The active/standby mode is recommended.
GXPUT	The GXPUT is configured in the GMPS or the GEPS. The number of GXPUTs to be configured depends on the system specifications. The GXPUT supports the independent mode and the active/standby mode. The active/standby mode is recommended.

NOTE:

On the BSC6000 Local Maintenance Terminal, the types of boards that can be configured depend on the type of the subrack that holds the boards and the serial numbers of slots in the subrack. Table 1 provides the recommended configurations of the boards. You can modify the configurations according to actual requirements.