BSC Boards

This describes the boards in the BSC.

The logical boards are formed by loading different software to the physical boards. Table 1 lists the boards in the BSC.

**Table 1** Boards in the BSC
Physical Board	Logical Board	Full Spelling of Logical Board
OMUb	GOMU	GSM Operation and Maintenance Unit
GCUa	GGCU	GSM General Clock Unit
SCUa	GSCU	GSM Switching and Control Unit
TNUa	GTNU	GSM TDM switching Network Unit
XPUa	GXPUM	GSM eXtensible Processing Unit for Main service
	GXPUT	GSM eXtensible Processing Unit for Transmission
	GXPUI	GSM eXtensible Processing Unit for Computation service
EIUa	GEIUB	GSM E1/T1 Interface Unit for aBis
	GEIUP	GSM E1/T1 Interface Unit for Pb
	GEIUT	GSM E1/T1 Interface Unit for aTer
	GEIUA	GSM E1/T1 Interface Unit for A
OIUa	GOIUB	GSM Optic Interface Unit for aBis
	GOIUP	GSM Optic Interface Unit for Pb
	GOIUT	GSM Optic Interface Unit for aTer
	GOIUA	GSM Optic Interface Unit for A
FG2a	GFGUA	GSM Fast ethernet and Gigabit ethernet Unit for A
	GFGUB	GSM Fast ethernet and Gigabit ethernet Unit for aBis
	GFGUG	GSM Fast ethernet and Gigabit ethernet Unit for Gb
GOUa	GOGUA	GSM Optic Gigabit ethernet Unit for A
GOUa	GOGUB	GSM Optic Gigabit ethernet Unit for aBis
PEUa	GEHUB	GSM E1/T1 High level Data Link Control Unit for aBis
PEUa	GEPUG	GSM E1/T1 Packet Unit for Gb
DPUc	GDPUX	GSM Data Processing Unit for eXtensible service
DPUd	GDPUP	GSM Data Processing Unit for PS service
DPUa	GDPUC	GSM Data Processing Unit for CS service
-	PFPU	Fan Power Unit
-	PFCU	Fan Control Unit
-	PFCB	Fan Control Board
-	MDMC	Distribution Monitor and Communication board
-	WOPB	Overvoltage Protection Board

GEIUA
The GEIUA is the GSM E1/T1 Interface Unit for the A interface. It can be installed in slots 18-25 in the GMPS/GEPS/GTCS. The GEIUA can be configured in pairs and work in active/standby mode.
GEIUB
The GEIUB is the GSM E1/T1 Interface Unit for the Abis interface. It can be installed in slots 18-27 in the GMPS/GEPS. The GEIUB can be configured in pairs and work in active/standby mode.
GEIUP
The GEIUP is the GSM E1/T1 Interface Unit for the Pb interface. It can be installed in slots 14-15 in the GMPS/GEPS. The GEIUP can be configured in pairs and work in active/standby mode.
GEIUT
The GEIUT is the GSM E1/T1 Interface Unit for the Ater interface. It can be installed in slots 16-17 in the GMPS/GEPS and in slots 14-17 in the GTCS. The GEIUT can be configured in pairs and work in active/standby mode.
GGCU
The GGCU is the general clock unit of the BSC. Two GGCUs should be installed in slots 12-13 in the GMPS and should work in active/standby mode.
GOIUA
The GOIUA is the GSM Optic Interface Unit for the A interface. It can be installed in slots 18-25 in the GMPS/GEPS/GTCS. The GOIUA can be configured in pairs and work in active/standby mode.
GOIUB
The GOIUB is the GSM Optic Interface Unit for the Abis interface. It can be installed in slots 18-27 in the GMPS/GEPS. The GOIUB can be configured in pairs and work in active/standby mode.
GOIUP
The GOIUP is the GSM Optic Interface Unit for the Pb interface. It can be installed in slots 14-15 in the GMPS/GEPS. The GOIUP can be configured in pairs and work in active/standby mode.
GOIUT
The GOIUT is the GSM Optic Interface Unit for the Ater interface. It can be installed in slots 16-17 in the GMPS/GEPS and in slots 14-17 in the GTCS. The GOIUT can be configured in pairs and work in active/standby mode.
GOMU
This describes the GSM Operation and Maintenance Unit (GOMU). It serves as the server in the BSC. It can be installed in slots 20-23 in the GMPS and work in active/standby mode.
GSCU
The GSCU is the GSM Switching and Control Unit. It is installed in slots 6-7 in the GMPS/GEPS/GTCS. The GSCU is configured in pairs and work in active/standby mode.
GTNU
The GTNU is the GSM TDM switching network unit in the BSC. It is installed in slots 4-5 in the GMPS/GEPS/GTCS. The GTNU is configured in pairs and work in active/standby mode.
GXPUM
The GXPUM is the GSM eXtensible Processing Unit for Main service in the BSC. It can be installed in slots 0-1 in the GMPS/GEPS and work in active/standby mode.
GXPUT
The GXPUT is the GSM eXtensible Processing Unit for Transmission in the BSC and processes signals according to the LAPD protocol and SS7 MTP3 protocol. When the number of TRXs to be supported by the GMPS/GEPS is greater than 256, the GXPUT can be installed in slots 2-3 in the GMPS/GEPS and work in active/standby mode.
GXPUI
The GXPUI is the GSM eXtensible Processing Unit for Computation service in the BSC and implements the IBCA algorithm. It can be configured in slots 2-3 in the GMPS/GEPS and does not work in active/standby mode.
GFGUA
The GFGUA is the GSM Fast ethernet and Gigabit ethernet Unit for the A interface. It can be installed in slots 18-27 in the GMPS/GEPS. If the BSC need not process packet services, the GFGUA can be installed in slots 14-15. The GFGUA can work in active/standby mode and work independently.
GFGUB
The GFGUB is the GSM Fast ethernet and Gigabit ethernet Unit for the Abis interface. It can be installed in slots 18-27 in the GMPS/GEPS. If the BSC need not process packet services, the GFGUB can be installed in slots 14-15. The GFGUB can work in active/standby mode and work independently.
GFGUG
The GFGUG is the GSM Fast ethernet and Gigabit ethernet Unit for the Gb interface. It can be installed in slots 14-15 in the GMPS/GEPS. The GFGUG can work in active/standby mode and work independently.
GOGUA
The GOGUA is the GSM Optic Gigabit ethernet Unit for the A interface. It can be installed in slots 18-27 in the GMPS/GEPS. When the BSC need not process packet services, the GOGUA can also be installed in slots 14-15. The GOGUA can work in active/standby mode and work independently.
GOGUB
The GOGUB is the GSM Optic Gigabit ethernet Unit for the Abis interface. It can be installed in slots 18-27 in the GMPS/GEPS. When the BSC need not process packet services, the GOGUB can also be installed in slots 14-15. The GOGUB can work in active/standby mode and work independently.
GEHUB
The GEHUB is the GSM E1/T1 High level Data Link Control Unit for the Abis interface. It can be installed in slots 18-27 in the GMPS/GEPS. When the BSC need not process packet services, the GEHUB can also be installed in slots 14-15. The GEHUB can work in active/standby mode and work independently.
GEPUG
The GEPUG is the GSM E1/T1 Packet Unit for the Gb interface. It can be installed in slots 14-15 in the GMPS/GEPS. The GEPUG can work in active/standby mode and work independently.
GDPUC
The GDPUC is the CS service processing unit in the BSC. When E1/T1 interface boards are installed in the GTCS, the GDPUC can be installed in slots 9 to 13. When STM-1 interface boards are installed in the GTCS, the GDPUC can be installed in slots 1 to 3 and slots 8 to 13.
GDPUX
The GDPUX is the GSM Data Processing Unit for eXtensible services. It can be installed in slots 8-11 in the GMPS; slots 0-3, 8-13, and 14-27 in the GEPS; and slots 0-3, 8-13 in the GTCS.
GDPUP
The GDPUP is the GSM Data Processing Unit for PS services. It can be installed in slots 8-13 in the GMPS/GEPS.
MDMC
The MDMC is the power monitoring communication board for the BSC common power distribution box. It is configured in the power distribution box at the top of the GBCR/GBSR. Each power distribution box should be configured with one MDMC.
PAMU
The PAMU is the power monitoring communication board for the BSC high-power distribution box. It is configured in the power distribution box at the top of the GBCR/GBSR. Each power distribution box should be configured with one PAMU.
PFCU
The PFCU is the fan control unit. It is installed in the front of a fan box. Each fan box must be configured with one PFCU.
PFCB
The PFCB is the fan control board. It is installed in the front of a fan box. Each fan box must be configured with one PFCB.
WOPB
The WOPB is the overvoltage protection board in the BSC. It is placed in the power distribution box. Each Common power distribution box should be configured with one WOPB.

Parent topic: BSC Hardware Description