The document describes the boards and connectivity of an Evo BSC 8200 mobile network node. It includes descriptions of the main processor board (APZ), maintenance board (APG), capacity board (EPB), Ethernet switch (NWI-E), exchange terminal (Evo ET), control boards (SCXB, CMXB), and power distribution. It also shows the logical connectivity within the BSC using multiple VLANs for internal and external connectivity.

1. Evo BSC 8200
BSC Rack and Boards with Cable
Connectivity and brief Description

2. Evo BSC 8200 Front view

3. Main Sub Rack of BSC

4. Evo BSC 8200 boards layout

5. Board Description(1/1)
• APZ is the Central Processor of the BSC and the executive is
running on it.Also called CPUB-A,CPUB-B.MAU Maintenance
Unit board which controls the Switch Over.
• APG is a processor with a Hard Disk and you login to this from
Local maintenance Terminal. From OSS you directly login to
the APZ where the executive is running. All the database and
backup files ,raw counters, command/user logs are stored on
this card.

6. Board Description(1/2)
• EPB (Evo Processor Board)is the capacity defining card for
the BSC like CCP+GPU+MT120 in case of Alcatel and
SPU,DPU,XPU in case of Huawei, all the functions like
transcoding,CS and PS traffic is handled by this card.One
EPB card has 2 processors with 8 cores and they work in
N+1 redundancy. Out of the 8 processors 7(RP regional
Processors) can be used for equipage and 1 is left alone as
central processor. But the redundancy is achieved on the
processor level not on the board level.EPB handles the CTH
and GPH(CS,PS)you can configure one EPB for both CS and
PS.

7. Board Description(1/3)
• NWI-E Network Interface Ethernet Switch which is the interface
between BSC LAN and Operator side LAN.It is the switch with
provides GE interface for SIGTRAN,A/IP,OOS,GB/IP
• Evo ET (Evo Exchange Terminal) is the interface card used to
handle TDM traffic for Abis Chains. Yellow fibers in the above
snaps depict the Abis STM that are terminated on the ODF.
• SCXB Switch Control board is used to carry node internal control
traffic and clock distribution. It is also used for connection with
the slave sub rack. There two SCXB cards per Sub rack work in
Master and Slave
• CMXB Component Main Switching Board provided the 10Gbps
connections for the user plane traffic. The board works in 1+1
redundancy

8. BSC Sub Rack Left Hand side

9. BSC Sub Rack Right Hand side

10. Power Distribution Unit of BSC(1/1)

11. Power Distribution Panel(1/2)

12. Optical Distribution Panel(ODF) for
Abis

13. BSC Logical Connectivity(1/1)
• Multiple VLAN are required for the BSC IP
connectivity. Some VLANs are for BSC internal
connectivity with the different boards and
internal processes and applications. The internal
VLAN uses 192.168.x.x IP range.
• For logging onto the BSC through the
LMT(WinFOIL),you use the following settings
System IP 192.168.200.2
Subnet mask 255.255.255.0
BSC IP 192.168.200.1

14. BSC Logical Connectivity(1/2)