Huawei SE2900 Hardware Description page 14

HUAWEI SE2900 Session Border Controller
Hardware Description
Figure 1-8 F8002 subrack power supply mode
Logical Structure
Figure 1-9
Figure 1-9 F8002 subrack logical structure
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Issue 01 (2016-01-15)
shows the logical structure of the F8002 subrack.
The MXUs implement subrack management and data exchange in the subrack.
The MXUs work in active/standby mode. Only the active MXU executes management
tasks. The MXUs also manage the two fan trays through the RS485 bus and the two
PEMs through the Inter-integrated circuit (I2C) bus.
The service data and signaling data from a service board is forwarded in eFabric
channels to the MXUs through the backplane. The MXUs then forward the data to
another service board.
The management data from a service board is forwarded in Base channels to the MXUs
through the backplane. The MXUs then forward the data to another service board.
The power distribution box (PDB) in the subrack provides two DC power supplies to the
subrack.
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1 Service Processing Device
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