Huawei SE2900 - Page 14

HUAWEI SE2900 Session Border Controller
Hardware Description
1 Service Processing Device
Issue 01 (2016-01-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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Figure 1-8 F8002 subrack power supply mode
Logical Structure
Figure 1-9 shows the logical structure of the F8002 subrack.
Figure 1-9 F8002 subrack logical structure

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.