Huawei SmartAX MA5600T Hardware Description page 223

SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
Working Principle
Figure 3-5 Working principle of the H801SCUB board
The basic working principle of the H801SCUB board is as follows:
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Issue 24 (2018-07-30)
The control module manages the H801SCUB board and service boards, and
communicates with the fan tray through the extended serial port.
The power module supplies power to other functional modules of the board.
The clock module provides clock signals for other functional modules of the board.
The switching module provides the GE port to switch and aggregate services at Layer 2
or Layer 3.
– Providing 16 GE ports to implement GE switching on each service board
– Providing four GE ports for upstream transmission using the control board or
upstream board (in the first of the two slots for the upstream board), which is
controlled by the electronic switch.
– Providing four GE ports for upstream transmission using the upstream board (in the
second of the two slots for the upstream board). Either the last GE port or VoIP
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