Huawei SmartAX MA5600T Hardware Description page 554

SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
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The service process is as follows:
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Issue 24 (2018-07-30)
The forwarding module processes and sends the input information to the backplane bus
through the backplane interface.
The power module supplies power to other functional modules of the board.
The clock module provides the working clock for other functional modules of the board.
In the upstream direction, the interface module transmits line signals to the forwarding
module. The forwarding module reassembles the cell flows into ATM packets, converts
the ATM packets into Ethernet packets, and performs CAR on the Ethernet packets. The
Ethernet packets are transmitted to the control switch and then to the backplane bus
through the backplane interface.
In the downstream, the forwarding module reassembles the Ethernet packets from the
backplane bus into ATM packets, and then transmits the ATM packets to the interface
module. The interface module then converts the ATM packets into analog signals, and
transmits the analog signals over the subscriber line.
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