Huawei SmartAX MA5600T Hardware Description page 475

SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
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The service processing is as follows:
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Issue 24 (2018-07-30)
The narrowband service processing module encodes and decodes narrowband voice
services and converts analog signals into digital signals. It then sends narrowband voice
services to the forwarding module through the S3MII interface.
The forwarding module converts broadband signals and narrowband signals into
10GE/GE signals for upstream transmission through the backplane.
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 splitter module separates signals over the subscriber line
into POTS signals and VDSL2 signals. The broadband interface module then sends
VDSL2 signals to the broadband service processing module, and the narrowband
interface module sends POTS signals to the narrowband service processing module.
After that, signals from the broadband and narrowband service processing modules are
aggregated to the forwarding module. The forwarding module reassembles the cell flow
into PTM packets, encapsulates the PTM packets into IP packets, and performs CAR on
the IP packets. Controlled by the logic switch, the IP packets are transmitted to the
backplane bus through the backplane GE or 10GE interface.
In the downstream direction, the forwarding module decapsulates the IP packets sent
from the backplane bus, performs CAR on the packets, reassembles the packets into
PTM packets, and then transmits them to the broadband and narrowband service
processing modules. The interface module then converts the PTM packets into analog
signals, and transmits the analog signals over the subscriber line through the splitter
module.
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