Working Principle
Figure 3-135 Working principle of the H80DSDPM board
The basic working principle of the H80DSDPM board is as follows:
l The control module loads the board software, controls the running of the board, and
manages the entire board.
l The protection module protects and isolates the board from lightning strikes. The DC
block isolates the direct current. The protector protects the high voltage.
l The forwarding module converts between the ATM/PTM service and the IP service, and
also supports flow control and scheduling.
l The framer module forwards vectoring data.
l The interface module provides the ports for information exchange.
l The power module supplies power to each functional module of the board.
l The clock module provides clock signals for each functional module of the board.
The service process is as follows:
l In the upstream direction, the interface module converts the VDSL2 signals into a cell
flow, aggregates the flow to the forwarding module, and then reorganizes the cell flow
into ATM/PTM packets. The forwarding module encapsulates the reorganized
ATM/PTM packets and performs CAR on the ATM/PTM packets to convert them into IP
packets. The IP packets are transmitted to the backplane bus through the backplane port
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
3 Board
Issue 24 (2018-07-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
708
To Next Page
Loading...
Need help?
General
