Huawei SmartAX MA5600T Hardware Description page 607

SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
Working Principle
Figure 3-114 Working principle of the H807ADPE board
Backplane
Control
board
-48V
DC
power
The basic working principle of the H807ADPE board is as follows:
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Issue 24 (2018-07-30)
H807ADPE
GE
Interface
module
Voltage required
by the board
Service
signal
The control module loads the board software, controls the running of the board, and
manages the entire board.
The protection module protects and isolates the board from lightning strikes. The DC
block isolates the direct current. The protector protects the high voltage.
The splitter module separates POTS signals from ADSL2+ signals over the subscriber
line.
The interface module supports two functions:
– In the upstream direction, the interface module converts line signals into a cell flow,
aggregates the flow to the forwarding module, and then reorganizes the flow into
ATM packets.
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Forwarding module
Protection module
DC
block
Control
module
Power Clock
module module
Clock required
by the board
Control Power
signal signal
Front panel
Protector
LINE0
LINE1
SPL
module
PSTN0
PSTN1
Clock
signal
3 Board
ATU-R
PSTN
587