Huawei SmartAX MA5600T Hardware Description page 689

SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
Working Principle
Figure 3-128 Working principle of the H806VCPE board
Backplane
Control
board
-48V
DC
power
The basic working principle of the H806VCPE board is as follows:
l
l
l
l
Issue 24 (2018-07-30)
H806VCPE
10GE
GE/
10GE
Forwarding
module
Control module
Power
module
Voltage required
by the board
Service Control
signal signal
The control module loads the board software, controls the running of the board, and
manages the 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 VDSL2 signals over the subscriber
line.
The interface module provides two functions:
– In the upstream direction, the interface module converts line signals into cell flows,
aggregates the cell flows to the forwarding module, and then reassembles the cell
flows into ATM/PTM packets.
– In the downstream direction, the interface module converts the ATM/PTM cell
flows sent from the forwarding module into line signals that are transmitted
downstream.
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Framer
Protection
module
module
DC
block
Interface
module
Protector
SPL module
Clock
module
Clock required
by the board
Power Clock
signal signal
3 Board
Front Panel
LINE1
VTU-R
LINE0
PSTN1
PSTN0 PSTN
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