Huawei SmartAX MA5600T Hardware Description page 493

SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
Working Principle
Figure 3-91
Figure 3-91 Working principle of the H808ASPB board
Control
board
-48V
DC
power
The basic working principle of the H808ASPB board is as follows:
l
l
l
l
l
l
The service process is as follows:
Issue 24 (2018-07-30)
illustrates the working principle of the H808ASPB board.
Backplane
H808ASPB
GE
Interface
Voltage required
Service
signal
The control module processes the high-level protocol between the H808ASPB board and
the control board, manages the service ports of the H808ASPB board, controls the DSP
module, and controls the GE interface module.
The subscriber line interface module provides 64 channels of the POTS service.
The processing module converts the pulse code modulation (PCM) data into IP voice
packets, and supports the decoding/encoding and the echo suppression functions.
The GE interface module supports the GE communication between the H808ASPB
board and the control board.
The power module supplies power to each functional module of the board.
The clock module provides clock signals for each functional module of the board.
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GE
Processing
module
module
Control module
Power Clock
module module
Clock required
by the board
by the board
Control Power
signal signal
3 Board
User side
64*POTS
Interface
PSTN
module
MELT
Test
module
Clock Test
signal signal
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