H838ASPB Is 64-channel POTS service boards
Huawei MA5600 Series Voice Board H838ASPB Overview
The H838ASPB board is a 64-channel POTS service boards that provide the POTS access service.
H837ASPB has the same functions as H838ASPB; therefore, H837ASPB can substitute for H838ASPB.
Compared with H837ASPB and H838ASPB, H839ASPB supports direct current-isolated (DC-I) grounding.
The basic working principles of the H837ASPB, H838ASPB, and H839ASPB boards are as follows:
The codec module encodes and decodes voice signals and converts analog signals to digital signals.
The subscriber-line interface module provides access to 64 channels of POTS services.
The protection module protects and isolates the board from lightning strikes.
The MCU module processes the upper-layer protocol messages between the board and the control board and manages user ports of the board.
The power module supplies power to other function modules of the board.
Function and Feature