The SHEA board is a 32channel SHDSL service board.It provides the ATM SHDSL access services and supports line protection. The SHEB board is a 32-channel SHDSL.bis service board. It provides the ATM/PTM SHDSL.bis access services and supports line protection. The SHEA/SHEB board can be installed in slots 0-6 and 9-15 of the MA5600 service shelf,or in slots 1-6 of the MA5603. External connections of the SHEA board: External connections of the SHEB board: The modules and working principles of the SHEB board are the same as those of the SHEA board. Their only difference is that the SHEB board accesses SHDSL.bis signals.The following takes the SHEA board as example. Working principles of the SHEA board: The basic working principles of the SHEA board are as follows: * The control module loads the board software, controls the running of the board, and manages the entire board. * The power module supplies power to each functional module o...
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