quad serial datacom card V.35/X.21/RS-232 for FMUX01A
PDH modular fiber optic multiplexer chassis, up to 16 T1 / E1, POTS and true Fast Ethernet
4 T1 RJ48c 100ohms module for FMUX01APLUS
4 FXS PSTN phone set line module for FMUX01APLUS
4 FXO PSTN phone trunk line module for FMUX01APLUS
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