1.48channel PDH/ PCM multiplexer 2.2-wire loop,4-wire ... ethernet with 10/100Mbps FT-50A PCM Multiplexer can be configured as PDH fiber/electrical integrator, 4E1 48 cross ... High Integration and Flexible Configuration-Can be configured as PDH fiber/electrical integrator, 4E1 48 cross-connect channel ... E1 interfaces, 75Ω or 120Ω is optional.* 4E1 PDH interface card: access 4 E1sRemark: MST and Power board ...