... optical modem FE1, E1, V.35 PDH, fiber mux, fom, fiber multiplexer, optic multiplexer fiber converter, media converter Fiber Optical ModemOP-FE1 Fiber Modem ... , transmission rate from 64Kbps to 2,048Kbps.OP-V35 Fiber Modem Modulate 1 V.35 signal to single or multi mode ... /60Km/120Km single mode. G.703 E1, V.35 fiber optical modem