... , V35 optical fiber modem PDH, fiber mux, fom, fiber multiplexer, optical multiplexer fiber converter, media converter Optical Fiber ModemOP-FE1 Fiber Modem Modulate 1 E1 signal to single or multi mode fiber, transmission ... rate from 64Kbps to 2,048Kbps.OP-V35 Fiber Modem ...