... /1550nm 3.prompt delivery 4.good price ethernet optical modemSpecifications fiber modem, optical modem fiber converter, media converter PDH, fiber ... mux, fom, fiber multiplexer, optical muxOptical Fiber ModemOP-FE1 Fiber Modem Modulate 1 E1 signal ... :Comply with G.832 standards. ConnectorQ9(75Ω),RJ45(120Ω) Frame structure:Optional (2)V.35 data interfaceRate: N*64Kbit/ ...