fiber optic modem FE1, V.35 PDH, fiber mux, fom, fiber multiplexer, optical multiplexer fiber converter, media converter Fiber Optic ModemOP-FE1 Fiber Modem Modulate 1 E1 ... Resistance:75Ω (non-equilibrium), 120Ω (balanced) Features of interface:Comply with G.703 and G.704 standards. Whipping ... be connected with DTE, DCE equipment, and in case of tailing connection with DCE the line is crossed. Please ...