... rate from 64Kbps to 2,048Kbps.TECHNICAL SPECIFICATION:(1)G.703 E1 interface Rate: n*64Kbit/s (n=1~32) Code ... Ω (non-equilibrium), 120Ω (balanced) Features of interface:Comply with G.703 and G.704 standards. Whipping feature:Comply with G.832 ... distance: 2Km multi-mode, 40Km/60Km/120Km single mode. G.703 E1, V.35 fiber optical modem