... function, run more stably.With the function of pseudo-random code testing, convenient for opening of the circuit, and can be ... used as an error code instrument. With three LoopBack Modes: FE1 interface LoopBack (ANA ... consumption: <5WFE1 InterfaceLine Rate : n×64Kbps,n=1~32 Line Code : HDB3Interface Standard: ITU-T G.703FE1 Impedance : 75Ω(unbalance) and ...