... Tester is a comprehensive test tool with E1, V port, Gigabit Ethernet link maintenance and failure diagnose. FunctionsG.703 E1 circuit FAS ... alarm, error type insertslip code testV series interface testV.24/RS232, V.35 interface error testvarious working mode setITU ... , IP QOS, PRBS code type settingtraffic statistic: make statistics for Tx/Rx frames, utilization rate, error frame, different length ...