... BERT tester, 2M Data tester - 2M testing -Datacom testing(V.24, V.35, X.21...) -G.703 CO testing Transmission Analyzer, 2M BERT ... -service 2Mb/s, N×64kb/s BER testing2) Datacom testingDatacom (V.24, V.35, V.36, X.21, RS-449, RS-485, EIA-530 ... (Optional)Line Rate64kb/s ± 100ppmLine Interface120Ω, BalancedLine CodeAMIDatacomLine InterfacesV.24, V.35, V.36, X.21, RS-449, RS-485, EIA-530, EIA ...