e1 line tester:E1 interface bit error test IP Ping test V ... to 2048kb/s with supported interfaces ofG.703, V.24/RS232, V.35, V.36/RS449, X.21, EIA-530/530A ... to ITU-T recommendation V series interfaces testing- V.24/RS232, V.35, V.36/RS449, EIA-530/530A, X.21 ... hours operation-Large data storage, 5000 records Applications:Specifications: E1 line tester