CVN-E1RS is E1 line conversion equipment to standard interface RS232/RS485 with data rate 9600 and 19200 bps (selectable); giving fractional service for E1 line. Providing the transfer of data 64 kbps to E1 service and also give to detect to incoming signal LOS (loss of signal), there are mode of transfer of signaling that is CCS (common channel signaling) and CAS (channel associated signaling). This equipment has reliable performance, efficient power consumption and easy usage. Features Standard G.703 fractional E1 and G.704 for E1 service E1 data rate 64 kbps, RS232/RS485 data rate 9600 bps or 19200 bps Standard RS232 according to CCITT V.24/V.28, RS485 EIA-ISO 8482