E1V35RS232 interface converter is designed for the transformation between RS232 (V. 24) and E1, or between N×64Kb/s V. 35 and E1 interface. The E1 interface adopts Siemens-type L9 coaxial as physical connector, and the RS232/V. 35 interface adopts DB15 type. The power feeding can be of AC220 or DC-48V. The RS232 interface rates 0-57. 6Kbps. The V. 35 interface rates N×64Kbit/s, N=1-32 to make the bandwidth flexible and frame/unframed also flexible. The timing mode can be set to DTE or DCE. With a small dimension and good reliability, the interface converter is used in data communication and SCADA systems