It's widely used in data communication networks. Connect with v.35 interface of routers and optical transmission equipments without g.703 interface, realize match between different network equipments, and transparent to upper protocol layer. Main characters: realize data transparent transmission in the e1 line. Bandwidth : 2048kbps supply e1 interface with 75 ohm unbalanced and 120 ohm balanced. Support e1 auto loop function, convenient to be tested and put into use. Parameters: e1 interface: in compliance with itu-t g.703 line code: hdb3, self-contained indication output of route alarm. Bit rate: 2048kbps ã¢â± 50ppm impedance: 75ohm unbalanced physical interface use coaxial connector with bnc standard, 120ohm balanced physical interface use rj45 v.35 interface interface mode: dce interface type: db25 rate: 2048kbps working conditions: power: ac220vã¢â±20% dc-36~-72v power consumption: