Features 1. Integrates audio, data and video in one system. 2. All the interfaces comply with the international standard. 3. Various service interface, including: E1, 10/100Base-Tx, V.35, Audio and Video, 64Kbps, V.35(N*64K), RS232 / RS485, FXO/FXS, magnet telephone, hot line telephone, E&M etc. 4. Unified...