- 32 logical E1 interfaces. Hardware can be expanded to 128 E1 

- Digital PCM exchange, time slot 1024*1024 and no block

- Suitable for various trunks such as loop, carrier, E&M, E1. Supports Chinese No.1, No.7, R2, PRI and etc. signaling.

- 100 8-digit special offices, 12 equal-digit offices, 20 mobile offices

- Concentrated billing management, to materialize various billing modes.

- Support FSK/DTMF caller ID display and transmit/receive control caller ID etc

- Hot redundant technology; system has high reliability and can work under harsh environment