1. Rackmount 2U height;
2. All-in-one device, supports E1/ISDN, FXO/FXS, GSM/CDMA/WCDMA/4G LTE, Radio/PTT/Audio/VHF/UHF, E&M/Magnet, SIP&SIP user;
3. Built-in with MIPS card for installing customers' software;
4. MCU slot *1, PSU-built-in, LPU slot *4;
