Grandstream / UCM6302A / IP PBX (Audio Only)
Grandstream / GXW4108 / 8 FXO Ports Gateway
Grandstream / UCM6308A / IPPBX 8 FXO Port 8 FXS Port 1500 users 200 Concurrent Call Gateway
Grandstream / UCM6304A / IP PBX (Audio Only)
Grandstream / UCM6204 / IPPBX 500 Users 50/75 Concurrent Call Gateway