128 SIM Slots GSM VoIP Gateway

32 GSM Channels with 128 SIM Slots, Easy to Conduct SIM Rotation

GSM: 850/900/1800/1900MHz; CDMA: 800MHz; WCDMA: 850/900/1900/2100MHz

Built-in Bandwidth Saving, Signaling&RTP Encryption

HTTP API for Bulk SMS

Auto Call/SMS Generation

Auto Update SIM Number and Balance Check

No Balance Alarm and Call Minutes Limitation