Anysun Quad Band GSM 4 Gateway 4 Channel GSM Voip Gateway Support VPN & IMEI change&SMS,4 GSM Chips (GoIP-4)
GOIP-4 GSM VoIP Gateway with External Antenna, 4 GSM Channels, up to 4 SIM Cards, Quad band, IMEI Changeable, Remote Access, VLAN / Qos, Easy to Install and Administrate, Auto Balance and Recharge.GoIP is designed to work in conjunction with key phone systems and IP-PBX to provide GSM communications. The extensive compatibility of the GoIP makes it an ideal choice to be deployed in multi-vendor open architecture VoIP networks. GoIP is a great way to pro ...