Quad Band GSM 4 Gateway 4 Channel GSM Voip Gateway Goip

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4 ports 4 sim cards GSM VOIP gateway GOIP Frequency: GSM 850/900/1800/1900MHZ.

It is ideal for VoIP to Local termination where a fixed telephone line (PSTN) is not available or for cellphone roaming via the a VoIP network.

Significant savings on long distance charges can be realized.

Open Standard VoIP Protocols (ITU H.323 V4 and IETF SIP V2) Single or Multiple Server Registrations.

Two 10/100 Ethernet circuits connect to the LAN and an additional device GSM module for making GSM calls.