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The GSM VoIP Gateway connects to any SIP compatible VoIP PBX and allows routing of calls to and from the GSM cellular network.
Take advantage of your mobile operators calling plans to ring your perr group of mobile phones at greatly reduced rates than landline to mobile.
With 1SIM, 1LAN, SMS for GSM-VoIP connection, GSM termination & origination, SMS sending & receiving, Quad band 900 1800 850 1900MHz; SIP Asterisk compatible;