The Telecom FM OneStream VoIP GSM gateway is ideal for use as a SIP trunk device for use with VoIP Telephone Systems for calls to the GSM mobile phone network.
The Telecom FM OneStream SIP unit will ideally be used as a SIP Trunk unit for any SIP based Voice Over IP Telephone System. The unit will use 2 SIM cards for 2 simultaneous calls from the PBX to the mobile phone network using standard SIM Cards.