Telecom FM Onestream G is a dual SIM GSM Gateway that connects to the SIP trunk ports of a VoIP Telephone System. The Telecom FM Onestream G uses standard mobile phone SIM cards to enable extension users to make and receive calls over the mobile phone network.

OneStream G acts as a SIP Registrar which means that when connected to your VoIP enabled phone system it works just like a SIP Trunk. This means that installation is as simple as adding extra SIP trunks to your phone system.
Onestream G Fatures
- Acts as a SIP Registrar to provide easy connection as a SIP Trunk for all types of IP PBX VoIP Phone System
- Locally and Remotely configurable via user-friendly Web Interface
- Acts as SIP Client, Registrar and Proxy for maximum flexibility
- T.38 Fax Support (Fax over IP)
- Virtual Extensions feature allows remote workers to place calls on hold and transfer calls as if they were using a desk extension
- GSM Inclusive Minutes Management allows the best use to be made of SIM Inclusive Minutes
- SMS sending and receiving including Missed Call SMS Notification
- Caller ID Detection and Regeneration
- Echo Cancellation and Volume Controls on all Channels
- Remote Diagnostics and Future-proof Firmware Upgrade Facility
The Onestream is our recommended alternative to the Portech MV372 VoIP GSM Gateway for Asterisk and 3CX phone systems. The Onestream G uses high quality Siemens GSM modules for great call quality and is easier to configure.











