Works with Google Voice for FREE calls to the USA and Canada through the end of 2012 - Great international rates too!
VoIP Telephone Adapter (ATA) and Analog Line Gateway Supports: GV and SIP Services; Callcentric, Sipgate, Vitelity, Voip.ms, etc.
Make free calls on the OBiTALK Network - Connect to other OBi Devices or use the free OBiON for iPhone application or OBiAPP for your PC.
OBi Calling Features: Caller ID, Call Forward, Anonymous Caller Blocking, Message Waiting Indication, Three Way Conference Calling
OBiTALK Portal Features: Manage Your OBi, Connect to Your Friends' OBi Devices, Add Services, Download Apps for PC, Speed Dial Up to 99 OBi Endpoints or Phone Numbers