OBi100 VoIP Telephone Adapter and Voice Service Bridge Use with SIP Service ONLY - Does NOT Support Google Voice Easy to Set-Up Using OBiTALK.com Also Supports SIP Bring Your Own Device Services like Anveo Callcentric, Voip.ms, etc. Calling Features: Call Waiting, 3-Way Calling, Call Forward, Caller ID, Telemarketer and Anonymous Caller Blocking 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