Use OBiBT to Make and Receive Calls on the OBi202 Via a Mobile Phone Service
The Obihai OBiBT Bluetooth Wireless Adapter allows a USB equipped OBi device like the OBi202 to pair with a mobile phone so you can place calls and answer calls using your standard home cordless and corded phones connected to the OBi. The OBiBT works with most mobile phones using Bluetooth wireless technology. After the initial pairing between the mobile phone and the OBiBT has been set-up, when your mobile phone is in 'Bluetooth range" of the OBiBT, it will connect to your mobile phone automatically.
Obihai OBi202 VoIP Telephone Adapter