Obihai had officially announced Obi devices are supported by Google Voice. With a Google Voice account and a companion OBi device you can make and receive VoIP calls on a regular home phone. Obihai adapters have been around since 2011, with the latest update and the Google Voice official integration, the installation process is easier than before.
Missing Forwards calls to Google Chat Option in Google Voice solution
Forwards calls to Google Chat is an important option for people who are using Google Voice as free VOIP solution. In order to able to receive calling, forwards calls to Google Chat option must be activated so the VOIP adapter can acts as a Google Chat to receive calling, eg: OBi Devices. Without that, the phone will never ring when people call your Google Voice number. If the Google Voice Account was newly set up, in default the “Forwards calls to Google Chat” option is inactivated. Google didn’t provide any selectable option for adding the option to Google Voice. 