The OBi110/OBi100 is a very small and low power ATA device that allows you to use your land line phone to make and receive free calls through Google Voice without a separate computer or device to be running.

Since the original post on how to use Gizmo5 for free calls with Google Voice, many things have changed so I figured that guide could use a bit of an update. When the integration of Google Voice and Gizmo first came about, Google Voice was still in beta and invite only, you could openly register [...]