Smart Phone apps such as Talkatone & GrooveIP, and also calls from within GMail, use the Google Chat feature of Gmail. They all sign into your Google account the same way the Obi does. This creates a conflict for them to work at the same time. Generally the last one to log in, or renew a log in, is the only one that works correctly.
When another application takes control of Google Chat, the Obi still has the ability to place outgoing calls using the Google account. It does not receive incoming calls for Google Chat.