After installation was able to call out but only some specific incoming rang the phone or connected. Oddly, it seemed T-mobile could get through while AT&T and Verizon could not. The following came from OBI support and fixed the problem (appreciated). The only wrinkle was that in my gmail view in Chrome I had to drill down and call from a phone number in a contact record (Google Talk phone icon appears next to phone numbers).
1. Login to your Google Voice account
2. Go to "Settings" located on the top right (cog wheel)
3. On the Phone tab, you will see a "Delete" option under Google Chat
4. Click "Delete" Google Chat
5. Open a new browser and login in to www.gmail.com using your Gmail account. You will see Gmail Call Phone (located on the bottom left corner).
6. Make a call out from your Gmail Call Phone
7. Once you have done so, you should appear again in https://www.google.com/voice#phones
8.Make sure to check the checkbox for Google Chat
Try calling your Google Voice number again