Hi. I'm a newbie also.
I read through these messages, and I think I'm having the same issue, in setting up GV. I can't make or receive calls yet with the GV/OBI200.
In reading the posts, it seems that I have to 'revert' to google chat to make a call, so that my GV connects to my Obi200 correctly. In GV, I can't figure out how to revert to google chat to make that call.
In GV, I can't find how/where to forward calls to my GV number via chat. Frustrated :/