Maybe I came to to wrong conclusion. Someone else posted similar problem today. I have entered various sip accounts and a GV account as well. They all work locally, however all of my efforts result in the following message:
"Status Backing Off (879s):Authentication error"
Since it is confirmed that you can enter passwords via the OBi Expert, then something elsewhere is the problem. Hmmm?
BTW, I had preconfigured a sip account on the OBi before sending it away overseas connecting to my PBX in Canada. I can report that the call quality is the best I've ever had, better than using Skype or Rebtel voip service. I was using the 729 codec. It looks like Rebtel just lost a customer. I was also able to make local calls using the PSTN line of the OBi. The people on the other end said it sounded like I was making a local call.
When things work it's sweet.