OKAY. Mystery partly solved. I dialed 411 once again and at the same time went to the OBI110's call status web screen. I was hearing what sounded like a rapid busy to me, but OBI110 says the line was ringing!
Now it turns out that when you call 411 or 17771234567 (a different 411 service), CallCentric lets it ring many times before "picking up" - (I guess they don't really want to handle the call? Even though it is just a computer driven voice reco -service ) ...
So while I was looking at the status screen... Lo ... Callcentric finally answers....!
While ringing the OBI110 status screen shows "peer-ringing" -
Question: which device at which end is generating that sound that seems like a fast busy, but is actually a ring? Anyway I can change this? If it's at Callcentric's side, how come when I call it from an OBI100 or an X-Lite phone, it sounds like the more familiar, usual ring signal?