Now, pick up the phone, refresh the web page, and look again at the voltages (you will need to quickly navigate back to the PHONE port section). It should now show "Off hook", with lower voltages, in the range of 18V and 7-12V. If it does, then that telephone and the OBi are electrically OK. Now, hang up, pick up the phone again, and call **9 222 222 222 and hear what happens? You should hear a man say "Welcome to OBiTALK...."
If not, have you recently changed anything at all with your internet service (new modem, new router, changed DNS)?