That message means what it says. Your device is not configured correctly.
What Obi device do you have? If an OBi202, which Phone port is the phone plugged in to?
Which of SP1 or 2 or 3 or 4 have you configured for GV?
Which line of your two-line phone rings on incoming GV calls?
Is GV the only service you have configured? If not is/are the other(s) working incoming and outgoing?