Right forum, wrong topic. You should have started a new one as your problem is unrelated to GV changes.
If a reboot (ie power cycle) of your Obi doesn't fix things, start a new topic and give more details including for example.
Previous and current ISPs.
Previous and current routers.
What model OBi.
Diagnostic steps taken so far and results.
What happens when you dial the test number **9 222 222 222.
What happens when you dial ordinary numbers.
Are incoming calls working,
And anything else you think is relevant especially if your setup was or is now in any way unusual.
