We're using OBi200, firmware 3.2.2 (Build: 5921EX), with Google Voice.
We're getting the 603 message (rejected by service provider) when calling a local college campus. Also calling the local Domino's will result in the 603 message. We must reboot the OBi200 to make other calls. If we don't reboot the OBi200, we get the following message when attempting to call any other number: "...has not received a response from the service provider." After the reboot, we can call any number we try except the college campus and the Domino's (might possibly be other numbers that trigger the 603 message).
This is a new pattern, noticed a few days ago. We've used the OBi200 to call the college campus for at least a year with no problems.
Note that I have tried removing the OBi200 from Google Voice and OBiTALK and then doing a factory reset using the button on the bottom of the OBi200. And then starting over with setup...
Please advise.
Thank you.