Strange, I had this issue with FiOS and Localphone, and wasn't able to get it resolved. I switched to Circle Net and everything works fine.
Here's what I did:
1) I deleted both of my services in my OBI dashboard, and rebooted the OBI.
2) I then went to the OBI's web interface via its IP address, did the factory reset there, and rebooted once again (this second step seems duplicative, but I've had mixed experiences with the OBI and changing providers and read about this 2-step reset process a few years back).
3) I then logged into the Dashboard and set up Circlenet via the Dashboard. I selected
Voice Service Provider Setup, click
Next under Obi-Talk Compatible Service Providers, and then selected
Generic service provider.
Configuration Name: Circlenet
Service Provider Proxy Server :
outbound.circlenet.usService Provider Proxy Server Port: 5060
Outbound Proxy Server:
outbound.circlenet.usOutbound Proxy Server Port: 5060
User Name: <Enter your user name>
Password: <Enter your password>
URI: leave this field blank.
Once again, reboot the OBI after you save the settings -- just in case.
When it comes back on line, you can go to the IP address of the OBI and check the settings. Status should be registered, and the above server settings should appear in the ITSP Profile - SIP page and the username/password should show in the Voice Services tab.
I don't have any special port forwarding active on my router for my OBI. If you do, try deleting them and rebooting the router.
Then try to make a call. If it doesn't work, check the CALL STATUS page on the OBI and see what you see during the call. If you are getting one-sided audio, you may only see one CODEC, rather than one for each direction. Take a screenshot of that and post it (or provide it to Sam) as that may be helpful.