What does the Call History on your OBi device show for those calls?
I had a somewhat similar issue happen to me yesterday on my OBi110. Even though my
VoIP.ms trunk was registered I couldn't receive any inbound calls. Outbound calls worked fine. I checked the CDR on the
VoIP.ms portal and I could see the incoming calls were hitting
VoIP.ms as expected. I then used a softphone and registered to the same account. Incoming calls worked fine so I knew the problem was with my OBi device. I futzed around for about half an hour trying to figure out the problem but I had made no changes and could see no issue.
So I blew away my
VoIP.ms configuration on the OBi and remade it. That got things working again and it's been fine since. You might try registering to Anveo with a softphone if that's an option for you and see if things work or not. At some point you have to measure your time spent troubleshooting against simply deleting and remaking your Anveo trunk configuration.