Client Digium which was upgraded to 6.1.2 from 5x, and seemingly now they are experience problems with inbound calls.
Tested and verified the issue.
If a person calls in once, they can get through. Hang-up, Call through again, works fine. Call again, call failed.
Recorded a packet capture, and in the it I see “Status-Line: SIP/2.0 403 Forbidden” on the Status line and Reason : “Reason: Q.850;cause=21” (Call Rejected)
Why would switchvox/asterisk reject some inbound calls but not others.
I’ll be glad to post the full frame of the pcap if needed. This client is a busy medical facility, so I can’t post the full pcap unedited.
I do have a ticket in with Digium, but if I can fix this myself and learn something in the process, I’d love to do so.