I have an issue with a SIP trunk connecting and registering. The trunk has been working for weeks with no issues.
I initially looked into the issue and stopped and restarted the Intrusion Detection service and it seemed to clear the issue. This was a coincidence I believe now as the trunk is still not registering.
This is what i have tried:
1.contacted the SIP trunk provided and they have checked their settings are correct and the trunk is online. They have connected a test setup and its working.
2.Im able to ping the SIP host from the PBX VM.
3.Under SIP settings (chan_sip) I have changed from static to public IP to test.
4. Changed NAT to yes and never to test.
5. put the PBX in a DMZ (so no firewall)
Outgoing Trunk SIP Settings:
Nothing has changed and no updates have been done the trunk has just started to fail to register with no reason.
I think can see its using port 5160 to register but its set for 5060 so im confused. The provider needs me to use port 5060.
Some guidance would be greatly appreciated.