No Calls Inbound or Outbound since this morning


We run an asterix server with an elastix front end, we have been in talks with our SIP provider who say everything is fine their end but we have not changed anything on the server end yet we have no calls in or out.

I have tried restarting the server to no affect.

Can anybody give me some advice on troubleshooting this please?

Do a port 5060 trace on your boundary router.

sip show registry (check if asterisk it registered with your SIP trunk provider).

qualify=yes (set the qualify option to yes for, for check if the remote peer is alive)
and then run the command sip show peers
Verify any nat issue.

Check Asterisk logs