[Astlinux-users] SIP Options ping not working

[Michael K. <mic...@ip...>]

Back to the ongoing saga of SIP Options ping not working. This one is a bit different though. Here is the scenario:


  *   Can SSH into box fine and network connectivity is fine
  *   Find IP Address based SIP Trunk is UNREACHABLE. Can ping provider from the box
  *   Asterisk SIP Debug shows SIP Options sent but none received. This is also the case using tcpdump on the ppp0 interface
  *   Asterisk reload and Firewall restart did not fix the problem. The system needed a full reboot for the trunk to be REACHABLE

So my questions are:

  1.  Is tcpdump BEFORE the firewall?
  2.  Can you think of what the issue could be?
  3.  What tests should I do next?

Unfortunately (or fortunately) this happens very infrequently so the fix will be a long confirmation period.

Thanks all!

Regards
Michael Knill