Quote Originally Posted by VOIPoBrandon View Post
He has a registration interval of 1 minute as well as OPTION ping requests he is sending us in which he is stating that our response to requests are delayed. I tracked each of his requests and as you can see an actual delay in response is few and far in-between and certainly not service impacting.
The expiry interval for registration is actually 120 seconds (asterisk always renews at expiry-15 seconds, so 105 seconds in this case).

In any case, I'm updating the case with packet captures to show the behavior that is concerning. There are periods of time where the server simply stops responding to all SIP requests -- registration, options, invites. I'm sorry, but that is service impacting when call setup traffic is not being processed.