Detecting loss of Registrsation

Hi Folks,

 

I am looking for a way to get immediate notification on 6.2, preferably via a trap, when a registering SIP trunk becomes unregistered. 

 

Are there currently any traps that we can trigger, say when the SBC removes the entry from its local cache? Does this removal cause a demotion of the endpoint to the untrusted queue that triggers a syslog message or trap?

 

The issue is that the customer side equipment doesn't appear to be able to generate a timely error so trunk can be done for up to an hour before it is detected on the core side.