Hello,

maybe you can reproduce the same situation using tcp and grab a network trace (ngrep with at least -t) for such a call to see what woould be the difference of time between those packets. Maybe the transaction is already destroyed.

Cheers, Daniel

On 09/10/15 16:22, John Billings wrote:

...

Hello,

look at:

http://kamailio.org/docs/modules/stable/modules/tm.html#tm.p.cancel_b_method

Maybe one or another value for that parameter is suiting better your use case.

Thank you for the suggestion.

This looked promising, but the cancel_b_method parameter is already at the default value of one. I also tried changing the value to two and got a similar result.

This may sound crazy, but it almost seems like the problem happens only when kamailio is processing unrelated INVITES at the same time. _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users