[SR-Users] Lost 180 Ringing Response

[John Billings]

> 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.