[sr-dev] t_check_trans with in-dialog requests

Hugh Waite hugh.waite at crocodile-rcs.com
Fri Jul 12 17:11:07 CEST 2013

I have a question on the use of t_check_trans for in-dialog requests.

If an in-dialog INVITE is challenged by kamailio (sending a 407 
response), the ACK should be absorbed. However, the t_check_trans 
function does not terminate the script. In our config, this means the 
ACK gets sent to the client due to the route-set.

Should t_check_trans recognise that this transaction was rejected 
locally, even though there is an onward route-set?


Hugh Waite
Principal Design Engineer
Crocodile RCS Ltd.

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