[Kamailio-Users] Add Reason Header in CANCEL request (forked call)

heinz huber heinzhuber3 at gmx.net
Mon Nov 30 10:38:02 CET 2009

Hi everyone,

I've the following question:

Is it possible to add a reason header in a CANCEL request? This is helpful in the following scenario: A call gets forked by the proxy (since there are more contacts for one AOR). On the of the SIP-destination-UAs accepts the call and sends a 200 OK to the proxy. The proxy afterwards generates the CANCEL request for all open UAC transactions. In this case it would be helpful to add additional infos, like "Call completed" elsewhere, so that the call is not listed in the "missing calls" list in the destinations UAs.

I've found a linke in the tracker on 


Has this feature been included in the last official kamailio version, or is it still open.

thx && br
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