Hello I have an incoming call and the callback associated with 'on_incoming_call' is invoked. OK Now, before answering, the caller disconnects (sends a SIP CANCEL) but nor 'on_call_state callback nor on_call_tsx_state cakllback are triggered how can I detect a SIP CANCEL? thx -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20120307/0df4be14/attachment.html>