[SIPForum-discussion] The missed Call with PRACK terminated using BYE or Cancel

[Aniella Juverdeanu]

I don't think is correct to have BYE - it should be CANCEL - I always see it. Another example is if the caller got announcement - 183 and PRACK - then CANCEL

From: discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org] On Behalf Of Murali ZTE
Sent: January 17, 2014 11:50 PM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] The missed Call with PRACK terminated using BYE or Cancel

Hello Guys,

I have one query regarding PRACK for the following scenario  my SIP client sending BYE message instead of Cancel.Is it right behavior? because the session is not established for the initial INVITE.or its behaving correctly because of PRACK.Could anyone explain this behaviour ?

UAC-------INVITE-------------->UAS
UAC<-----1xx------------------>UAS
UAC<-----180(Rseq)----------UAS
UAC--------PRACK(Rack)--->UAS
UAC<-----200 OK(PRACK)--UAS
UAC-------- BYE-------------->UAS


Thanks and Regards
Murali
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