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

[Stephen James]

Q.1915.5 indicates a bye should sent if the dialog is established. 

Sent from my iPad

> On Jan 18, 2014, at 1:49 AM, Murali ZTE <muralizte at hotmail.com> wrote:
> 
> 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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