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

[Avinash Mudaliar]

Hello All,
I'm new to SIP world. Just started with curriculum. 
Are we getting BYE since session has been established i.e. i can see 200OK which signifies call has been answered. 
Correct me here if i am wrong.
Thanks,Avinash MudaliarCCIE # 41817 (Voice), RHCE

Date: Thu, 23 Jan 2014 14:47:29 -0800
From: fossil0681 at yahoo.com
To: muralizte at hotmail.com; discussion at sipforum.org
Subject: Re: [SIPForum-discussion] The missed Call with PRACK terminated	using	BYE or Cancel

It is not the expected behavior. Per the rfc CANCEL should be used in this scenario.  Thanks,Keyur Amin   

 
     On Thursday, January 23, 2014 3:44 PM, 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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