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

[AOEKING]

Hi Murali,

Here's what I found from the specification (
http://tools.ietf.org/html/rfc3262#page-6)

"The provisional response MUST establish a dialog if one is not yet
created."

According to above statement the client behavior is correct.

Thanks,
Nuwan


On Sat, Jan 18, 2014 at 1:19 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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