[SIPForum-discussion] : Invite Cancel Response sequence

[arun singh]

Please read  RFC 3261 section 9(Canceling a Request) -->section 9.2 Server
Behavior




On Wed, Oct 7, 2009 at 4:10 PM, chethan prakash <chethan.ps at gmail.com>wrote:

> Hello All,
>
> Can you please kindly clarify if there is anything wrong the below
> mentioned INVITE Cancel Response Sequence,
>
> UE 1                                    UE 2
>     --------------INVITE----------------->
>     <---------- 100 Trying---------------
>     <---------- 180 Ringing-------------
>     -------------CANCEL---------------->
> *    <---------- 487 (INVITE)------------*
> *    <---------- 200 OK (CANCEL)----*
>
> Please forward me the RFC Section where it is stated that on receiving
> cancel we should respond to Cancel Request first before we send final
> response to Invite Request.
>
>
> Regards,
> Chethan
>
>
>
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