Hi Kalpesh ,

To understand SIP MESSAGE handing in network, please go through  RFC
5438 : Instant Message Disposition Notification.

Regards,
Sumit Jindal

On Sun, Dec 26, 2010 at 2:51 AM, Iñaki Baz Castillo <i...@aliax.net> wrote:
> 2010/12/24 Saúl Ibarra Corretgé <sag...@gmail.com>:
>> From the UAS part perspective in the PBX side, the message was> successfully 
>> received so a 200 OK could be appropriate.
> .
> Hummm, same could be said for INVITE ("as the INVITE arrives to the
> B2BUA it can reply 200") which obviously is not realistic. :)
>
>
> IMHO it just easier:
>
> Alice                 B2BUA                   Bob
> --- MESSAGE ------->
>                              ------- MESSAGE  -->
>                              <----------- 200 ----------
> <--------200 ---------------
>
>
> Of course, being a B2BUA, Call-ID and From/To tags would be different
> in both legs.
>
>
> --
> Iñaki Baz Castillo
> <i...@aliax.net>
>
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-- 
Regards,
Sumit Jindal

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