[SIPForum-discussion] Offer-answer

[Tomasz Zieleniewski]

Hi,

No. it's not possible. The UAS can send provisional responses only when
server transaction is in the Proceeding state. When there is a fina 2xx
response sent server transaction transitions directly to the terminated
state.

Kind regards,
- Tomasz Zieleniewski

ICT Backyard - http://ictbackyard.com
---------------------------------------------------------------------------------
"Tomorrow is today - nevertheless tomorrow" - S.Mrożek



2011/6/29 mrinal kuila <mrinal.80 at gmail.com>

> Hi  Forum,
>
> Coiuld you please answer my below question.
> Once offer answer is complete Is it possible to UAS to send more 18x
> responses?
>
>          UAC               UAS
>         |----INVITE------>|
>         |                 |
>          |<----18x (o)-----| - provisional responses with REQUIRE 100rel
>          |                 |
>          |-----PRACK(a)--->| - send PRACK with answer
>          |<---- 2xx--------|                 |
>           |                 |
>          |                 |
>          |<----18x --------| - >         |                 |
>         |-----PRACK------>|
>          |<----2xx---------|
>
>               200OK
>         <-----------------
>          ------------------>
>               ACK
>
>
> Regards
> Mrinal
>
> _______________________________________________
> This is the SIP Forum discussion mailing list
> TO UNSUBSCRIBE, or edit your delivery options, please visit
> http://sipforum.org/mailman/listinfo/discussion
> Post to the list at discussion at sipforum.org
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20110630/befab6dc/attachment-0002.html>