[SIPForum-discussion] What is the use of record-route in 200 OK

[Fred Omosh]

Hi guys...I am new on the forum, and I apologise for asking a question that
may have been answered here previously.  Could someone provide me with any
information that references how i could learn how to read a SIP syslog

On 7/24/08, Raghul Prasanna <raghul82 at yahoo.co.uk> wrote:
>
>   Hi Vikas,
>
> From
> http://www.ietf.org/internet-drafts/draft-ietf-sip-record-route-fix-03.txt
>
> 'Record-Route rewriting in responses is not the most optimal way of
> handling multi-
>    homed and transport protocol switching situations.  Additionally, the
>    consequence of doing rewriting is that the route set seen by the
>    caller is different from the route set seen by the callee, and this
>    has at least two negative implications:
>
>    Callee cannot sign the route set, because it gets edited by the
>    proxy in the response.  Consequently, end-to-end protection of the
>    route set can not be supported by the protocol.  The openness and
>    end-to-end principles are broken...'
>
>   From http://www.tech-invite.com/Ti-sip-dialog.html
>
>   I can see that record route is not rewritten by proxy in 200 ok although
> record route is rewritten by proxy in ACK for 200 ok.
>
>   So as you have stated rewriting of record route by the proxy can be your
> problem but I am not sure why the call flow shows record route rewriting in
> ACK.
>
>   Hopefully someone could explain.
>
> Thanks,
> Raghul
>
> --- On *Wed, 23/7/08, VG <vikasraigupta at gmail.com>* wrote:
>
>
> From: VG <vikasraigupta at gmail.com>
> Subject: [SIPForum-discussion] What is the use of record-route in 200 OK
> To: discussion at sipforum.org
> Date: Wednesday, 23 July, 2008, 3:20 PM
>
>  Hi All,
>
> I like to know what is the use of record-route in 200Ok msg.
> I got a invite from A with two record-route and i send with 2 record-route
> to B.
>
> When I got 200ok from B then I get only one record route from my proxy,
> Now I am sending this msg containg 1 record route to A.
>
> But rtp doesn't travel in this case.
> So I like to know whether record-route is the thing that is creating
> problem.
>
> Regards,
> Vikas
>
>
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