[SIPForum-discussion] Reg: Invite(SDP) from UAC to UAS and 200 OK(SDP) from UAS to UAC.

[Abhisek Acharya]

The above scenario also can happen for devices behind the NAT as well where
the media IP is discovered by STUN.so it is a common scenario.

Regards
Abhisek Acharya
PUNE

On Fri, Oct 5, 2012 at 3:29 AM, Stephen James <sjames_1958 at yahoo.com> wrote:

> The o= and c= lines can be different, the c= line is where the RTP is to
> be sent. The o= line refers to the originator of the SDP, and if different
> from the c= line means that the originator and the bearer planes (RTP) are
> at different IP addresses?
>
> Stephen James
> sjames_1958 at yahoo.com
>
> We are not princes of the earth, we are the descendants of worms, and any
> nobility must be earned.
>
>
> ------------------------------
> *From:* Michael Scofield <amit.chhikara at hotmail.com>
> *To:* "discussion at sipforum.org" <discussion at sipforum.org>
> *Sent:* Thu, October 4, 2012 2:47:34 PM
> *Subject:* [SIPForum-discussion] Reg: Invite(SDP) from UAC to UAS and 200
> OK(SDP) from UAS to UAC.
>
>  Hi All,
>
>
>                  UAC
>                                                                        UAS
>
> (10.10.10.10)
> (10.20.10.10)
>                                                Invite(SDP)
>
> --------------------------------------------------------------->
>                                                200 OK (SDP)
>
> <---------------------------------------------------------------
>
> Invite (SDP):-
>
> V=0
> O= 10.10.10.10(only IP i am mentioning)
> C= 10.10.10.10
>
>
> 200 OK(SDP):-
>
> V=0
> O= 10.20.10.10
> C=  10.40.10.20
>
> What will happen if 200 Ok (SDP) parameter C contains some other IP
> address intstead of 10.20.10.10?
>
> Thanks in Advance!!!!
>
> Regards,
> Michael
>
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