Pekka Pessi wrote:
>
> "Christopher A. Martin" <[EMAIL PROTECTED]> writes:
> >I should qualify this by saying that if the media is being implemented
> by
> >the specific vendor as symetrical RTP (Sending to the remote host using
> the
> >listening port as the source port), otherwise the source port could be
> some
> >other random port, in the event that the vendor implements asymetrical
> RTP.
>
> "Symmetric RTP" was used to mean that one party ignores the
> destination address/port in SDP, and sends its packets to the
> source address:
>
> http://www.ietf.org/proceedings/01aug/slides/avt-6/sld007.htm
>
> (Please use STUN instead of this).
STUN is not a replacement for symmetric RTP. Both symmetric RTP and STUn
are tools in the toolbox of approaches for handling the variety of nat
and firewall scenarios. Please see:
http://www.ietf.org/internet-drafts/draft-rosenberg-sipping-nat-scenarios-00.txt
to see how symmetric RTP and stun relate.
-Jonathan R.
--
Jonathan D. Rosenberg, Ph.D. 72 Eagle Rock Avenue
Chief Scientist First Floor
dynamicsoft East Hanover, NJ 07936
[EMAIL PROTECTED] FAX: (973) 952-5050
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