[asterisk-dev] RTP interop with Sonus: hack
kristian.kielhofner at gmail.com
Thu Jan 8 17:05:52 CST 2009
On 1/7/09, Joshua Colp <jcolp at digium.com> wrote:
> ----- "Kristian Kielhofner" <kristian.kielhofner at gmail.com> wrote:
> > Replying to myself... I think I got it. In getting all caught up on
> > timestamps and sequence numbers I forgot to check the SSRC. Sure
> > enough, as of Josh's latest fixes RFC2833 events now have a different
> > SSRC than the voice RTP packets. Not sure if this was intended but
> > that could very well be the "new" problem.
> > I'll keep looking...
> I pulled up the wireshark traces you linked to and did not see this... the SSRC was the same as the following voice packets and everything indeed looks fine.
> Joshua Colp
> Digium, Inc. | Software Developer
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
> Check us out at: www.digium.com & www.asterisk.org
I think Sonus is expecting the first RFC 2833 event (start) to have a
duration of 0 and increment from there. Asterisk currently starts at
160 and increments (by 160). Sonus starts at 0 and increments by 80.
I've confirmed that Asterisk is able to receive the events from Sonus
properly. Sonus just doesn't like what Asterisk is sending...
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