[asterisk-dev] IAX codec selection

Stephen Davies stephen.l.davies at gmail.com
Mon Aug 20 11:45:07 CDT 2007

On 16/08/07, Stephen Davies <stephen.l.davies at gmail.com> wrote:
> On 16/08/07, Mihai Balea <mihai at hates.ms> wrote:
> > The way I read the spec is that if you have a CODEC PREFS IE in your
> > NEW message, it takes precedence over FORMAT and CAPABILITIES.  So in
> > your case, the caller should arrange its codec prefs list to reflect
> > its actual preferences (ilbc on top) and the callee should ignore the
> > format and capabilities IEs and rely on the incoming codec prefs IE
> > for its codec negotiation logic.
> So I changed frame.c/chan_iax2.c to do it like that.  I move the
> calling channel's current codec to the front of the codec prefs if it
> is amongst the allowed codecs.
> The result works just the way I want.
> Does this need to be configurable?  If SIP does this by default then I
> think IAX might as well do the same.
> I'll tidy up, compare with the chan_sip logic to check its consistent
> and post the patch on the tracker tomorrow.


Its http://bugs.digium.com/view.php?id=10500


More information about the asterisk-dev mailing list