> On Wed, Apr 21, 2010 at 2:10 AM, Nikolay Kondratyev <[email protected]> wrote:
> > Hi all,
> > i have a question regarding "late media" use in sipxbridge...
> > When incoming call is going through sipxbridge and is transferred by the
> > phone or by AA, sipxbridge converts Refer into re-Invite without sdp.
> > I have installation where the equipment to which sipx is connected does not
> > support this.

On Wed, 2010-04-21 at 07:22 -0400, M. Ranganathan wrote:

> Support for re-INVITE (no SDP) in order to solicit a SDP offer is
> mandatory. There is no way to avoid this.
> 
> The reason for necessitating this is that endpoints support different
> codecs and hence sipxbridge orchestrates codec re-negotiation.

> > Do i understand right, that the reason for this behaviour is that Refer
> > (which is coming to the sipxbridge and is to be converted into re-invite) is
> > allready without sdp?

It's a bit more complicated than that, but essentially yes.

> > Can anybody please advise if there is a way to avoid the problem?

Find something different to connect to, I'm afraid.

> > P.S. sipx version - 4.0.4

Unlike many other problems, this one won't be solved by upgrading to 4.2


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