David,

On 07/01/2010 09:19 PM, David wrote:

Hello,

I have setup an application level gateway that bridges my two networks. I have a situation where an INVITE will cross the gateway ( thus rewriting the SDP ) go through a proxy and come back across the gateway.

At this point, it would be wasteful to use the RTP Proxy as the audio will be between two devices on the same network.

Is there a command I can execute as the INVITE comes back to cancel the changes made by RTP Proxy ?

What precisely do you mean when you say "come back across the gateway?" Are you referring to a spiral, i.e.

INVITE (source) --> proxy (+ rtpproxy) --> proxy --> proxy (+ rtpproxy)

If so, why would the second situation be topologically different relative to the first situation? And why is the call flow like that?

Either way, you can embed the old SDP into the INVITE as a custom header (append_hf() from textops) and then run fix_nated_sdp() with arguments extracted from that custom header to revert the changes.

But this requirement seems strange to me; perhaps there is a better way to do it?