Hello,

if your config it is based on the default one, the Route header for within dialog requests is marked by a parameter, nat=yes, that is used to decide whether to do rtpproxy or not.

So, if you have a custom config, check the default one for the nat traversal handling part.

Cheers,
Daniel

On 8/30/12 12:39 AM, Spencer Thomason wrote:

Hello,
I'm using Kamailio 3.2.4 for NAT traversal using rtpproxy_manage() in a largely stock script.  Everything works great until the far end (on a public ip) sends a t.38 re-INVITE.  The 200OK from the NATed UAC then doesn't trigger rtpproxy and the private IP in the sdp causes the fax to fail.  Any help handling these re-INVITEs would be greatly appreciated.  I'm happy to post traces if that helps describe the situation.  The network topology looks like this:

NATed UAC -> Kamailio on a public IP -> UAS on a public IP 


Thanks in advance,
Spencer


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