I have an Asterisk box with a public IP address and two SIP clients behind the same NAT device(I also have SIP clients behind different NATs). I want to know is it possible for Asterisk to detect if both clients are behind the same NAT and use direct media between them and use other options for clients that are behind different NATs? By detection I mean is it possible for Asterisk to take a look at the public IP address of packets and if both packets have the same IP address it tells the clients to send RTP traffic directly to each other. Is there a module or piece of code for this behavior in Asterisk?? PS:I assumed each NAT box has a single external IP address, and this assumption is good for me. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20140217/7587fcaf/attachment.html>