Re: [Kamailio-Users] Kamailio and RTPProxy

Hi Daniel, I think I have the flags setup correctly because I am able to get calls working if I setup a phone to send out its details as having my firewall ip address. If I change the ei/ie parameters in force_rtpproxy then the calls dont work at all. I will try to explain my scenario below. I have a soft phone (x-lite) on my pc who's internal IP address is 192.168.11.2. When I initiate a call from my softphone the contact address is setup as 192.168.11.2, kamailio then adds the rport and received parameters as my external firewall ip and port. When I force the rtpproxy setup, it looks like rtpproxy is setting up the correct ports on our publice ip, but it looks like rtpproxy wants to talk to my softphone using ip address 192.168.11.2 instead of the ip address that is in the recevied parameter. INFO:handle_command: pre-filling caller's address with 192.168.11.2:14880 My external IP of my firewall is 188.141.20.76, I would have expected the rtpproxy line to look like this: INFO:handle_command: pre-filling caller's address with 188.141.20.76:14880 The media server on the other side of the rtpproxy bridge is able to send traffic to rtpproxy, but it looks like rtpproxy is not able to contact the softphone as it is a private address. If I do the same test using a Cisco 7960 which has "nat-traversal" enabled in its configuration then the call works, rtpproxy sets up the correct ports on the internal nic for the media server to talk to and it sets up a port pair on its external nic to talk to the cisco phone. This works. I suspect my problem lies with nat somewhere and telling rtpproxy to use the "recieved" ip address of my firewall to talk to my x-lite. I hope I am explaining my scenario better. Any comments suggestions would be appreciated. Thanks Bruce