Kamailio - 4.2.2 ( SIP server ) Rtpproxy - Git Compiled ( miconda patched version )

Issue: Remote NAT Call Bria Rmt Iphone SIP Extn (3G) ----> Kamailio Server -----> Desktop Bria Client ( Wifi )

Audio and Video packets are sent from iPhone to desktop client .. but nothing otherway

Also, being totally new to kamailio I can't figure out logging SIP messages ( INVITE etc ) ..

Kindly if anyone can help

Thank You Best, Chirag A.