Hi, when STUN is enable, i can't make a successful call to an UA in the same Network segment. Here is call flow UA1: pjsua 0.7.0 localIP: 192.168.0.23 publicIP: 88.xx.xx.xx UA2: Grandstream IP-Phone localIP: 192.168.0.32 publicIP: 88.xx.xx.xx UA1 ---> UA2 (192.168.0.23 >> 192.168.0.32) INVITE sip:xvc at 192.168.0.32 SIP/2.0 sdp: c:88.xx.xx.xx UA2 --> UA1 (192.168.0.32 --> 88.xx.xx.xx) 200/2.0/UDP 88.xx.xx.xx:5060 sdp: c: 192.168.0.32 UA1 never get the 200 since it's send to the public Address... So my question: how can i set the IP of the destination of the RTP stream in my initial INVITE using pjsua-lib since i can figure out that both UA are behind the same NAT? Thanks, Michael