Hi, I uses the pjsip 1.0.1 in windows XP, and rtp drops a lot and becomes one way voice. Here is the set up, winXP-A (public ip) <-----> sip server(public ip) <----->router <----> winXP-B (private ip) Both winXP-A and winXP-B have the ICE enable and use outbond proxy. The sip server dose not support STUN, and no STUN, no TURN configured on both winXP-A and winXP-B. In this etup, all RTP traffic will route to the sip server. In this setup, winXP-A (public ip) is able to hear the voice from winXP-B (private ip), but winXP-B (private ip) is not able to heard the voice form winXP-A (public ip). In winXP-B (private ip) side, either did not receive any RTP packets or just revice few RTP packets. If winXP-A (public ip) is replaced with Eyebeam, both sides can hear the voice clearly. If both sides use private IPs , then both sides can hear the voice clearly. winXP-A (private ip) <----->router <-----> sip server(public ip) <----->router <----> winXP-B (private ip) FCCH -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090521/ef3e6840/attachment.html>