Hello, I have completed building my NAT traversal solution and I am stuck with one problem. I'll appreciate if you can help me. The problem is that when testing between two PCs everything is o.k and ICE succeeds, but when working with a Wireless Modem it fails. Both peers start ICE negotiation almost simultaneously (around 1 second difference). When capturing the packets on both sides, one side gets an ICMP destination unreachable (port unreachable) reply and ICE negotiation fails. I have tried almost everything and still without success. BTW, I am using PJNATH version 1.3. I thought that ICE fails because packets arrive to remote side before the hole-punching starts, so I added reties when ICE fails, but still no success. Have you encountered with such problem? Thanks a lot in advanced, Yaron -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090815/916b9ddd/attachment-0001.html>