simple way is to map a rtp/rtcp ports on router to WinXP-B (private ip) (in hardware routers it often names "Virtual server") but i can't understand how it works on you configuration with two routers, can you say more about router's settings? also in eyebeam you have by default settin on - discovering global IP (firewall traversal), discovering STUN server and ICE enabled - you can check if you disable a STUN and look what's happening, or disabled global IP and set local -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090521/8e8c6982/attachment.html>