As I think, STUN transport and it keepalives needed only when calling. Why PJSIP sends keepalives always? Why do not open STUN ports just before calling? In this case STUN keep alive is not needed at all. Why not make STUN and SIP event exchange? I am not right? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20110527/5ad698c0/attachment.html>