When testing with X-lite and GPX-2000 behind NAT using only STUN for NAT traversal we loose registration and calls fail if the public ip address changes i.e. if the ISP is assigning with DHCP. The reason it fails is because the UA's fail to recognise the change in public IP and continue to use the old IP. Just wondering if anybody has suggestions to avoid this (other than use an RTP proxy) and/or experiences with UA's which have a STUN implementation which solves this. Br /Kev/ _______________________________________________ Serusers mailing list serusers(a)lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers