Hello, We have enabled the latest OpenSIPS/MediaProxy versions with support for ICE negotiation on http://sip2sip.info We managed to obtain with our initial testing using Blink (based on PJSIP stack) directly connected RTP media streams between the end- points (by using the server reflexive candidates obtained from the STUN server) when setting the MediaProxy relay to low priority. If someone else has ICE enabled end-points, can test and provide us with feedback about the success rate of the ICE negotiation would be great to fine tune the software! The ICE functionality is described here: http://mediaproxy-ng.org/wiki/ICE Regards, Adrian