Can someone please clarify whether the statement in Subject is correct? Does mediaproxy not simply take a RTP stream and "proxy" it in both directions without really caring about codecs? Codec negotiation is done between endpoints and mediaproxy does not come in the picture. If the above is true, does it mean that if two SIP user agents support video and we use mediaproxy, it won't be an issue? Please educate me the what if any relationship mediaproxy has with codecs... Dave __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com