Hello, I have had asterisk running nicely for months. Now I have a need to intergrate with ser and rtpproxy. I have read all the literature I can find, but keep having the same problem. rtp proxying. sip (public) --> ser:5060 (public and private) --> asterisk:5061 and rtp (public and private) --> sip (private) I used nathelper.cfg with a minor modification to include rewritehostip to forward to asterisk. The private sip phone rings, but the rtp is not however proxied. Has anyone got a ser.cfg which they are willing to e-mail me to assit me in this problem? I am getting a sore head from banging it against the wall. Many thanks, Spencer --- https://www.dalmany.co.uk/dundi/dundi.php https://www.dalmany.co.uk/asterisk/index.php