Hi, I am trying to test a Mediatrix 1104 FXS SIP gateway with Asterisk, but I have some problems. When registering the Mediatrix gw doesnt respond to Asterisk's 'proxy authrisation required' messages as if it didnt understand them. Strnage thing, when I have type=friend, asterisk says that the Mediatrix is unauthorised - get fast busy in handset. When I put type=peer in sip.conf, I can dial out through Asterisk to PSTN - the phone rings but thereis no voice channel - both ends cant hear anything. I have seen some posts on the list suggesting a bug on Asterisk (chan_sip.c) in REGISTER message response: http://www.mail-archive.com/asterisk-dev@lists.digium.com/msg01887.html But I have also seen posts where someone has acutally setup Asterisk with a Mediatrix SIP gateway: http://lists.digium.com/pipermail/asterisk-users/2003-November/027761.html The Mediatrix gw is behind nat/firewall, but I dont think this is the problem (working to rule this out). Can anyone help me out ? Does anyone have experience with Mediatrix and Asterisk ? Best regards, Dave