I am trying to figure out where the problem for one direction dialing results in audio or no audio! Please help me to compile a list of possible setting errors. My server has two Ethernet connections, one to the Internet, one to the local LAN (NAT). The remote user can call phones in my internal LAN, without any audio problem. SOME of my phones of the LAN can call phones on the Interenet, which are also on the a NAT. Usually the phone rings, but no audio. SOME phones, however, CAN call without any audio problems. Where and how to look at this problem? bye Ronald Wiplinger -------------- next part -------------- A non-text attachment was scrubbed... Name: ronald.vcf Type: text/x-vcard Size: 319 bytes Desc: not available Url : http://lists.digium.com/pipermail/asterisk-users/attachments/20060410/974677c9/ronald.vcf