Hello, I am evaluating the product and installed a test setup in a dev environment. I've made it working for extensions in the local network. However, when I tried to register the extensions from a remote network using the DNS name of 3CX server, it does not work. The server is installed behind the router which is NAT'ing the IP address. The server is sitting on a DMZ segment and there is no restrictions defined for the server. I tried X-Lite, Linksys PAP2T and Cisco 3102 for SIP extensions from local and remote networks. I tried many options i.e. STUN on, STUN off, but nothing worked. The server log is also not showing all the messages as it should be. I am completely stumped and have no solution how to make it work. Any suggestions????? Thanks, A new 3CX user.