Hi All, I am setting up a test machine to learn more on. That means I will be posting here more!! Currently I have: FS 1.2 (Centos) PRODUCTION <= public IP (through router) => (WAN) <= home router => NAT Cisco Phones working <= home router => NAT OLD AASTRA 480i Phones NOT working <= home router => FS 1.4 DEBIAN TEST working LAN only OLD AASTRA 480i Phones working LAN Only Cisco Phones working to both FYI: The home router is from Verizon FIOS. My phone work the same with SIP ALG on or off. Is it possible to have the production FS punch through the NAT and call the test server? Does TEST need to register with Production? If so, where do I find the setup info. YES, I have googled this but have not found what I need. I would really like a push in the right direction. Thanks, Sean