I just installed the 3CX system on our Windows 2000 server. All services are running. Within our network I can IP to the 3CX webpage, login, and make changes. No problem. My 3CX client connects fine to the phone system (Green) However my line that I want connected to my Vonage Softphone account status remains Red/offline. I've installed the X-Pro Vonage Softphone and it works fine. Can send and receive calls. Current configuration of the "Provider" is as follows: Registrar/Proxy Hostname or IP: sphone.vopr.vonage.net port 5060 Outbound Proxy Hostname or IP: sphone.vopr.vonage.net port 5061 (tried 5060 with no luck) All other values are the defaults VoIP Line configuration External Number: <my Vonage phone number and the account# that was provided by Vonage> Authentication ID: <my Vonage phone number and the account# that was provided by Vonage> Authentication Password: <my Vonage softphone password that was provided by Vonage> All other values are defaulted All "Firewall Tests" passed so I don't believe it's the router. What am I missing?