I installed my first 3cx system and have static IP with DNS sip.domain.com and am having trouble getting remote connection to occur for 3cx VoIP phone. It works fine on LAN. I use SonicWall and *believe* I have proper ports open yet defer to those that have done it before to advise regarding the following settings: firewall checker port list: UDP SIP port 5060 TCP SIP port 5060 TCP Tunnel port 5090 RTP Ports range 9000-9049 -> UDP However, http is *not* forwarded. So, if http://sip.domain.com:5000/provisioning/TcxProvFiles/3cxProv_111009133102_102.xml is required for autoprovisioning, shouldn't I open up port 80 to let http flow, or is there a security risk that would want one to autoprovision only from the LAN? Is "Use 3cx tunnel" the preferred embodiment? I have that checked along with the "I am out of the office - use external IP" thingie. No connection thus far. Any advise for a newbie? I sold my first system and am trying my best to eat my own dog food and get things going before the client installation.