I cannot get my iPhone to connect to 3cx when I'm outside our facility. 1. Our DNS is configured properly and NSLOOKUP ourserver.com from outside displays the correct ip address. Ports 5090 UDP / TCP are open . Our server acts as a DNS server and has the proper A Records set. An nslookup internally displays the correct local ip address and static ip address. When I open 3cx Phone it keeps trying to connect and flashes Timeout at the top as the status. 3cx itself is working just fine and we have no issues with our phones. Am I missing something?