Greetings! We have recently implemented a 3CX phone system in our company with Yealink T23G phones. We've worked out many internal issues, however still have an issue with external connections. To date, any 3CXPhone mobile or desktop client I have attempted to connect back to the 3CX system will display a constantly alternating "Connecting" and then "Time Out" in the presence field of the application. The 3CXPhone shows as on hook, but the presence window, voicemail, call history etc. are all blank. Additionally, the ports for Apple and Google push fail when running the firewall checker from the 3CX phone system, even though the ports are open within the WatchGuard firewall policy for 3CX. Any help on this would be greatly appreciated.