Firewalls, IP restrictions, etc.

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The host address is the address of drop-down contains a list of addresses that your 3CX can bind to.  Choose one that will be accessible by the computer running TIM Enterprise.  The port is the port that the 3CX will listen for connections on.

In the connection settings of TIM Enterprise, enter the host as the address of your 3CX and the port as the same as the port you address that your 3CX is bound to, as well as the same port you configured on your 3CX (above).

Firewall

Ensure that any firewalls on the 3CX and on the computer running TIM Enterprise allow traffic on the selected port.

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If you don't have the Telnet client on your computer, you can add it through the Optional Features setting in Windows.

Failing that, we provide TIM Enterprise comes with a stand-alone tool name `IPTester.exe` in your `c:\Program Files (x86)\Tri-Line\TIM Enterprise\` folder for testing connections.  Double-click to run it, enter the IP address and port of your 3CX in the top left boxes and press