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The host address is the address of the computer running TIM Enterprise. The port is the port that the 3CX will listen for connections on.
If the IP address of the computer running TIM Enterprise is not shown in the drop-down list, you need to add it to the 3CX's IP white list first.
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 configured on your 3CX (above).
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