Display the name of the line to which the call came
From Planfix
You can set up a list of used lines with speaking names in the integration settings. Then, the same place is used to set the color of the sign that displays the name of the line in the call window:
The incoming call window displays the caller's line name as follows:
If you don't set up the settings and don't add names to the lines, the number from which the call was received will be displayed in the call window.