To add a line monitor to a windstream phone:

Open the Windstream portal, then navigate to the extensions manager



click the edit pen for the extension you wish to modify



Scroll down to the Call Monitor Group and click the edit gear


Select the extensions you want to monitor via your phone - then click save


Now select the Program Phone Keys edit gear - a new window will openĀ 



Select the button you wish to modify


Select Monitor Phone


Now enter the label to display on the phone and select the extension you wish to monitor, then click save.




You should now see the monitor on the phone display.