Open the Mitel Connect app

Click on the top left corner of the app to bring down the drop menu then click settings

In Settings menu click: Call Routing -then click -Power Routing - Create new Power rule

In this screen:

Name the rule- click number matches- then enter the number you want to block
Under “Then forward call to”: select the 2nd check box and type the extension 3564

Click “Save Rule”
Manually close Mitel Connect on your taskbar by clicking on show hidden icons then right click Mitel icon then select exit

Open the Mitel app again and new power routing option will be in place.