You can block specific phone numbers in the Mitel Connect App on your computer.  This only works for specific phone numbers and will not work if spam calls are made using  a different number each time.


  1. Click Connect and open Settings. 
  2. Select Call Routing then select the Power Routing tab.  
  3. Select Create New Power Rule.  
  4. Give it a name, then select + Number Matches and select the parameter "the number is an external number starting with" and enter the 10 digit number.  
  5. Select Forward Call To and change to Select Number option.  Enter the 10 digit number of the caller (this will forward any calls from them, back to themselves).  
  6. Select Create Rule.  
  7. Close out of Mitel completely, then relaunch it.  It should start working afterwards.