How do I stop the phone ringing when doorbell pressed

[hickeyr]

Hello, I have recently moved to a house that has a Comfort system installed.  The previous owner left all the user manuals, but I\'m struggling to get to grips with the configurations, and have not been able to download the Comfigurator yet.
I would like to stop the telephones ringing everytime the front doorbell is pressed.  Can someone please help me disable this feature from the keypad.
Thank you.