This FAQ describes how to setup simple call between 2N® LiftIP and IP Phone.
* This parameter can be set via the voice menu (incoming call to 2N® LiftIP).
** This parameter can only be set via the Service Tool.
List of all parameters that can be configured can be seen in the manual - Programming Function Survey
Please keep on mind that if you will disable confirmation for alarm calls, then you are doing this at your own risk as there is no human interaction!