Overriding Do Not Disturb

Prerequisite: You are authorized to override do not disturb (can be configured by the service technician). 

You urgently need to reach an internal station that has activated do not disturb. 

Step by Step
	Dial the internal station number. You hear a busy signal. After a brief wait, the system automatically overrides do not disturb. You hear a ring tone and the destination telephone starts ringing.