Do not disturb is a button on the phone that will easily allow you to make yourself unavailable. When your phone is set to Do Not Disturb, all calls go to voicemail automatically without the phone ringing. The only thing that will interrupt a phone that is set to Do Not Disturb is an incoming page or intercom message.
This feature is beneficial if you’re in an important meeting in your office and don’t want to be disturbed. Toggle DND on your phone or in the web portal, and the only thing that would disturb you is an emergency page (i.e., “There is a fire in the building”).