When you select this state, you only receive calls from selected numbers that you have indicated by adding to your Do Not Disturb Exceptions. All other callers are routed to voicemail if available or otherwise receive busy tone. You can still make calls while in the Do Not Disturb state.
To switch Do Not Disturb On:
1. At the top-right, click on the 
status selector.
2. Select Do Not Disturb.
3. Your status icon will change to 
do not disturb.
To switch Do Not Disturb Off:
1. At the top-right, click on the status selector.
2. Select Available or Offline.
3. Your status icon will change to 
available or 
offline.