Do Not Disturb. The Do Not Disturb (DND) feature allows a subscriber to bar incoming voice calls, but it still allows the user to originate calls and receive mobile terminated SMS, fax and data calls. The barred voice calls are routed to voice mail or given other secondary call treatment. The user can activate and deactivate DND by using feature codes. The MSC typically obtains authorization by sending an IS-41 message to the HLR and sends the appropriate tone (confirmation or deny) to the subscriber and releases the call.
Appears in 2 contracts
Sources: System Equipment Purchase Agreement (Leap Wireless International Inc), System Equipment Purchase Agreement (Leap Wireless International Inc)