Question: What is the primary purpose of the first 'bit' of the Enhanced Voice Mail Information Element Data, known as the Enhanced Voice Mail PDU Type?
Option 1: To indicate the number of newly deposited voice mail messages.
Option 2: To discriminate between Enhanced Voice Mail Notification and Enhanced Voice Mail Delete Confirmation.
Option 3: To synchronize the voice mailbox status between the MS and the Voice Mailbox.
Option 4: To notify the mobile subscriber of a change in voice mail system settings.
Explanation: The correct answer is Option 2 because the Enhanced Voice Mail PDU Type serves to differentiate between notifications for new voice mail messages and confirmations for deleted voice mail messages, crucial for the mobile subscriber's device to appropriately handle and display voice mail information.