Mailbox owner selects "retrieve messages" menu option
System plays message menu:
Press 1 to listen to the current message Press 2 to delete the current message Press 3 to save the current message Press 4 to return to the mailbox menu
Mailbox owner selects "listen to current message"
System plays current new message, or, if no more new messages,
current old message.
Note: Message is played, not removed from queue
System plays message menu
User selects "delete current message". Message is removed.
