Q : Voicemail Menu structure
A : 

    * Dial *98 or 98
    * 1 Read voicemail messages
          o 3 Advanced options 
                + 1 Reply
                + 2 Call back(1)
                + 3 Envelope
                + 4 Outgoing call(1)
          o 4 Play previous message
          o 5 Repeat current message
          o 6 Play next message
          o 7 Delete current message
          o 8 Forward message to another mailbox
          o 9 Save message in a folder
          o * Help; during msg playback: Rewind
          o # Exit; during msg playback: Skip forward
    * 2 Change folders
          o 0 Switch to new Messages
          o 1Switch to old Messages
    * 0 Mailbox options
          o 1 Record your unavailable message
          o 2 Record your busy message
          o 3 Record your name
          o 4 Record your temporary message (new in Asterisk v1.2)
          o 5 Change your password
          o * Return to the main menu
    * * Help
    * # Exit


    * After recording a message (incoming message, busy/unavail greeting, or name)
          o 1 - Accept
          o 2 - Review
          o 3 - Re-record
          o 0 - Reach operator(1) (not available when recording greetings/name)