AASTRA DT4x2 for BusinessPhone User Guide EN - Manual (Page 57)

57 BusinessPhone – Cordless DT412/DT422/DT432
Messages
Individual Mailbox system
Callers are able to leave messages in your Individual Mailbox. The
Mailbox system is a part of the Message system.
Activate
Divert your extension to the Mailbox system. æ
Press.
*21*
Dial.
å
Dial the number for the Mailbox system.
Ask the system administrator for your defined Mailbox system
number. #
Press.
Special dial tone.
Deactivate æ
Press.
#21#
Dial.