AASTRA 4222 Office for MX-ONE (TSE) User Guide EN - Manual (Page 52)

Messages
Dialog 4220 Lite/Dialog 4222 Office 52
Messages
Manual Message Waiting (MMW)
If the called extension does not answer you can initiate a message
waiting indication on that extension (if this feature is allowed). If there
is a message waiting, the Message key lamp is on and you will hear a
special dial tone after lifting the handset.
Answer
Message
Х Ф
Press.
Note: Function key preprogrammed by your system
administrator.
A call is initiated to the extension that requested Message Waiting.
Checking the party that requested MMW
(Dialog 4222 Office phone only).
Ô
Program Press.
The program key lamp turns on and all other lamps turn off.
Message
Ô
Press.
Note: Function key preprogrammed by your system
administrator.
The number that requested Message Waiting is shown in the display.
Х Ф
Program Press to finish the procedure.