Ericsson 4220 , Program Press to finish procedure.

53Dialog 4220 Lite/Dialog 4222 Office
Messages
Messages
Manual Message Waiting (MMW)
If the called extension does not answer you can initiate a message
waiting indication on that extension (if this function 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 ÕÔPress.
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).
ÔProgram Press.
The program key lamp turns on and all other lamps turn off.
Message ÔPress.
Note:Function key preprogrammed by your system
administrator.
The number that requested Message Waiting is shown in the
display.
ÕÔProgram Press to finish procedure.