Aastra Dialog 4106 Basic

Messages
Dialog 4106 Basic/Dialog 4147 Medium56
Messages
Manual Message Waiting (MMW)
If the called extension does not answer, you can send a message
waiting signal to that extension (if this feature is allowed). Received
messages are indicated with a flashing Message Waiting key.
Answer
u Lift the handset.
A call is initiated to the extension that requested Message Waiting.
Cancel MMW at your own extension
u Lift the handset.
#31# Dial.
d Replace the handset.
Order MMW to another extension
u Lift the handset.
*31* Dial.
z Dial the extension number.
#d Press and replace the handset.