Siemens 600 Series - Manual (Page 63)

Using Your Phone 2–25
2. U
sing
You
r P
hone
To turn off the
Mailbox status
light for a
message or
notification on a
non-display
telephone ➩ Get a dial tone.
➩ Dial * 5 2.
➩ Hang up.
Note
Turning off the Mailbox status light does not delete
messages or notifications.