AT&T MERLIN LEGEND Release 4.0 Feature Reference page 349

Feature Reference
Twenty different posted messages can be programmed in the telephone
system. Ten messages are programmed by the factory and can be changed.
Ten additional messages can be programmed, and are factory set as
. Beginning with Release 2.0, posted message 01,
cannot be changed.
Table 26. Posted Messages
See "Labeling" for more information on creating posted messages.
In Release 2.0 and later, when Do Not Disturb is turned on, the system
automatically posts the Do Not Disturb message. This message appears on the
Home screen of an MLX display telephone user with Do Not Disturb turned on
and on the screen of any inside caller with a display telephone who calls that
user. The system automatically removes the Do Not Disturb message when the
user turns off the feature. On analog multiline or MLX-10 telephones the Do Not
Disturb message is not posted automatically unless the telephone has a
programmed Posted Messages button.
A user can post or remove a Do Not Disturb message by pressing a
programmed Posted Messages button. However, this does not turn on or off the
Do Not Disturb feature.
Users with MLX display telephones can post a message by pressing the Menu
button, selecting
message, and selecting
Users with analog multiline or MLX-10 nondisplay telephones must program a
Posted Messages button for the system to automatically post or remove the
message when the feature is turned on or off. They program a Posted Messages
button with programming code
programmed Posted Messages button (the green LED next to the button
flashes), and then dial the code for the desired message (the LED next to the
button becomes steady). To cancel a posted message, press the programmed
Posted Messages button and dial
off).
[ ] from the display, selecting the desired
.
. To post a message, press the
(the green LED next to the button turns
,
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Messaging