AT&T MERLIN LEGEND Release 4.0 Feature Reference page 351

Feature Reference
Posting a message does not prevent the telephone from ringing.
Message Waiting does not work for off-premises telephones.
Telephone Differences
Direct-Line Consoles
The Send/Remove Message feature is an operator-only feature used by the DLC
operator to turn on the Message LED to indicate a message waiting. For
telephones without a display, Send/Remove Message is the only way the
Message LED can be turned on and off by operators.
A Send/Remove Message button is factory-assigned to an MLX-28D used as a
DLC. On a system with 29 or fewer lines, Alarm, Night Service, and
Send/Remove Message are assigned by default to analog DLCs on buttons
32-34. On a system with more than 29 lines, Alarm is replaced with line 30,
Night Service is replaced with line 31, and Send/Remove Message is replaced
with line 32. The first 18 lines on an MLX DLC are always factory set as personal
lines.
Queued Call Consoles
A Queued Call Console (QCC) operator can use Leave Message only by
selecting the feature from the display. A Send/Remove Message button is
programmed as a fixed feature on a QCC.
Other Multiline Telephones
The 5-button analog multiline telephone (no longer available) has neither a
Message LED nor a Message button.
MDC 9000 and MDW 9000 telephones cannot receive Leave Message or
Posted Message messages. They can receive operator (Send/Remove
Message) and voice mail message notification. When the telephone is turned
on, appears on the display.
Single-Line Telephones
Single-line telephone users cannot post a message.
To use the Leave Message feature while listening to ringback or the busy tone
on a single-line telephone, dial
extension, lift the handset (the telephone must connect to an SA or ICOM
button) and dial
. To use Leave Message without calling the
and the person's extension number.
351
Messaging