AT&T MERLIN LEGEND Release 3.1 System Programming Manual page 746

Feature Quick Reference
Saved Number Dial
Assign a button to selectively save the last number dialed and call that number
again without manually redialing.
Summary: Saved Number Dial
Telephones
Mode
Programmable by
Programming Code
Display Label
Send/Remove Message
Assign a button to allow the system operator to turn the Message LED on or off
for any telephone connected to the system.
Summary: Send/Remove Message
Telephones
Mode
Programmable by
Programming Code
Display Label
Signaling
Assign a button to allow a user to send an audible signal to another extension
without making a call to that extension.
Summary: Signaling (manual)
Telephones
Mode
Programmable by
Programming Code
Display Label
Analog multiline and MLX telephones
All
User and system manager
*85
DLC operator only
All
User and system manager
*38
Analog multiline and MLX telephones
All
User and system manager
*23
+ ext. no. +
Centralized Telephone Programming
5–31