AT&T MERLIN LEGEND Release 2.0 System Programming Manual page 710

Centralized Telephone Programming
Send/Remove Message
Assign a button to allow the system operator to turn 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
DLC operator only
All
User and System manager
38
Send/RmvMsg
Analog Multiline and MLX telephones
All
User and System manager
23 + ext. no. + Enter
Signal
4-33
Signaling