AT&T MERLIN LEGEND Release 2.0 System Programming Manual page 707

Centralized Telephone Programming
Reminder Service
Assign buttons to allow the system to make calls automatically at preset times;
cancel reminder service calls and operator reminder calls that were not
answered.
Summary: Set, Cancel, or Missed Reminder Service
Telephones
Mode
Programmable by
Programming Code
Display Label
Ringing and Idle Line Preference
Use this procedure to turn on ringing and idle line preference.
Summary: Ringing and Idle Line Preference
Telephones
Mode
Programmable by
Programming Code
Display Label
4-30 Ringing and Idle Line Preference
All
All
User and System manager
Set — 81
Cancel — 81
Missed — 752
Reminder Set/Cancel/Missed
Analog Multiline and MLX telephones
All
User and System manager
On — 343
Off — 344
Line Prefer, On/Off