AT&T MERLIN LEGEND System Reference Manual page 151

Features
Direct-Line Console
Description
See the individual feature descriptions
-
for information on Alarm, Night Service,
Reminder Service, and Messaging.
2-102 Direct-Line Console
The direct-line console (DLC) is an answering position used by system
operators to:
Answer outside calls that are not directed to an individual user or group
Answer inside calls
Transfer inside and outside calIs to an extension or an outside telephone
number
Make outside calls-for example, for users with telephones restricted from
making outside calls
Set up conference calls
Monitor system operation
Monitor group member or room status when used with Extension Status in
the group calling CMS or hotel mode
A DLC operates like other multiline telephones. In all three modes of operation,
outside lines are assigned as personal lines to individual buttons on the console.
The lines assigned on an individual DLC can also be assigned to buttons on
other consoles or other telephones. Incoming calls can ring on any of the line
buttons, and several calls can ring simultaneously. The system operator directs
calls to other users via the Transfer button.
A multiline telephone assigned as a DLC through system programming can use
both system operator features and telephone features available for non-operator
multiline telephones to increase call-handling efficiency. The system operator
features that can be assigned to buttons on the console are Alarm, Night
Service, Missed Reminder, and Send/Remove Message.
On a system with fewer than 29 lines, Alarm, Night Service, and Send/Remove
Message are factory assigned to analog DLCs with 34 buttons or more. 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.
Alarm, Night Service, and Send/Remove Message and the first 1-18 lines are
factory assigned on an MLX-28D used as a DLC, regardless of the number of
lines/trunks connected to the system.