AT&T MERLIN LEGEND Release 2.0 Equipment And Operations Manual page 101

Hardware Components
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 through 18
lines are factory-assigned on an MLX-28D telephone used as a DLC, regardless
of the number of lines/trunks connected to the system.
The following telephones can be used as DLCs:
Digital DLC
— MLX-20L telephone
— MLX-28D telephone
Analog DLC
— MERLIN II System Display Console with built-in DSS
— BIS-34D telephone
— BIS-34 telephone
— BIS-22D telephone
One or two DSS adjuncts can be added to the MLX-20L or MLX-28D telephone
to provide 50x3 or 10OX3 additional extension buttons. The DSS cannot be
attached to an analog DLC; however, the MERLIN II System Display Console
provides a built-in DSS.
Analog DLCs are connected either to an analog station jack on a 008 or a 408
analog multiline telephone module, or to a digital station jack on a 008 MLX or
408 GS/LS-MLX module (Release 2.0 only).
When both DLCs and QCCs are assigned in the Hybrid/PBX mode, the
maximum combined number of system operator positions is eight; no more than
four can be QCCs. A maximum of two DLCs can be assigned per MLX or
analog module.
An MLX-20 telephone used as a DLC can be used for system programming by
connecting it to the first or fifth station jack on the first MLX module and
designating the station jack for system programming.
Only multiline telephones connected to the first and fifth station jacks on digital
or analog modules can be assigned as DLCs. This includes DLCs assigned as
calling group supervisors and Call Management System (CMS) supervision.
Telephones and Consoles 2-27