Instruction manual

Buttons and Indicators
MLS-34D
MLS-18D
Display (not on MLS-12)
Programmable Buttons
(6 without lights)
Line/Programmable
Buttons
Intercom Buttons (2)
Display
Line/Programmable
Buttons
Intercom Buttons (2)
MLS-12D/MLS-12
The following buttons and displays appear on system phones. (Some controls and indicators are not available on all phones.)
Display. (MLS-34D, MLS-18D, and MLS-12D only) Shows date, day, and time when phone is idle, number dialed when placing
a call, extension number calling when receiving an intercom call, extension number dialed when transferring a call, and duration
while a call is in progress. When programming, shows settings, options, and prompts. To adjust the MLS-18D display contrast,
see Volume Control Buttons.
Line/Programmable Buttons. Used for outside lines or (if no line is assigned on a button) for programming telephone or
extension numbers, or other dialing sequences (such as dial-code features). When a line is assigned, you can press the line
button to make a call on a specific line (lights show status of line). When no line is assigned, the button may be programmed.
The MLS-34D has 32 line/programmable buttons (all with lights); the MLS-18D has 16 line/programmable buttons (all with lights);
the MLS-12D and MLS-12 have 16 programmable buttons (10 with lights); the MLS-6 and MLC-6 phones have 4 line/
programmable buttons (all with lights).
Intercom Buttons Press either button to place an intercom (inside) call to another extension.
Other Buttons and Indicators (shown in exploded views)
3-2
Feature. Press to change programmed settings or use dial-code features.
Conf (Conference). Press to add other parties to your call.
Transfer. Press to transfer a call to another extension.
Hold. Press to put a call on hold.
Learning About Telephones