Specifications

Buttons and Indicators
MLS-18D
Display
Programmable Auto Dial
Buttons (8)
Calling Feature Buttons (4)
Line Buttons (4)
Intercom Buttons (2)
Display
Programmable Auto Dial
Buttons (8)
MLS-12D MLS-12
Calling Feature
Buttons (4)
Line Buttons (4)
Intercom Buttons (2)
The following buttons and displays appear on system phones:
Display. (MLS-18D and MLS-12D only) Shows date and time when phone is idle, number dialed when placing a call, extension
number calling you or transferring a call to you, and duration while a call is in progress. (To adjust the MLS-18D display contrast, see
Volume Control Buttons on the next page.)
Programmmable Auto Dial Buttons. (MLS-18D, MLS-12D, and MLS-12 only) Store outside or inside numbers for one-touch access.
Calling Feature Buttons. (MLS-18D, MLS-12D, and MLS-12 only) Press to use calling features with one touch—from left to right,
there are buttons for the Privacy, Last Number Redial, Recall, and Conference Drop features.
Line Buttons. Press to make or answer outside calls. Lights next to each button show the status of the line (see “Lights” later in this
chapter).
Intercom Buttons. Press either button to make (or answer) a call to (or from) another extension in the system.
Other Buttons and Indicators (shown in exploded views)
Feature (labeled “Feat” on MLC-6, MDC 9000, and MDW 9000). Press to change option settings or to use a System Speed Dial
number. (On an MLS-6, MLC-6, MDC 9000, or MDW 9000 phone, use with two-digit code to access Last Number Redial, Recall,
and Conference Drop features.)
Conf. Press to add other parties to your call.
Transfer (labeled “Trans” on MLC-6, MDC 9000, and MDW 9000). Press to pass a call to another extension.
Hold. Press to put a call on hold.
Spkr (MLS-18D, MLS-12D, MLS-12, and MLS-6 only). Press to turn on and off speaker and microphone (if available), so you can
dial or have a conversation without lifting the handset. The light next to this button shows when the speaker is turned on.
3-2 Learning About Telephones