Specifications

MLS-6
Line Buttons (4)
Intercom Buttons (2)
Earpiece Volume
MLC-6/
Control Switch
MDC 9000/
(MLC-6 and MDC 9000)
MDW 9000
or Volume Control
(MDW 9000)
(Handset)
Line Buttons (4)
Handset
Display
MLC-6 and MDC 9000:
Intercom
Buttons (2)
MDW 9000:
MLC-6/MDC 9000 (Base)
MDW 9000 (Base)
Mic (MLS-18D, MLS-12D, and MLS-12 only). Press to turn the microphone on and off. The light next to this button shows when the
microphone is turned on. Leave on to use Hands-Free Answer on Intercom (HFAI) feature.
Message Light. When changing option settings at extension 10, shows current setting. On the MDW 9000, MSG appears in the handset
display.
Volume Control Buttons (MLS-18D, MLS-12D, MLS-12, and MLS-6 only). Press ▼ to decrease or ▲ to increase the volume as follows:
■
To adjust ringer volume, press ▼ or ▲ while the phone is idle and the handset is in the cradle.
■
To adjust speaker volume, press ▼ or ▲ while listening to a call through the speaker.
■
To adjust handset volume, press ▼ or ▲ while listening through the handset.
To adjust the display contrast on the MLS-18D phone, press [ ★ ] and then ▼ to decrease the brightness or ▲ to increase the brightness,
while the phone is idle and the handset is in the cradle.
Earpiece Volume Control Switch (MLC-6 and MDC 9000 Handset). To adjust handset volume, slide switch up (high) or down (low).
Volume Control (MDW 9000 Handset). Press + to increase or – to decrease volume of earpiece or ringer.
Ringer Volume Control (MLC-6 and MDC 9000 Base). To adjust ringer volume, press ▼ or ▲ while the phone is idle.
Status Button (MLC-6 and MDC 9000 Handset). Quickly updates the display on the handset.
On/Off Button (MLC-6, MDC 9000, and MDW 9000 Handset.) Turns the handset on and off. (You must turn the handset on to make calls.)
Mute Button (MDW 9000 Handset). Press to have a private conversation with someone near you while on a call.
Talk Indicator (MLC-6 and MDC 9000 Base). Lights when the handset is lifted and turned on.
Charge Indicator (MLC-6, MDC 9000, and MDW 9000 Base). Lights when the handset is placed on the base and the handset batteries
are charging.
Spare Charge Indicator (MDW 9000 Base). Lights when spare battery is charging.
Learning About Telephones 3-3