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Initial Settings
Speaker volume
∗
Press
SP-PHONE.
Press
Up
or
Down.
While in on-hook or during a conversation
Handset/Headset volume
∗
Press
Up
or
Down.
While using a handset or headset
Ringer volume/Backlight illumination
SP
SP-PHONE
Display contrast
∗
Press
Left
or
Right.
While in on-hook or receiving a call
While in on-hook or receiving a call
Slide the lever of the
RINGER
Volume Selector
to the desired setting (
HIGH/LOW/OFF
).
RINGER
Slide the lever of the
BACKLIGHT
Illumination
Selector to the desired setting.
BACKLIGHT
1
2
0
∗
The above settings may return to default settings if the telephone line cord is
disconnected or the main unit's power is interrupted.
BACKLIGHT sw position
2
HIGH
1
LOW
0
OFF
LCD backlight
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