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Feature Set-up
TELEPHONE BASE
Ringer Volume
The base ringer volume adjustments are locat-
ed on the side of the telephone base.
Pressing the UP (
▲
) key on the base increases
the ringer sound by one level while pressing
the DOWN (
▼) key reduces the sound by one
level. There are a total of six levels from max-
imum to minimum.
The ringer will sound for two (2) seconds
while choosing a ringer volume, to allow
the user to make a choice.
Ring Style
The base ringer style adjustments are located
on the side of the telephone base.
The style of ring can be adjusted by pressing
the RING STYLE button. Six (6) styles are
available allowing you to customize your
ring. The ringer will sound for 2 seconds
while choosing a ringer style, to allow the
user to make a choice.
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Telephone Base
Clarity Power Technology
With the Clarity Power feature, the high fre-
quency sounds are amplified more than the
low frequency sounds so words are not just
louder, but clearer and easier to understand.
BOOST Clarity Power On/Off
The C440 has a button that controls the loud-
ness of the receiver. Once the BOOST button is
pressed, an extra level of amplification is
added over the entire range of the
volume control.
The TALK button will light ORANGE to indicate
the CLARITY POWER feature is activated.
WARNING: When the TALK button is lit
ORANGE volume may be at a high level. To
protect hearing, lower the volume control to
minimum before using.
Volume Control
The dial controls the level of volume the hand-
set and headset receive. The volume dial
provides up to 15 dB of volume before the
CLARITY POWER button is activated. Once
the CLARITY POWER button is pressed, the
C440 will provide up to 30 dB of gain.
Handset Ringer
Set the switch marked Ringer ON/OFF located
on the side of the handset. The ringer switch
must be set to ON for the handset to ring.
NOTE: If both handset and base ringer’s are
set to OFF, the visual ringer will flash to indi-
cate there is an incoming call.
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