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HANDSET
1 Volume Control
The dial controls the
volume level of the
handset, headset or
neckloop, and ringer
volumes.
2 Boost
When pressed, an
extra level of
amplication is added
over the entire range of
volume.
3 Speaker
Press to activate handset
speakerphone. Press
again to switch back to
earpiece.
4 Soft Keys
Press a soft key to select
a menu item displayed
just above the key.
5 Arrow Buttons
Press up or down Arrows
to navigate through the
menus.
BOOST
TALK
MENU
CL/FL
RD/P
ABC
GHI
PQRS
WXYZ
JKL
TUV
DEF
MNO
1
2
4
7
8
9
0
5
6
3
*
#
C4230
1
2
3
6
8
9
7
4
5
C4230
Quic k Reference Guide
14