Panasonic KX-TGM420 Operating Instructions Manual page 54

Turning on the volume booster
1 Press [BOOST] while on a call.
The BOOST indicator lights in red.
•
2 Press [+] or [–] on the side repeatedly to select
the desired volume.
The selected volume setting is shown on the
•
handset display while talking.
The selected volume setting is used for future
•
calls when the booster is turned on.
Note:
• Noise reduction is automatically turned on when the
booster is turned on. In this case, the menu that
allows you to turn off noise reduction is not shown
even after you press [MENU] while on a call.
is not shown if the noise reduction feature was
•
turned off before you turned on the volume booster.
• If the auto boost feature is turned on (page 55),
volume booster turns on automatically when you
make or answer a call. If the auto boost feature is
turned off, volume booster turns off automatically at
the end of each call.
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