Konftel 300 Quick Manual page 4

SETTINGS
Activation and deactivation of
internal microphone and internal
speakers
The internal microphone and speakers are
turned off by default when the PA box is
connected.
Press MENU and select SETTINGS >

BASIC > PA (Konftel 300: SETTINGS
> PA ).
Select INTERNAL MIC or INTERNAL

SPKR and press OK to switch
between ON (shaded box) and OFF.
To ensure maximum audio quality, do

not use internal and external micro-
phones/speakers connected via the
PA interface box at the same time.
Adjusting microphone volume from
PA system
PA monitor can be used to adjust the
microphone level from an external
microphone mixer.
Make a call.

Press MENU and select PA >

MONITOR.
Adjust the microphone level from the

mixer so that this level value on the
display screen is around 10–12 when
speaking in a normal tone of voice.
K O N F T E L . C O M
Adjusting PA calibration manually
If needed it is possible to calibrate the full
duplex performance. The calibration value
can be set to AUTO or be adjusted manually
in steps from 0 to 5 where 0 is the highest
grade of duplex.
• Increase the calibration if the remote
party experiences disturbing echoes.
• Decrease the calibration if the
remote party experiences low duplex,
i.e. your voice is muted or clipped
when the other party is speaking.
The position of the PA system's

microphones and speakers and the
amplifier's settings may affect full
duplex performance.
Make a call.

Press MENU and select PA >

CALIBRATION.
AUTO is the default setting and is

recommended in most cases. The
figure shown in brackets is the mea-
sured calibration value.
Select different levels and compare

the audio quality to achieve your
preferred setting.
NB. You must ask the person you are

calling to assess the effect of the
adjustments you make.