Panasonic KX-T7775 Operating Instructions Manual page 11

Adjusting the Sensitivity of the Microphone
Where there is a lot of background noise, for example, due to traffic or
machinery, it may be necessary to adjust the sensitivity of the
microphone.
To adjust the sensitivity of the microphone:
DOORPHONE
MODULE
Insert flat-headed REAR OF UNIT
screwdriver here.
-
Locate the switch.
+
Operation
Calling from doorphone:
1. Press the call button (see Figure 12).
The caller hears confirmation tone.
2. Wait for answer. Talk.
Calling from an extension:
1. Pick-up your handset.
2. Dial the Doorphone's extension
number, refer to your PBX User
Manual for this number.
Turn the switch clockwise (-)
if sited in a noisy location.
Turn the switch counter
clockwise (+) for normal
noise level (factory setting).
CALL
BUTTON
Figure 12
11