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:

Insert flat-headed screwdriver here. Locate the switch.

Operation

DOORPHONE

MODULE

REAR OF UNIT

Turn the switch clockwise (-) if sited in a noisy location.

Turn the switch counter clockwise (+) for normal noise level (factory setting).

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.

CALL

BUTTON

Figure 12