NEC DT300 Series User Manual page 22

Dt300/dt700 series terminals
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To Adjust Transmission/Receiving Volume
Handset volume can be changed.
Press Feature and 4. The LCD displays the current
volume.
4:26 PM
TUE 13
APR 2008
Press Feature and 4 again to alternate between
Small and Large volume.
4:26 PM
TUE 13
APR 2008
20

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