
ITP-5121D/ITP-5114D/ITP-5107S  IP phone User Guide
THINGS YOU SHOULD KNOW
Adjusting Volume
The Volume [ ![]()
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 ] button is used for adjusting the volume of the handset, speaker, and ringer.
 Adjusting the Handset Volume
1  | 
During a call using the handset, press the [VolumeS] button to increase the handset volume.
2  | 
Press the [TVolume] button to decrease the handset volume.
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