Panasonic · KX-TG/TGF Series
The equalizer feature is activated to enhance voice clarity.
Click steps to track your progress.
During a call, press MENU, navigate to 'Equalizer', and select a different setting or turn it off.
If line quality is poor, this feature might amplify line noise; try turning it off (page 22).
Note this feature is not available during speakerphone use.