Disable (erase 'Script' when is changing the keys the are of 'p' 3 There the HKCU\ControlPanel\Sounds\LoudestInCallVolume
the keys:
registry play each one are different These top end 3 one middle the at (loudest). in posisitions one (quietest), the slider the the and of handled slider the HKCU\ControlPanel\Sounds\StandardInCallVolume
end of here: the bottom by in-call beeps (standard), Within 'Script' at default annoying 'p'). sounds value HKCU\ControlPanel\Sounds\QuietestInCallVolume
for in change these 'play', value volume
to actually blank the