VT VT9400 DECT - Headset Mute Button

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The multi-function button can answer calls and end calls using a combination of taps, double-taps or
presses .
Function Tap Press hold
Answer incoming call √
End current call √
Power on √
Power off √
5.2 HEADSET SPEAKER VOLUME BUTTONS
The speaker volume buttons adjust the headset speaker volume.
5.3 HEADSET MUTE BUTTON
The mute button mutes or un-mutes the headset microphone.
Multi-function button
Speaker volume button＂+＂
Speaker volume button”-＂