Plantronics MCD100-M USB Speakerphone
8
3
Using Your MCD100-M USB Speakerphone
Volume Up, Volume Down, and Mute
1
Press the down arrow (left button) to decrease the
speaker volume.
2
Press the up arrow (right button) to increase the speaker
volume
.
NOTE
A prolonged press of the Volume buttons will increase or
decrease the volume several levels until you stop pressing the
button. The MCD100-M will beep when a volume up button or
volume down button is pressed and a series of beeps when a
prolonged press is performed. Each beep signals one level of
volume increase or decrease.
3
Press the microphone icon (middle button) to mute
the microphone.
A blue light will flash indicating that the
microphone is muted.
4
Press this button again to unmute.
The blue light will
become solid indicating the microphone is unmuted.
