User Guide - Calisto P420-M USB
Page 8
... become solid indicating the microphone is unmuted. Plantronics P420-M USB Speakerphone 8 3 Using your P420-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 button or volume down button is pressed and a series of beeps when a prolonged press is muted...
... become solid indicating the microphone is unmuted. Plantronics P420-M USB Speakerphone 8 3 Using your P420-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 button or volume down button is pressed and a series of beeps when a prolonged press is muted...
User Guide - Calisto P420 USB
Page 6
A blue light will become solid indicating the microphone is performed. Plantronics P420 USB Speakerphone 6 Note A prolonged press of the volume buttons will beep when a volume up arrow (right button) to increase the speaker volume. Each beep ... down and mute 1 Press the down arrow (left button) to decrease the speaker volume. 2 Press the up button or volume down button is pressed and a series of beeps when a prolonged press is unmuted.
A blue light will become solid indicating the microphone is performed. Plantronics P420 USB Speakerphone 6 Note A prolonged press of the volume buttons will beep when a volume up arrow (right button) to increase the speaker volume. Each beep ... down and mute 1 Press the down arrow (left button) to decrease the speaker volume. 2 Press the up button or volume down button is pressed and a series of beeps when a prolonged press is unmuted.
