Compucessory 55251 Serie Guía De Instalación Y Manual De Usuario página 10

I.3.6 Mute Switch
The Mute Switch (7) enables you to place a caller on hold by
pressing it down. When the button is pressed down, the caller cannot
hear you, but you can still hear them. To resume communication,
press it again to release the button. You can see a color bar
surrounding the button, when the color bar is visible, there is no mute,
and when the color bar is not visible, then the call is muted.
I.3.7 Slide Reception Volume Control
The Slide Reception Volume Control (13) is for adjusting the volume
of the sound to the headset speaker or speaker box. By sliding the
button up and down, you can obtain the desired volume.
8 E N G L I S H