Cisco 8832 User Manual page 29

1 High-contrast visual and audible alert of
incoming call with the LED bar
The LED bar is located above the Mute
button and the screen.
Use the Mute button to toggle the
microphone on or off. When the
microphone is muted, the LED bar lights
red. When you turn on Mute, your phone
beeps once; when you turn off Mute,
your phone beeps twice.