Cisco 8831 - Phone screen

Table 2: Sound Base buttons
DescriptionItem
Three LED indicators provide call status information. For
details on LED behaviour, see LED state definitions, on page
12.
LED indicators1, 2, 3
Backlit mute button.Mute button4
Cisco Unified IP Conference Phone 8831 Administration Guide for Cisco Unified Communications Manager 9.0
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Cisco Unified IP Conference Phone 8831
Sound Base