Dell C2722DE 27" 16:9 IPS Video Conferencing Monitor - Manual (Page 11)

About your monitor | 11
8 Teams button & LED LED will light in static white when Microsoft Teams ®
is signed in and running.
LED will blink when there is a Teams notification.
Short press on the button to bring up Teams and
open notification.
9 Hookswitch & LED LED will blink in green when there is an incoming
Teams/Skype for Business (SfB) call.
LED will light up in static green during Teams/Skype
for Business (SfB) call.
Short press to answer / end call.
Long press to reject incoming call.
10 Volume down & LED Short press for 2 unit volume decrement.
Long press for continuous volume decrement.
11 Volume up & LED Short press for 2 unit volume increment.
Long press for continuous volume increment.
12 Microphone mute &
LED Press to mute and unmute microphone.
LED will light up in static red when mic is muted or
when the webcam & mic module is retracted.
LED will go dark when mic is enabled/unmuted.
13 Power LED indicator Solid white light indicates the monitor is turned
on and functioning normally. Breathing white light
indicates the monitor is in Standby Mode.