Your administrator can reduce the amount of power your phone screen uses when you're not using your phone.
Your administrator can set up these energy-saving levels on your phone:
Power Save—The backlight or screen turns off when the phone is inactive for a set interval.
Power Save Plus—Your phone screen turns on and off at times that are based on your work schedule. If your work hours or work days change, you can contact your administrator to reconfigure your phone.
For example, your administrator can set your phone to alert you 10 minutes before it turns off. You see the Select
button light up and you get a message that your phone is turning off soon. You get notifications at these intervals:
Four rings at 10 minutes before power off
Four rings at 7 minutes before power off
Four rings at 4 minutes before power off
15 rings at 30 seconds before power off
If your phone is active, it waits until it has been inactive for a set interval before it notifies you of the pending power shutdown.
The Cisco IP Phone 7811 doesn't support Power Save or Power Save Plus.