Adjusting the brightness of the desk phone (8078s, 8068s, 8058s, 8028s 
Premium DeskPhone) 
Adjust the brightness of the display, the LEDs, the keys (add-on) and the logo light on the back shell 
(optional). 
  Auto-adjusting of the brightness 
The phone can automatically adjust the display brightness, LED and busy light logo on the back shell (if 
present) depending on the lighting conditions to improve user experience and achieve power savings 
(ambient light sensor). 
: This icon is only available on the 8078s Premium DeskPhone. 
Auto-adjusting of the display brightness 
•   Or   (long press)  Display   Auto-Brightness 
•  Activate or deactivate the feature.  
Auto-adjusting of the LED brightness and the busy light logo on back shell (if present) 
•   Or   (long press)  Display   Advanced  LED Auto-Brightness 
•  Activate or deactivate the feature.  
  Adjust the brightness when the phone is in use 
•   Or   (long press)  Display   Brightness 
•   Increase or decrease the brightness. 
•   
•   
  Adjust the dimmed brightness when the phone is not in use 
•   Or   (long press)  Display   Advanced  Low brightness 
•   Increase or decrease the brightness. 
•   
•   
  Set the delay before the brightness is dimmed when the phone is not in use 
(screensaver) 
•   Or   (long press)  Display   Screensaver 
•   Set the time delay (default 4 hours). 
•   
•   
: This icon is only available on the 8078s Premium DeskPhone.