7.5.4  Activate/deactivate meeting mode (progressive ringing)  
•  More options  
o   Progressive ringing   To activate. 
o   Progressive ringing   To deactivate. 
•   End /   To adjust other audio features. 
7.5.5  Activate/deactivate discreet ring mode  
•  More options  
o   One beep before ringing /   Three beeps before ringing   To activate. 
o   One beep before ringing /   Three beeps before ringing   To deactivate. 
•   End /   To adjust other audio features. 
7.5.6  Adjust ringer volume while a call arrives  
•  Your telephone rings. 
•   Adjusting the ringer volume. 
7.6  Adjusting the brightness of the deskphone (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). 
7.6.1  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 brightness auto 
•  Activate or deactivate the feature.  
7.6.2  Adjust the brightness when the phone is in use 
•   or  (long press)  Display   Brightness 
•   Increase or decrease the brightness. 
•   
•   
7.6.3  Adjust the dimmed brightness when the phone is not in use 
•   or  (long press)  Display   Advanced  Low brightness 
•   Increase or decrease the brightness. 
•   
•