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CS 6757i IP PHONE USER GUIDE V3.2.2  AASTRA - 2788-003 
CLEARSPAN® IS A REGISTERED TRADEMARK OF AASTRA TECHNOLOGIES LTD.  PAGE 39 OF 116 
4.1.4  Display 
The Display option provides 7 contrast settings that brighten or darken the display. You can also 
define when the backlight of the display will turn off. 
 
Go to Options > Preferences > Display. 
The Display options screen displays and 
Contrast Level is the first option. 
Display
    1.Contrast Level
    2.Backlight
Select
Done
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The Contrast Level screen displays. 
Contrast Level
Done
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Use   and   to set the contrast level.