User Guide for the Polycom CX700 IP Phone
2Select Brightness.
3Using 
or
, select your desired level.
4Press the OK soft key to save your changes or the Cancel soft key to exit the Brightness screen without making changes.
Enabling High Contrast
High contrast color schemes can increase readability by using higher contrast color combinations on the screen. With this change, you can operate the telephone in
To enable high contrast on your phone:
1Press the Settings soft key.
2Select High Contrast.
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