Customizing Your SoundPoint® IP 550 Desktop Phone
3.Select Backlight On Intensity.
4.Use 
or 
to select high, medium, low, or off, and then press the Select soft key.
The default level is medium.
5.Select Backlight Idle Intensity.
6.Use 
or 
to select high, medium, low, or off, and then press the Select soft key.
The default level is low.
7.Select Maximum Intensity.
8.Press the Up or Down soft keys to increase or decrease the backlight intensity.
9.Press the Ok or Cancel soft keys to accept or cancel changes.
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