Polycom VVX300 User Manual page 25

Press the Home, Select Settings
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Select 1. Basic > Backlight Intensity
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3 types of Intensity:
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Backlight On : brightness of the screen when there is phone activity
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Backlight Idle : brightness of the screen when there is no phone activity
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Maximum: brightness scale that applies to Backlight On & Backlight Idle intensities
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You can adjust the Backlight On and Idle intensities from low to high (VVX300/310: additional off
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level)
You can adjust the Maximum intensity from 0 to 15 using the Up and Down softkeys
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The Backlight Timeout can also be modified
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Backlight timeout is the number of seconds the phone is inactive before the backlight dims to its Backlight Idle
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intensity. Timeout period begins after last key press or last phone event, such as an incoming call.
Press the Home, Select Settings > Basic > Backlight Timeout
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Adjust the backlight
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