Polycom SoundPoint IP 450 User Manual page 85

• Backlight On Intensity—the brightness of the screen when you press a key,
have an incoming call, end or hold a call, or a call is resumed by the
another party. You can set a high, medium, or low level.
• Backlight Idle Intensity—the brightness of the screen after the phone has
been idle for a certain number of seconds (as defined by the backlight
timeout). You can set a high, medium, or low level.
• Maximum Intensity—the entire backlight intensity scale. For example, if
you decrease the Maximum Intensity, the Low, Medium, and High values
for the Backlight On Intensity and the Backlight Idle Intensity will
decrease proportionally.
If you do not press any keys on the phone, after 20 seconds of the backlight
turning on (the default backlight timeout), the backlight changes to the
Backlight Idle Intensity. If one of the following phone events is taking place,
the backlight changes to medium:
• A call is in progress
• A call is on hold
• There is an incoming call (ringing)
• There is an outgoing call (ringing back)
• Any menu shows on the display
To modify the backlight intensity:
Press
1
Select Settings > Basic > Backlight Intensity.
2
Select Backlight On Intensity.
3
.
Customizing Your Phone
75