Polycom SoundPoint IP 670 SIP User Manual page 27

If you do not press any keys on the phone, after 20 seconds of the backlight
turning on, the backlight dims (or changes) to medium in the following cases:
• 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
In all other cases, the mode changes to Backlight Idle.
To modify the backlight intensity:
1. Press
2. Select Settings > Basic > Backlight Intensity.
3. Select Backlight On Intensity.
4. Use or
Select soft key.
The default level is medium.
5. Select Backlight Idle Intensity.
Customizing Your SoundPoint
.
to select high, medium, low, or off, and then press the
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IP 670 Desktop Phone
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