Polycom IP 650 User Manual page 25

• Incoming calls
• Ending a call, holding a call, resuming a call by the other party
• A voice or instant message received
• A USB device plugged in or unplugged
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 the or
Select soft key to modify the Backlight On Intensity.
The default level is medium.
Customizing Your SoundPoint IP 650 SIP Phone
.
to select high, medium, low, or off and press the
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