Specifications

Configuring Basic Features
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 Always On: Backlight is turned on permanently.
 15, 30, 60 or 120: Backlight is turned off when the IP phone is inactive after a preset
period of time (in seconds), but it is automatically turned on if the status of the IP
phone changes or any key is pressed.
The following table lists available methods and configuration options to configure the
backlight of each phone model.
Phone Model
Configuration Methods
Configuration Options
SIP-T28P
Configuration Files
Web User Interface
Phone User Interface
Backlight Idle Intensity
Backlight Time
SIP-T26P
Configuration Files
Web User Interface
Backlight Time
SIP-T22P
Configuration Files
Web User Interface
Backlight Time
Procedure
Backlight can be configured using the configuration files or locally.
Configuration File
<y0000000000xx>.cfg
Configure the backlight of the
LCD screen.
For more information, refer to
Backlight on page 263.
Local
Web User Interface
Configure the backlight of the
LCD screen.
Navigate to:
http://<phoneIPAddress>/servlet
?p=settings-preference&q=load
Phone User Interface
Configure the backlight of the
LCD screen (only applicable to
the SIP-T28P IP phone).
To configure backlight via web user interface:
1. Click on Settings->Preference.
2. Select the desired value from the pull-down list of Backlight Idle Intensity.
This is only applicable to the SIP-T28P IP phone.