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Configuring Basic Features55Backlight determines the brightness of the LCD screen display, allowing users to readeasily in dark environments. Backlight time specifies the delay time to turn off thebacklight when the IP phone is inactive. Backlight turns off quickly if a short backlighttime is configured, this may not give users enough time to read messages.You can configure the backlight time as one of the following types: Always On: Backlight is turned on permanently. 15, 30, 60, 120, 300, 600 or 1800: Backlight is turned off when the IP phone is inactiveafter a preset period of time (in seconds), but it is automatically turned on if thestatus of the IP phone changes or any key is pressed.The following table lists available methods and configuration options to configure thebacklight of phone model.Phone Model Configuration Methods ConfigurationOptionsSIP-T23 (P/G)Configuration FilesWeb User InterfacePhone User InterfaceBacklight TimeProcedureBacklight can be configured using the configuration files or locally.ConfigurationFile .cfgConfigure the backlight of the LCDscreen.Parameters:phone_setting.backlight_timeLocalWeb User InterfaceConfigure the backlight of the LCDscreen.Navigate to:http:///servlet?p=settings-preference&q=loadPhone User Interface Configure the backlight of the LCDscreen.Details of Configuration Parameters:phone_setting.backlight_time 0, 15, 30, 60, 120, 300, 600 or 1800 0Description:Configures the delay time (in seconds) to turn off the backlight when the IP phone isinactive.
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