Yealink SIP-T21 E2

Configuring Basic Features
205
Phone Model (and
the connected
expansion module)
Configuration
Methods
Configuration Options
Phone User
Interface
Backlight Time
T42G/S
T41P/S
T40P/G
T23P/G
T21(P) E2
CP860
CP920
Configuration Files
Web User Interface
Phone User
Interface
Backlight Time
Procedure
Backlight can be configured using the following methods.
Central Provisioning
(Configuration File)
<y0000000000xx>.
cfg
Configure the backlight of the LCD screen.
Parameters:
phone_setting.active_backlight_level
phone_setting.inactive_backlight_level
phone_setting.backlight_time
Web User Interface
Configure the backlight of the LCD screen.
Navigate to:
http://<phoneIPAddress>/servlet?p=setti
ngs-preference&q=load
Phone User Interface
Configure the backlight of the LCD screen.
Details of Configuration Parameters:
Parameters
Permitted Values
Default
phone_setting.active_backlight_level
Integer from 1 to 10
8
Description:
Configures the intensity of the LCD screen when the phone is active.
10 is the highest intensity.
For T54S/T52S IP phones, it configures the LCD’s intensity of the IP phone and the
connected EXP50.
For T48G/T48S/T46G/T46S IP phones, it configures the LCD’s intensity of the IP phone and
the connected EXP40.