Yealink SIP-T4X Administration Manual page 277

Administrator's Guide for SIP-T4X IP Phones
Parameter-
phone_setting.active_backlight
_level
Description
Format
Default Value
Range
Example
Parameter-
phone_setting.inactive_backlig
ht_level
Description
Format
Default Value
Range
Example
Parameter-
phone_setting.backlight_time
Description
262
Configuration File
<y0000000000xx>.cfg
Configures the backlight level used to adjust
the backlight intensity of the LCD screen.
10 is the brightest backlight level.
Note: It is only applicable to SIP-T46G IP
phones and the connected EXP40.
Integer
8
1 to 10
phone_setting.active_backlight_level = 8
Configuration File
<y0000000000xx>.cfg
Configures whether the IP phone to turn off or
turn dusky the backlight of the LCD screen
after a period of inactivity.
Note: It is only applicable to SIP-T46G IP
phones.
Boolean
1
Valid values are:
0-Off
1-Low
phone_setting.inactive_backlight_level = 1
Configuration File
<y0000000000xx>.cfg
Configures the delay time to turn off the
backlight when the IP phone is inactive.
If it is set to 60, the LCD backlight is turned off