Yealink SIP-T2XP Administrator's Manual page 293

Format
Default Value
Range
Example
Parameter-
phone_setting.active_backlight
_level
Description
Format
Default Value
Range
Example
Parameter-
phone_setting.backlight_time
Description
For SIP-T19P and SIP-T21P IP phones, it
configures the LCD's contrast of the IP phone
only.
Note: We recommend that you set the contrast
of the LCD screen to 6 as a more comfortable
level. It is only applicable to SIP-T19P , SIP-T21P
and SIP-T28P IP phones, and EXP39 connected
to SIP-T26P and SIP-T28P IP phones.
Integer
6
1 to 10
phone_setting.contrast = 6
Configuration File
<y0000000000xx>.cfg
Configures the backlight idle intensity used to
adjust the backlight intensity of the LCD screen
Level 3 is the brightest.
Note: It is only applicable to SIP-T28P IP phones
and the connected EXP39.
Integer
2
1 to 3
phone_setting.active_backlight_level = 2
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 (60s), the LCD backlight is
turned off when the IP phone is inactive for 60
seconds.
Note: It is not applicable to SIP-T19P , SIP-T20P
Appendix
277