User guide

Yealink IP Phones Auto Provisioning Guide
282
Parameter
Permitted
Values
Descriptions
Web Setting Path
phone_setting.inactive_backlight_level
(only applicable to SIP-T48G/T46G/T29G IP phones)
0 or 1
It configures the intensity of the LCD screen
when the phone is inactive.
0-Off
1-Low
The default value is 1.
Settings-> Preference->Backlight
Inactive Level
phone_setting.backlight_time
0, 1, 15, 30, 60,
120, 300, 600
or 1800
It configures the delay time (in seconds) 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.
0-Always On
1-Always Off (not applicable to
SIP-T48G/T46G/T29G IP phones)
15-15s
30-30s
60-60s
120-120s
300-300s
600-600s
Settings->Preference->Backlight Time
(seconds)