Yealink SIP-T2 SERIES Administrator's Manual page 156

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Configures the intensity of the LCD screen when the phone is inactive.
0-Off
1-Low
Note: It is only applicable to SIP VP-T49G/SIP-T48G/T46G/T29G IP phones.
Web User Interface:
Settings->Preference->Backlight Inactive Level
Phone User Interface:
Menu->Basic->Display->Backlight->Backlight Inactive Level
phone_setting.backlight_time
Description:
Configures the delay time (in seconds) to change the intensity of the LCD screen
when the IP phone is inactive.
0-Always On
1-Always Off (not applicable to SIP VP-T49G/SIP-T48G/T46G/T29G IP phones)
15-15s
30-30s
60-60s
120-120s
300-300s
600-600s
1800-1800s
If it is set to 60 (60s), the intensity of the LCD screen will be changed when the IP
phone has been inactivated for 60 seconds.
For SIP VP-T49G/SIP-T48G/T46G/T42G/T41P/T29G/CP860:
The default value is 0.
For SIP-T40P/T27P/T23P/T23G/T21(P) E2:
The default value is 30.
Note: It is not applicable to SIP-T19(P) E2 IP phones.
Web User Interface:
Settings->Preference->Backlight Time(seconds)
Phone User Interface:
Menu->Settings->Basic Settings->Display->Backlight->Backlight Time
To configure backlight via web user interface (take SIP-T23G IP phones for example):
1. Click on Settings->Preference.
134
0, 1, 15, 30, 60, 120, 300, 600
or 1800
Refer to
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