Yealink SIP-T4X, Administrator'S Manual, Page: 285 / 475

Appendix
269
If it is set to 60, the LCD backlight is turned off
when the IP phone is inactive for 60 seconds.
Format Integer
Default Value 0
Range
Valid values are:
0-Always on
15-15s
30-30s
60-60s
120-120s
300-300s
600-600s
1800-1800s
Example phone_setting.backlight_time = 0
Parameter-
security.user_password
Configuration File
<y0000000000xx>.cfg
Description
Configures a new user password for the IP
phone.
The IP phone uses ―user‖ as the default user
password.
Note: IP phones support ASCII characters
32-126(0x20-0x7E) only in passwords.
Format user name:new password
Default Value user
Range ASCII characters 32-126(0x20-0x7E)
Example security.user_password = user:password123
Parameter-
security.user_password
Configuration File
<y0000000000xx>.cfg
Description
Configures a new administrator password for
the IP phone.
The IP phone uses ―admin‖ as the default