Yealink SIP-T2xP Administrator's Manual page 301

Format
Default Value
Range
Example
Parameter-
phone_setting.contrast
Description
Format
Default Value
Range
Example
the parameter
"phone_setting.common_power_led_enable
".
Boolean
1
Valid values are:
0-Disabled (power indicator LED is off)
1-Enabled ( power indicator LED is solid
green)
phone_setting.talk_and_dial_power_led_en
able = 1
Configuration File
<y0000000000xx>.cfg
Configures the contrast of the LCD screen.
For SIP-T28P IP phones, it configures the LCD's
contrast of the IP phone and the connected
EXP39.
For SIP-T26P IP phones, it configures the LCD's
contrast of the connected EXP39 only.
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
Appendix
285