User Guide for the SIP-T54S Media IP Phone 
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2.  Press          or       , or the Switch soft key to select the desired value from the Active Level 
field. 
3.  Press          or          , or the Switch soft key to select the desired value from the Inactive 
Level field. 
4.  Press          or          , or the Switch soft key to select the desired time from the Backlight 
Time field. 
 
5.  Press the Save soft key to accept the change or the Back soft key to cancel. 
Backlight is configurable via web user interface at the path Settings->Preference. 
Language 
The default language of the phone user interface is English. If the language of your web browser 
is not supported by the phone, the web user interface will use English by default. You can 
change the language for the phone user interface and the web user interface respectively. 
To change the language for the phone user interface directly: 
1.  Press Menu->Basic->Language. 
2.  Press          or          to select the desired language. 
 
3.  Press the Save soft key to accept the change. 
Text displayed on the phone user interface will change to the selected language.