User Guide for the SIP-T54S Media IP Phone 
42 
5.  Press the OK soft key to accept the change. 
The phone wallpaper will change to the selected picture. 
Note 
Changing the EXP Wallpaper 
Before changing the EXP wallpaper, ensure that the color-screen expansion module EXP50 is 
connected to the IP phone successfully. 
To change the EXP wallpaper via phone user interface: 
1.  Press Menu->Basic->Display->EXP Wallpaper. 
2.  Press          or          , or the Switch soft key to select the desired wallpaper image. 
 
3.  Press the Save soft key to accept the change or the Back soft key to cancel. 
If the wallpaper from the USB flash drive has been uploaded, you can change the desired 
wallpaper directly. Or you can change the wallpaper from the USB flash drive directly. 
Wallpaper for color-screen expansion module EXP50 is configurable via web user interface at 
the path Settings->Preference. 
Note 
Transparency 
If you are using a custom picture with a single color or complex background as the wallpaper 
(refer to Wallpaper), it may affect your experience of the idle screen display. You can choose an 
appropriate transparency for DSS key labels and status bar on the idle screen as required. 
   
The SIP-T54S media IP phone screen size is 4.3 inches (Resolution: 480x272). If the size of the 
custom wallpaper doesn’t meet the IP phone screen size, the wallpaper will be stretched or 
zoomed out according to the screen size. 
The color-screen expansion module EXP50 screen size is 4.3 inches (Resolution: 272x480). If the 
size of the custom wallpaper doesn’t meet the expansion module screen size, the wallpaper will 
be stretched or zoomed out according to the screen size.