Yealink T54S

Table of Contents
vii
Example: Deploying Phones from the Provisioning Server ................................................................................... 89
Firmware Upgrade ....................................................................... 91
Firmware for Each Phone Model ...................................................................................................................................... 91
Firmware Upgrade Configuration .................................................................................................................................... 92
Phone Customization................................................................... 93
Language .................................................................................................................................................................................... 94
Supported Languages.................................................................................................................................................. 94
Language Display Configuration ............................................................................................................................. 95
Language Customization ............................................................................................................................................ 96
Example: Setting a Custom Language for Phone Display .......................................................................... 101
Contrast ..................................................................................................................................................................................... 101
Contrast Configuration .............................................................................................................................................. 101
Wallpaper ................................................................................................................................................................................. 102
Wallpaper Configuration .......................................................................................................................................... 102
Wallpaper Customization ......................................................................................................................................... 104
Adding a Wallpaper from a USB Flash Drive .................................................................................................... 105
Example: Setting a Custom Picture as Wallpaper .......................................................................................... 105
Transparency ........................................................................................................................................................................... 105
Transparency Configuration .................................................................................................................................... 106
Screen Saver ............................................................................................................................................................................ 106
Screensaver Display Customization ..................................................................................................................... 107
Custom Screensaver Picture Limit ........................................................................................................................ 109
Screensaver Configuration ....................................................................................................................................... 110
Adding a Screensaver Picture from a USB Flash Drive ................................................................................ 113
Deleting a Screensaver Picture .............................................................................................................................. 113
Backlight ................................................................................................................................................................................... 113
Supported Backlight Options ................................................................................................................................. 114
Backlight Brightness and Time Configuration ................................................................................................. 114
Label Length for Line Key Display .................................................................................................................................. 116
Label Length Display Configuration .................................................................................................................... 117
Label Alignment for Line/Ext Key Display ................................................................................................................... 117
Label Alignment Display Configuration ............................................................................................................. 118
Linekey Length in Short ...................................................................................................................................................... 118
Linekey Length Shorten Rules ................................................................................................................................ 119
Linekey Length in Short Configuration ............................................................................................................... 119
Page Switch Key ..................................................................................................................................................................... 120
Page Switch Key Configuration.............................................................................................................................. 120
Page Tips .................................................................................................................................................................................. 120
Phone Page Tips ........................................................................................................................................................... 121
Expansion Module Page Tips .................................................................................................................................. 122