Yealink SIP-T3 Administrator's Manual page 233

custom wallpaper name (for example, wallpaper.jpg)
Default Default.jpg (Default.png for T46U)
Supported
All color screen phones
Devices
T57W/T54W/T53C/T48U/T46U/CP925/CP935W:
Settings > Preference > Upload Wallpaper > System Wallpaper
Web UI
Other Phones:
Settings > Preference > Wallpaper
Menu > Basic > Display > Wallpaper
Phone UI CP925/CP935W:
More > Basic > Display > Wallpaper
Parameter expansion_module.backgrounds
Description It configures the wallpaper displayed on the connected EXP50 expansion module of the phone.
T57W/T54W/T53W/T53/T53C:
Default-exp50.jpg, 01-exp50.jpg, 02-exp50.jpg, 03-exp50.jpg, 04-exp50.jpg, 05-exp50.jpg, 06-
exp50.jpg, 07-exp50.jpg, 08-exp50.jpg, 09-exp50.jpg or 10-exp50.jpg or custom wallpaper name (for
Permitted
example, wallpaper.jpg)
Values
T48U/T46U/T43U:
Default-exp.jpg, 01-exp.jpg, 02-exp.jpg, 03-exp.jpg, 04-exp.jpg, 05-exp.jpg or custom wallpaper name
(for example, wallpaper.jpg)
T57W/T54W/T53W/T53/T53C:
Default-exp50.jpg
Default
T48U/T46U/T43U:
Default-exp.jpg
Supported
T57W, T54W, T53W, T53, T53C, T48U, T46U, T43U
Devices
Web UI
Settings > Preference > Upload Wallpaper > System Expansion Wallpaper
T57W/T54W/T53C/T48U/T46U:
Phone UI
Menu > Basic > Display > EXP Wallpaper > Wallpaper
Parameter phone_setting.backgrounds_with_dsskey_unfold <y0000000000xx>.cfg
Description It configures the wallpaper displayed on the phone when the DSS key list is unfolded.
T57W/T48S/T48G:
Auto, Default.jpg, 01.jpg, 02.jpg, 03.jpg, 04.jpg, 05.jpg, 06.jpg, 07.jpg, 08.jpg, 09.jpg or 10.jpg or
uploaded custom wallpaper name (for example, wallpaper.jpg)
Permitted
Values
T48U:
Auto, Default.jpg, 01.jpg, 02.jpg, 03.jpg, 04.jpg, 05.jpg or uploaded custom wallpaper name (for
example, wallpaper.jpg)
Auto
Default
(use the wallpaper configured by the parameter "phone_setting.backgrounds")
Supported T57W, T48U, T48S, T48G
<y0000000000xx>.cfg
Phone Customization
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