Yealink SIP-T54S Administrator's Manual page 296

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
Details of the Configuration Parameters:
gui_lang.url
Description:
Configures the access URL of the custom LCD language pack for the phone user interface.
Example:
gui_lang.url = http://192.168.10.25/000.GUI.English.lang
During the auto provisioning process, the IP phone connects to the HTTP provisioning
server "192.168.10.25", and downloads the language pack "000.GUI.English.lang". The
English language translation will be changed accordingly if you have modified the language
template file.
If you want to download multiple language packs to the phone simultaneously, you can
configure as following:
gui_lang.url = http://192.168.10.25/000.GUI.English.lang
gui_lang.url = http://192.168.10.25/001.GUI.Chinese_S.lang
Web User Interface:
None
Phone User Interface:
None
gui_lang.delete
Description:
Deletes the specified or all custom LCD language packs of the phone user interface.
Example:
Delete all custom language packs of the phone user interface:
gui_lang.delete = http://localhost/all
Delete a custom language pack of the phone user interface (e.g., 001.GUI.Chinese_S.lang):
gui_lang.delete = http://localhost/001.GUI.Chinese_S.lang
Web User Interface:
270
Parameters
Delete custom LCD language packs
of the phone user interface.
Parameter:
gui_lang.delete
Permitted Values
URL within 511 characters
http://localhost/all or
Y.GUI.nam
http://localhost/
e.lang
Default
Blank
Blank