Yealink SIP-T54S Administrator's Manual page 306

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
Save the keypad input method file and place it to the provisioning server (e.g.,
3.
192.168.10.25).
Specify the access URL of the custom keypad input method file in the configuration files.
4.
When adding new characters for the existing input method, ensure that the added characters
Note
are supported by IP phones.
The IP phones can only recognize the keypad input method files uploaded using Unicode
encoding.
Do not rename the keypad input method filename.
Procedure
Specify the access URL of the custom keypad input method file using the configuration files.
Configuration File
Details of Configuration Parameters:
gui_input_method.url
Description:
Configures the access URL of the custom keypad input method file.
Example:
gui_input_method.url = http://192.168.10.25/ime.txt
During the auto provisioning process, the IP phone connects to the provisioning server
"192.168.1.25", and downloads the custom keypad input method file "ime.txt".
gui_input_method.url = http://192.168.10.25/Russian_ime.txt
During the auto provisioning process, the IP phone connects to the provisioning server
"192.168.1.25", and downloads the custom keypad input method file "Russian_ime.txt" for
Russian language.
Note: If you want to upload a custom keypad input method file for the desired language,
you can name the file "language name_ime.txt".
280
<y0000000000xx>.cfg
Parameters
Specify the access URL of the
custom keypad input method file.
Parameter:
gui_input_method.url
Delete custom keypad input method
file of the phone user interface.
Parameter:
gui_input_method.delete
Permitted Values
URL within 511 characters
Default
Blank