Yealink T58A Administrator's Manual page 56

2. Modify the characters within the double quotation marks on the right of the equal sign.
Do not modify the item on the left of the equal sign.
The following shows a portion of the language pack "000.GUI.English.lang" for the phone user interface:
3. Save the language pack and place it to the provisioning server.
Custom Language for Device Display Configuration
The following table lists the parameters you can use to configure a custom language for a device display.
Parameter gui_lang.url
Description It configures the access URL of the custom language pack for the phone user
interface.
You can also download multiple language packs to the device simultaneously.
Permitted Values URL within 511 characters
Default
Blank
Parameter gui_lang.delete
Description It deletes the specified or all custom language packs of the phone user interface.
| Device Customization | 56
<y0000000000xx>.cfg
<y0000000000xx>.cfg