Yealink SIP-T54S Administrator's Manual page 320

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
Configures the access URL of the custom file for the soft key presented on the LCD screen
when in the CallFailed state.
Example:
custom_softkey_call_failed.url = http:// 192.168.1.20/XMLfiles/CallFailed.xml
During the auto provisioning process, the IP phone connects to the provisioning server
"192.168.1.20", and downloads the CallFailed state file from the "XMLfiles" directory.
Web User Interface:
None
Phone User Interface:
None
custom_softkey_call_in.url
Description:
Configures the access URL of the custom file for the soft key presented on the LCD screen
when in the CallIn state.
Example:
custom_softkey_call_in.url = http://192.168.1.20/XMLfiles/CallIn.xml
During the auto provisioning process, the IP phone connects to the provisioning server
"192.168.1.20", and downloads the CallIn state file from the "XMLfiles" directory.
Web User Interface:
None
Phone User Interface:
None
custom_softkey_connecting.url
Description:
Configures the access URL of the custom file for the soft key presented on the LCD screen
when in the Connecting (callout) state.
Example:
custom_softkey_connecting.url = http://192.168.1.20/XMLfiles/Connecting.xml
During the auto provisioning process, the IP phone connects to the provisioning server
"192.168.1.20", and downloads the Connecting state file from the "XMLfiles" directory.
Web User Interface:
None
Phone User Interface:
294
Parameters Permitted Values
URL within 511 characters
URL within 511 characters
Default
Blank
Blank