Yealink SIP-T2XP Administrator's Manual page 194

Administrator's Guide for SIP-T2xP IP Phones
2． Select the desired value from the pull-down list of Busy Tone Delay (Seconds).
3． Click Confirm to accept the change.
Return code when refuse defines the return code and reason of the SIP response
message for the refused call. The caller's phone LCD screen displays the reason
according to the received return code. Available return codes and reasons are:
404 (Not Found)

480 (Temporarily Unavailable)

486 (Busy Here)

Procedure
Return code for refused call can be configured using the configuration files or locally.
Configuration File
Local
176
<y0000000000xx>.cfg
Web User Interface
Specify the return code and the
reason of the SIP response
message when refusing a call.
Parameter:
features.normal_refuse_code
Specify the return code and the
reason of the SIP response
message when refusing a call.
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load