3147 - Emergency Call Fallback
You can enable the rejection of priority calls per a configured SIP interface. When this option is enabled, the Oracle Communications Session Border Controller does not allow priority calls through that SIP interface, and the call is rejected with a 380 response.
If the send-380-response parameter in the SIP interface is configured, this string is provided as a reason in the 380 message. If this parameter is not populated, the default message priority calls not allowed is sent.