380 Response Format

The Oracle Communications Session Border Controller’s 380 SIP response to the sender includes:

• Content-Type header field set to application/3gpp-ims+xml
• P-Asserted-Identity header field set to the value of the SIP URI of the last entry on the Path header field value received during registration; It is the value of the SIP URI of the P-CSCF.
• 3GPP IM CN subsystem XML body containing an <ims-3gpp> element with the "version" attribute will be set to "1" and with an <alternative-service> child element set to "alternative service"
  • a <type> child element set to emergency
  • a <reason> child element set to the value of configuration element send-380-response
  • an <action> child element set to emergency-registration