380 Response Example
SIP/2.0 380 Alternative Service Via: SIP/2.0/UDP 192.168.15.2:5060;branch=z9hG4bK-23615-1-0 From: sipp <sip:911@192.168.15.2:5060>;tag=1 To: sut <sip:911@192.168.101.11:5060> Call-ID: 1-23615@192.168.15.2 CSeq: 1 INVITE Content-Type: application/3gpp-ims+xml Content-Length: 209 P-Asserted-Identity: sip:911-44e2etbufgibf@172.16.101.11:5060 Reason: Q.850; cause=63 <?xml version='1.0' encoding="UTF-8"?> <ims-3gpp version="1.0"> <alternative-service> <type>emergency</type> <action>emergency-registration</action> <reason>sample reason</reason> </alternative-service> </ims-3gpp>