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>