INVITE sip:1@192.168.0.6 SIP/2.0
Route: <sip:foo@192.168.0.4:5064;lr>
From: <sip:888@10.1.1.144;user=phone>;tag=bbb
To: <sip:3000@192.168.0.3:3000;user=phone>
Call-Id: 8
Cseq: 1 INVITE
Content-Length: 0
