INVITE sip:0 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.9;branch=107
Max-Forwards: 70
To: <sip:0>
From: <sip:41215500311@192.168.1.15>;tag=102
User-Agent: UDP Packet Sender
Call-ID: 070403-191201@192.168.1.9
CSeq: 1000 INVITE
Contact: <sip:41215500311@192.168.1.9>
Content-Type: application/sdp
Content-Length: 0