INVITE sip:user@example.com SIP/2.0
To: sip:j.user@example.com
From: sip:caller@example.net;tag=134161461246
Max-Forwards: 7
Call-ID: badinv01.0ha0isndaksdjasdf3234nas
CSeq: 8 INVITE
Via: SIP/2.0/UDP 192.0.2.15;;,;,,
Contact: "Joe" <sip:joe@example.org>;;;;
Content-Length: 152
Content-Type: application/sdp

v=0
o=mhandley 29739 7272939 IN IP4 192.0.2.15
s=-
c=IN IP4 192.0.2.15
t=0 0
m=audio 49217 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC
