INVITE  sip:user@example.com  SIP/2.0
Max-Forwards: 8
To: sip:user@example.com
From: sip:caller@example.net;tag=8814
Call-ID: lwsstart.dfknq234oi243099adsdfnawe3@example.com
CSeq: 1893884 INVITE
Via: SIP/2.0/UDP host1.example.com;branch=z9hG4bKkdjuw3923
Contact: <sip:caller@host1.example.net>
Content-Type: application/sdp
Content-Length: 150

v=0
o=mhandley 29739 7272939 IN IP4 192.0.2.1
s=-
c=IN IP4 192.0.2.1
t=0 0
m=audio 49217 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC
