INVITE sip:sip%3Auser%40example.com@company.com;other-param=summit SIP/2.0
To: sip:user@company.com
From: sip:caller@university.edu
Call-ID: 4@10.0.0.1
CSeq: 1 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp
Content-Length: 163

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
s=SIP Call
t=0 0
c=IN IP4 135.180.130.88
m=audio 492170 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC
