INVITE sip:user@company.com?Route=%3Csip:sip.example.com%3E SIP/2.0
To: sip:user@company.com
From: sip:caller@university.edu
Call-ID: 5@10.0.0.1
CSeq: 1 INVITE
Via: SIP/2.0/UDP 135.180.130.133
Content-Type: application/sdp
Content-Length: 174

v=0
o=mhandley 29739 7272939 IN IP4 126.5.4.3
s=SIP Call
c=IN IP4 135.180.130.88
t=3149328700 0
m=audio 49210 RTP/AVP 0 12
m=video 3227 RTP/AVP 31
a=rtpmap:31 LPC/8000


