Frame 1784 (305 bytes on wire, 305 bytes captured)
Internet Protocol, Src Addr: vocal.engdomain.com (10.250.250.202), Dst Addr: 10.200.1.4 (10.200.1.4)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060)
Session Initiation Protocol
    Status line: SIP/2.0 100 Trying
        Status-Code: 100
    Message Header
        Via: SIP/2.0/UDP 10.200.1.4:5060;branch=z9hG4bK-xnnczf649md6
        To: <sip:1142@vocal.engdomain.com>
        From: "jringle" <sip:jringle@10.250.250.202>;tag=24th1b497c
        Call-ID: 3c41defa1e61-otf1blzfc8ak@10.200.1.4
        CSeq: 2 INVITE
        Content-Length: 0