Frame 1776 (402 bytes on wire, 402 bytes captured)
Internet Protocol, Src Addr: 10.200.1.4 (10.200.1.4), Dst Addr: vocal.engdomain.com (10.250.250.202)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060)
Session Initiation Protocol
    Request line: ACK sip:1142@vocal.engdomain.com SIP/2.0
        Method: ACK
    Message Header
        Via: SIP/2.0/UDP 10.200.1.4:5060;branch=z9hG4bK-3k6oqlesj2mi
        Max-Forwards: 70
        From: "jringle" <sip:jringle@10.250.250.202>;tag=24th1b497c
        To: <sip:1142@vocal.engdomain.com>;tag=a83de056
        Call-ID: 3c41defa1e61-otf1blzfc8ak@10.200.1.4
        CSeq: 1 ACK
        Contact: <sip:jringle@10.200.1.4:5060;line=1>
        Content-Length: 0