Frame 16 (535 bytes on wire, 535 bytes captured)
Internet Protocol, Src Addr: 10.200.1.4 (10.200.1.4), Dst Addr: 10.250.250.202 (10.250.250.202)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060)
Session Initiation Protocol
    Request line: ACK sip:1416@10.250.250.202:5060;maddr=10.250.250.202 SIP/2.0
        Method: ACK
    Message Header
        Via: SIP/2.0/UDP 10.200.1.4:5060;branch=z9hG4bK-2l5j5qakw4e5
        Max-Forwards: 70
        From: "jringle" <sip:jringle@10.250.250.202>;tag=y15w2v0hsd
        To: <sip:1416@10.250.250.202;user=phone>;tag=7hih3peh59
        Call-ID: 3c41dede1ca4-hbbht6cxjl7v@10.200.1.4
        CSeq: 2 ACK
        Route: <sip:kkeim@10.250.250.202:5060;maddr=10.250.250.202>
        Route: <sip:kkeim@10.200.1.3:5060;line=1>
        Contact: <sip:jringle@10.200.1.4:5060;line=1>
        Content-Length: 0