Frame 15 (593 bytes on wire, 593 bytes captured)
Internet Protocol, Src Addr: 10.250.250.101 (10.250.250.101), Dst Addr: 10.250.250.201 (10.250.250.201)
User Datagram Protocol, Src Port: 1917 (1917), Dst Port: 5060 (5060)
Session Initiation Protocol
    Request line: ACK sip:5550101@vocal2.engdomain.com SIP/2.0
        Method: ACK
    Message Header
        Route: <sip:5550101@10.250.250.201:5060;maddr=10.250.250.201>, <sip:95550101@10.250.250.201:5065;maddr=10.250.250.201>, <sip:95550101@10.250.250.104;user=phone>
        Contact: sip:1017@10.250.250.101
        From: <sip:1017@vocal2.engdomain.com>;tag=2c18069
        To: <sip:5550101@vocal2.engdomain.com>;tag=25836
        Call-Id: call-1042670570-91@10.250.250.101
        Cseq: 1 ACK
        Accept-Language: en
        User-Agent: Pingtel/2.1.3 (VxWorks)
        Date: Wed, 15 Jan 2003 22:42:55 GMT
        Via: SIP/2.0/UDP 10.250.250.101
        Content-Length: 0