Stuff

No.     Time        Source                Destination           Protocol Info
  64058 72903.839502 40.30.20.10          10.20.30.40       SIP/SDP/ISUP(ITU) Request: INVITE sip:16788701200@10.20.30.40, with session description, ISUP:IAM

Frame 64058 (1011 bytes on wire, 1011 bytes captured)
Ethernet II, Src: JuniperN_a4:0c:63 (00:05:85:a4:0c:63), Dst: Chaintec_37:13:f7 (00:50:70:37:13:f7)
Internet Protocol, Src: 40.30.20.10 (40.30.20.10), Dst: 10.20.30.40 (10.20.30.40)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol
    Request-Line: INVITE sip:16788701200@10.20.30.40 SIP/2.0
    Message Header
        Via: SIP/2.0/UDP 40.30.20.10:5060;branch=z9hG4bK-47ad4414-895700
        To: <sip:16788701200@10.20.30.40>
        From: <sip:7066458884@40.30.20.10>;tag=8480777
        Call-ID: 1202537492-285858@SIPCROSSTEL
        CSeq: 1 INVITE
            Sequence Number: 1
            Method: INVITE
        Max-Forwards: 70
        Contact: <sip:7066458884@40.30.20.10:5060>
        Supported: 100rel
        Expires: 330
        Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, PRACK, REFER, SUBSCRIBE, NOTIFY, UPDATE, REGISTER
        P-Asserted-Identity: <sip:7066458884@10.170.172.4>
        MIME-Version: 1.0
        Content-Type: multipart/mixed;boundary=tekBoundary
        Content-Length: 369
    Message body
        MIME Multipart Media Encapsulation, Type: multipart/mixed, Boundary: "tekBoundary"
            [Type: multipart/mixed]
            First boundary: --tekBoundary\r\n
            Encapsulated multipart part:  (application/sdp)
                Content-Type: application/sdp\r\n
                \r\n
                Session Description Protocol
            Boundary: \r\n--tekBoundary\r\n
            Encapsulated multipart part:  (application/isup)
                Content-Type: application/isup; base=ansi92; version=ansi\r\n
                \r\n
                ISDN User Part
                    Message type: Initial address (1)
                    Nature of Connection Indicators: 0x4
                    Forward Call Indicators: 0x2200
                    Calling Party's category: 0xa (ordinary calling subscriber)
                    Transmission medium requirement: 3 (3.1 kHz audio)
                    Called Party Number: 16788701200
                    Pointer to start of optional part: 14
                    Calling Party Number: 7066458884
                    Parameter Type unknown/reserved (1 Byte)
                    Parameter Type unknown/reserved (1 Byte)
                    End of optional parameters (0)
            Last boundary: \r\n--tekBoundary--\r\n