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Lawful communication interception—intercepting communication associated information

  • US 7,152,103 B1
  • Filed: 01/10/2001
  • Issued: 12/19/2006
  • Est. Priority Date: 01/10/2001
  • Status: Expired due to Fees
First Claim
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1. A method of capturing communication associated information (CAI) of a communication between a subject and an associate, the method comprising the steps of:

  • intercepting the communication, the communication comprising at least one packet and each packet comprising CAI;

    providing an application identifier (AID) in the at least one packet of the communication, the AID identifying the format of the CAI, wherein the AID is located in an optional field of Network Layer 3;

    extracting in accordance with the AID the CAI from the at least one packet for reporting;

    determining whether the extracted CAI is a new instance of the CAI;

    reporting a first message to a Law Enforcement Agency (LEA) in response to a determination that the extracted CAI is the new instance of the CAI;

    determining whether a predetermined amount of time has elapsed between packets of the at least one packet of the communication, the packets being identified by the CAI; and

    reporting a second message to an LEA in response to a determination that the given amount of time has elapsed, wherein the second message represents a timeout indication.

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