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Method and apparatus for intercept of wireline communications

  • US 6,549,613 B1
  • Filed: 11/05/1998
  • Issued: 04/15/2003
  • Est. Priority Date: 11/05/1998
  • Status: Expired due to Term
First Claim
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1. A method of intercepting calls for a subject under surveillance (SUS) in a Signaling System 7 (SS7) Advanced Intelligent Network (AIN) compliant telephone system, comprising:

  • arming at least one AIN call processing trigger in an end-office switch for a SUS'"'"'s subscriber line;

    the at least one trigger causing a first message to be sent to a delivery function unit upon a call to a called party, the at least one trigger further causing a second message to be sent to the delivery function unit upon the SUS receiving a call originating from a calling party to the SUS, on the SUS'"'"'s subscriber line;

    in response to the first message and in response to the second message, the delivery function unit instructing the end-office switch to forward the respective call to the delivery function unit;

    the delivery function unit forwarding the respective call back to the end-office switch to be connected to the SUS or to the called party; and

    obtaining call content of the respective call using the delivery function unit while the respective call is being forwarded through the delivery function unit.

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