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System and method for distributed call monitoring/recording using the session initiation protocol (SIP)

  • US 8,300,632 B2
  • Filed: 09/16/2008
  • Issued: 10/30/2012
  • Est. Priority Date: 02/21/2008
  • Status: Active Grant
First Claim
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1. A system for remote call monitoring of a call set up between a first Session Initiation Protocol (SIP) device and a second SIP device comprising:

  • a. a monitor adapted to receive a first media stream from the first SIP device and/or a second media stream from the second SIP device;

    b. a controller adapted to derive information from at least both a first SIP INVITE message from the first SIP device and a response message from the second SIP device to generate one or more additional SIP INVITE messages, wherein the response message comprises a SIP OK message sent in response to the first SIP INVITE message; and

    c. wherein the monitor is adapted to receive the first media stream and/or the second media stream in response to receipt of the one or more additional SIP INVITE messages.

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