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SYSTEM AND METHOD FOR REDUCING LATENCY IN CALL SETUP AND TEARDOWN

  • US 20090141625A1
  • Filed: 07/07/2008
  • Published: 06/04/2009
  • Est. Priority Date: 07/05/2007
  • Status: Active Grant
First Claim
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1. A network device providing integrated functionality comprising:

  • a policy charging and enforcement point (PCEF) residing in the network device that manages packet flows through the network device using policies;

    a call session control function (CSCF) residing in the network device that handles call session setup and teardown and analyzes requested media parameters against policy information; and

    a policy agent residing in the CSCF that stores in a computer readable medium policy information about a subscriber, wherein the network device receives policy information from a policy and charging rules function (PCRF) for use locally with the policy agent.

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