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Mobile network having IP multimedia subsystem (IMS) entities and solutions for providing simplification of operations and compatibility between different IMS entities

  • US 20040187021A1
  • Filed: 01/30/2004
  • Published: 09/23/2004
  • Est. Priority Date: 02/10/2003
  • Status: Abandoned Application
First Claim
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1. A Proxy Call State Control Function (P-CSCF) implemented in a mobile network to provide IP multimedia services comprising:

  • storing identification information from a given user equipment (UE) at registration in memory;

    receiving a SIP (Session Initiation Protocol) message from the given UE;

    comparing identity in the SIP message with the identification information stored with a link to a Policy Decision Function (PDF); and

    using the same PDF for all operations of the given UE, when the identity in the SIP messages matches the identification information stored in memory.

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