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Provision of IMS services via circuit-switched access

  • US 9,614,876 B2
  • Filed: 10/21/2005
  • Issued: 04/04/2017
  • Est. Priority Date: 10/21/2005
  • Status: Active Grant
First Claim
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1. An Access Gateway Node (MAGCF) for providing access to an IP multimedia system for a circuit-switched controlled user'"'"'s terminal located in a circuit-switched controlled domain, wherein said node comprises:

  • a circuit-switched function configured to provide exchange signaling for a circuit-switched controlled user'"'"'s terminal, wherein said circuit-switched function is configured to interact with a home register located in a home circuit-switched controlled domain to obtain from the home register, a user'"'"'s IP multimedia system parameter, the user'"'"'s IP multimedia system parameter being an indication that a subscription of the circuit-switched controlled user'"'"'s terminal has been ported to the IP multimedia system;

    a user agent configured to utilize the user'"'"'s IP multimedia system parameter to register the circuit-switched controlled user'"'"'s terminal to the IP multimedia system on behalf of the circuit-switched controlled user'"'"'s terminal, wherein the user agent registers the circuit-switched controlled user'"'"'s terminal to the IP multimedia system without further signaling with the circuit-switched controlled user'"'"'s terminal; and

    an exchange interface configured to exchange signaling between the user agent and the circuit-switched function.

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