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Method and apparatus for identifying a subscriber home domain in a communication network

  • US 9,060,035 B2
  • Filed: 08/19/2011
  • Issued: 06/16/2015
  • Est. Priority Date: 08/19/2011
  • Status: Active Grant
First Claim
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1. A method for determining a called party home domain comprising:

  • partitioning a national subscriber profile covering a geographic area into a plurality of regions, each of the plurality of regions designated as internet multimedia subsystem serving area;

    receiving a request, at a network component, from a calling party to establish communication with a called party of a plurality of parties, each of the plurality of parties associated with a respective internet multimedia subsystem serving area;

    determining a name authority pointer associated with the called party by querying a local copy of a telephone numbering database in a home domain of the calling party based on the request, the name authority pointer comprising data identifying the called party home domain and a region of the plurality of regions of the national subscriber profile in which the called party is located;

    determining a domain name of a device located in the called party home domain identified in the name authority pointer;

    determining an internet protocol address of the device located in the called party home domain identified in the name authority pointer based on the domain name; and

    transmitting a request to the called party home domain based on the internet protocol address of the device located in the called party home domain.

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