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Number portability in a communications system

DC CAFC
  • US 6,639,912 B1
  • Filed: 02/15/2002
  • Issued: 10/28/2003
  • Est. Priority Date: 11/22/1996
  • Status: Expired due to Term
First Claim
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1. A method for operating a communications system, the method comprising:

  • receiving a call setup message including a called number into a signaling processor;

    processing the called number in the signaling processor to transmit a query;

    receiving a response message responsive to the query that includes number portability information for the called number;

    processing the number portability information to select an identifier for routing;

    transmitting a control message that indicates the identifier;

    receiving a Time Division Multiplex (TDM) user communication and the control message into an interworking system;

    converting the TDM user communication into packet communications that include the identifier for routing; and

    transferring the packet communications that include the identifier for routing.

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