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Method of and apparatus for use in forwarding calls intended for roaming subscriber units

  • US 6,996,396 B1
  • Filed: 12/30/1999
  • Issued: 02/07/2006
  • Est. Priority Date: 12/30/1999
  • Status: Expired due to Fees
First Claim
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1. A method for use in a mobility gateway for forwarding a call directed to a roaming subscriber unit, the method comprising:

  • storing in memory, at the mobility gateway coupled between a GSM network and an ANSI-41 based network, a plurality of temporary transfer-to telephone numbers;

    selecting, for association with the roaming subscriber unit, one of the temporary transfer-to telephone numbers;

    sending a message having the temporary transfer-to telephone number to a mobile switching center serving the roaming subscriber unit;

    after selecting and sending, receiving, and storing information related to a call request for the roaming subscriber unit; and

    after receiving and storing, receiving a location request message from a mobile switching center which homes the temporary transfer-to telephone number.

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