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Transfer-to c-number message triggering of a routing request message within a cellular telephone network

  • US 5,711,002 A
  • Filed: 05/14/1996
  • Issued: 01/20/1998
  • Est. Priority Date: 05/14/1996
  • Status: Expired due to Term
First Claim
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1. In a cellular telephone network including a present switching node handling a call dialed to a B-number, a home location register storing transfer-to C-numbers for the dialed B-number, and a serving switching node serving a certain one of the C-numbers, a method for effectuating a call transfer set-up for the call, comprising the steps of:

  • responsive to a redirection initiator for the call, transmitting a transfer-to C-number request from the present switching node to the home location register, the transfer-to C-number request including the B-number and an identification number for the present switching node;

    processing in the home location register of the B-number to retrieve the certain C-number;

    processing in the home location register of the certain C-number, without having previously returned the C-number to the present switching node no determine the serving switching node; and

    transmitting a routing request from the home location register co the serving switching node to pro-route the call for transfer to the C-number, the routing requesting including the identification number for the present switching node as provided in the transfer-to C-number request.

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