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Extra communication service system with time differential corrected

  • US 6,704,570 B2
  • Filed: 08/24/1999
  • Issued: 03/09/2004
  • Est. Priority Date: 10/30/1998
  • Status: Expired due to Fees
First Claim
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1. An extra communication service system with a time corrected by a time differential, for providing an extra service corresponding to a set time between communication networks using different standard times, comprising:

  • means for determining the time differential with a destination communication network of a subscriber based on communication ID number information exchanged between a home communication network of the subscriber who has registered the extra service and the destination communication network of the subscriber in response to a request for a location registration for the home communication network of the subscriber when the subscriber moves to a different service area;

    means for producing and holding a time table based on a standard time of the destination communication network corrected based on a time differential with the destination communication network from a time set in an extra service time table in subscriber data stored in a home location register of the home communication network; and

    means for changing the time table of the standard time of the destination communication network in accordance with a request from the destination communication network to change the time table;

    wherein the extra service corresponding to the set time is provided according to the time table of the standard time of the destination communication network.

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