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Method of providing message service for limited access telecommunications

  • US 5,592,537 A
  • Filed: 05/20/1994
  • Issued: 01/07/1997
  • Est. Priority Date: 05/20/1994
  • Status: Expired due to Term
First Claim
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1. A method of operating a telecommunication system for providing a message service to a plurality of end users, which comprises:

  • (a) in a telecommunication system having telecommunication lines with a telecommunication switching network and a computerized central switching station, establishing a billing system for sponsors and forming an account for each sponsor purchasing subsequent usage relating to one or more third party telephone numbers, said usage being based on a predetermined bulk rate for consumption of user telecommunication time over a preset time period;

    (b) distributing a user unit to each user of a subset of said end users for providing to each of said end users for said subset said one third party telephone number and at least one personal identification number, said at least one personal identification number being unique to each said user unit;

    (c) in said billing system, programming said computerized central switching station to permit a call of a preset message limit to be made by each of said end users of said subset to said one third party telephone number only upon receipt of said unique personal identification number; and

    ,(d) in response to one of said end users of said subset calling said one third party telephone number, providing a predetermined message to said one of said end users of said subset in accordance with said preset message limit, automatically terminating the call of said one of said end users of said subset, and charging an appropriate amount to said account of said sponsor.

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