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System and method for providing interoperable and on-demand telecommunications service

  • US 20050084081A1
  • Filed: 09/03/2004
  • Published: 04/21/2005
  • Est. Priority Date: 08/31/2001
  • Status: Active Grant
First Claim
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1. A method of operating a telecommunications system, the method comprising the steps of:

  • detecting an incoming call or data message from a calling party to a called party; and

    using a called number or identifier to determine whether the called party is a user for whom service is provided at no charge or substantially no charge.

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