Patent · US Expired

Methods for cellular pay phone/debit phone support on analog channels

US6088584A · kind A · utility

4Cited by
2References
8Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMar 25, 1997
Grant dateJul 11, 2000
Priority date—
Expiry dateMar 25, 2017

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04W88/02
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

A method for providing support for both Authentication and Privacy and sending charge rates to pay phones/debit phones on an analog channel in a communication system using mobile station control messages in a non-standard manner is disclosed. Each control message contains an Order Code, a Qualifier Code, and a Local/Message Type. A first group of combinations of Order Code, Qualifier Code, and Local/Message Type are assigned to Authentication and Privacy. A second group of combinations of Order Code, Qualifier Code and Message Type are assigned to sending the charge rates, wherein the first and second groups are mutually exclusive.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.