Pre-paid cellular telephone system

Details Pre-paid cellular telephone system Pre-paid cellular telephone system

1995-12-08

1998-07-07

Bost, Dwayne D.

Telecommunications

Radiotelephone system

Usage measurement

455408, 455409, 379114, 379127, 379144, H04Q 700, H04Q 738

Patent

active

057783136

ABSTRACT:
A pre-pay service unit uses pseudo-numbers to identify subscribers and substitutes actual numbers to complete a call after verification of authenticity and verification of a positive balance in a subscriber's account. The service unit and the cellular telephone exchange data in the process of authentication. For outgoing calls, a cellular telephone first transmits an "800" number and an ANI. The "800" number is the telephone number of the pre-pay service unit, which then requests number actually dialed. The cellular telephone responds with dialed digits, a security code, and status data. If the information is correct, the dialed digits are then passed to a local exchange carrier to complete the call. For incoming calls, a pseudo-number directs the call to the pre-pay service unit, which converts the pseudo-number to the actual telephone number of a subscriber's cellular telephone.

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patent: 5722067 (1998-02-01), Fougnies et al.

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