Credit control system for long distance telephone services

Details Credit control system for long distance telephone services Credit control system for long distance telephone services

1989-05-31

1991-11-26

Ng, Jin F.

Telephonic communications

Telephone line or system combined with diverse electrical...

Credit authorization

379144, H04M 1702

Patent

active

050688910

ABSTRACT:
The amount of credit available to a telephone travel card holder is determined immediately at the completion of a long distance call and the travel card is invalidated if no credit remains. Capture software captures call ticket data at the completion of a call and the ticket data is transmitted to a monitoring computer without delay. The monitoring computer calculates the amount of credit available to that caller and invalidates the travel card if no credit remains by transmitting a signal to all switching equipment stations throughout the telephone system.

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patent: 4577061 (1986-03-01), Katzeff et al.
patent: 4611096 (1986-09-01), Asmuth et al.
patent: 4685127 (1987-08-01), Miller et al.
patent: 4706275 (1987-11-01), Kamil
patent: 4782519 (1988-11-01), Patel et al.
patent: 4791640 (1988-12-01), Sand
S. B. Weinstein, "Smart Credit Cards: The Answer to Cashless Shopping", IEEE Spectrum, 2/1984, pp. 43-49.

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