Public telephone set with internal charge processing

Details Public telephone set with internal charge processing Public telephone set with internal charge processing

1986-03-06

1988-08-30

Lev, Robert

Telephonic communications

With check operated control

379155, 379 36, H01B 502

Patent

active

047682230

ABSTRACT:
A public telephone set that processes call charge information is provided. The set includes a register for holding a pre-determined number of digits of the dialed number and a memory in which dial control codes corresponding to the predetermined number of digits are stored in advance. Depending upon the telephone number that is dialed, a memory location is directly addressed to obtain a control code. The control code specifies a memory location in which charging information such as a charge or time increment is stored. This information is then processed to determine the appropriate charge for the number dialed.

REFERENCES:
patent: 3329779 (1967-07-01), Clark, Jr.
patent: 3519745 (1970-07-01), Colman
patent: 3937893 (1976-02-01), Muller et al.
patent: 4122308 (1978-10-01), Weinberger et al.
patent: 4198545 (1980-04-01), Haist et al.
patent: 4595983 (1986-06-01), Gehalo et al.
patent: 4644109 (1987-02-01), Takeda et al.
Scanlon, IBM PC & XT Assembly Language, 1983 (Robert J. Brady Co., Bowie, MD 20715), pp. 87-88, 96,189-192.

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