Pay-telephone station with deferred collection

Check-actuated control mechanisms – Including noncontacting – relatively movable parts connected...

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194 1N, H04M 1702

Patent

active

041929721

ABSTRACT:
A pay-telephone station equipped to handle local and long-distance calls includes a microcomputer which, at the end of a conversation or under certain conditions during a call, selectively collects predeposited payment items (coins, bills and/or prepayment entries of subscription cards) of different denominations calculated according to the debt incurred and to the denominations available to optimize the refunding of any excess to a user. The microcomputer also determines, upon the start of dialing by a caller, whether the initial deposit suffices for at least the basic charge on the type of connection (local or trunk call) sought to be set up and, if it does not, invites the user to make an additional deposit before aborting the call. The remaining credit balance is continuously signaled to the caller on a display unit and, even before actual collection, is diminished according to the applicable rate in response to each metering pulse arriving from the exchange.

REFERENCES:
patent: 3820642 (1974-06-01), Levasseur
patent: 3841456 (1974-10-01), Levasseur
patent: 4028494 (1977-06-01), Zarouni
patent: 4034839 (1977-07-01), Lee
patent: 4105867 (1978-08-01), Levasseur et al.
"The New Coin Box Set Az 44", Hasler Review vol. 9, No. 2 pp. 51-56, Surmer 1976, A. Nyffenger.

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