Telephone card and telephone card-operated telephone

Details Telephone card and telephone card-operated telephone Telephone card and telephone card-operated telephone

1988-06-27

1989-09-19

Dwyer, James L.

Telephonic communications

Supervisory or control line signaling

Substation originated

379355, H04M 1276

Patent

active

048688495

ABSTRACT:
A telephone card includes a remaining call number recording area for recording a number of remaining calls which can be made using the card, and a telephone number storage area for storing a telephone number of a party to be called using the card. The card is inserted into a telephone set to automatically call a telephone set corresponding to the telephone number stored in the telephone number storage area. A telephone set capable of using this telephone card includes a reader for reading information stored on the card, a dialing unit for extracting telephone number information, which is indicative of a telephone number of a party to be called, contained in the read information, and for producing a telephone number signal corresponding to the extracted telephone number and transmitting the telephone number signal on a connecting line, a counter for counting a number of calls made using the card, and a writing unit for subtracting the counted number of calls from a remaining number of calls read in from the card at the end of a call, and for writing the result in the remaining call number storage area of the card. By inserting the card in the telephone set, the party whose phone number is recorded on the card is called automatically.

REFERENCES:
patent: 3870830 (1975-03-01), Tapiei

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