Telephone dialing arrangement for calling a single party

Details Telephone dialing arrangement for calling a single party Telephone dialing arrangement for calling a single party

1975-04-29

1977-06-28

Brown, Thomas W.

179 90B, H04M 1272

Patent

active

040327221

ABSTRACT:
Apparatus including a telephone instrument for connection to a public telephone system has provision for a call connection to be set up through the system to just a single party upon operation of a single push-button. A plurality of electric switches are preset (usually prior to installation of the instrument) to characterize the directory number of the party that can be called. Upon operation of the push-button, electronic circuitry scans the switches characterizing the directory number to cause the decimal digits of that number to be written sequentially into storage circuitry which subsequently generates a train of impulses in respect of each such digit for transmission to line. There is provision for the scanning operation to be halted for a predetermined period after some of the digits have been written into the storage circuitry.

REFERENCES:
patent: 3692962 (1972-09-01), Raczynski et al.
patent: 3790721 (1974-02-01), Muhlbauer et al.
patent: 3856982 (1974-12-01), Lawson et al.
patent: 3860765 (1975-01-01), McCabe et al.
patent: 3872467 (1975-03-01), Daniels et al.

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