Telephone equipment for reduced key operations

Details Telephone equipment for reduced key operations Telephone equipment for reduced key operations

1985-09-27

1988-04-05

Levy, Stewart J.

Telephonic communications

Supervisory or control line signaling

Substation originated

379 58, 379 63, H04M 1274

Patent

active

047364106

ABSTRACT:
A microprocessor-based telephone set includes a telephone number memory, a number indicator, an abbreviated number scanning switch and associated control circuit, in addition to a push-button dial and a hook switch as equipped in the usual telephone set. Telephone numbers are preset in correspondence to abbreviated numbers, so that a telephone number is dialed automatically by simply specifying a corresponding abbreviated number using the scanning switch and indicator. By provision of an FM transceiver within the handset and a separate relay unit for establishing radio communication with the base telephone station, a mobile telephone system is configured.

REFERENCES:
patent: D254435 (1980-03-01), Ferron
patent: 3824465 (1974-07-01), Blough
patent: 4266102 (1981-05-01), Stanley et al.
patent: 4455454 (1984-06-01), Umebayashi
patent: 4481382 (1984-11-01), Villa-Real
patent: 4581490 (1986-04-01), Genender
National Technical Report, vol. 23, No. 5 (Oct., 1977), "Mobile Radio-Telephone System for Bahrain", T. Kawada, H. Shiomi, M. Yamato, N. Morita.
Detachable Mobile Radio Units for the 800 MHz Land Modile Radio System, K. Kobayashi, et al., IEEE Conference on Vehicular Technology, May, 1984, pp. 6-11.
27th Annual Conference IEEE Vehicular Technology Group (U.S.A.), Mar. 16-17, 1977, pp. 168-172, "An Improved Mobile Telephone Control Unit", Kahn.

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