Telephone communication apparatus and method having automatic se

Details Telephone communication apparatus and method having automatic se Telephone communication apparatus and method having automatic se

1989-03-03

1990-05-15

George, Keith E.

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

379444, H04M 1100

Patent

active

049264648

ABSTRACT:
A telephone communication apparatus for receiving data from a telephone network in either of two modes, i.e., an acoustic mode and an electromagnetic mode, and for automatically selecting the particular mode that provides fewer data errors.

REFERENCES:
patent: 2530621 (1950-11-01), Lybarger
patent: 3396245 (1968-08-01), Flygstad
patent: 3764746 (1973-10-01), Libby
patent: 3875335 (1975-04-01), Kennedy
patent: 4490585 (1984-12-01), Tanaka
patent: 4524244 (1985-06-01), Faggin et al.
patent: 4697283 (1987-09-01), La France et al.

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