Circuit switching system

Details Circuit switching system Circuit switching system

1990-01-19

1992-02-25

Dwyer, James L.

Telephonic communications

Telephone line or system combined with diverse electrical...

To produce visual-graphic copy

379105, 358434, 358439, H04M 1100

Patent

active

050919326

ABSTRACT:
A circuit switching system for switching a circuit from a telephone to a facsimile. Circuit switching is performed by a signal, designating circuit switching delivered to the circuit. The circuit is monitored. When a signal designating circuit switching is detected from the circuit, the circuit is switched automatically from the telephone to the facsimile and a starting signal is applied to the facsimile.

REFERENCES:
patent: 4584434 (1986-04-01), Hashimoto
patent: 4658417 (1987-04-01), Hashimoto
patent: 4660218 (1987-04-01), Hashimoto
patent: 4663778 (1987-05-01), Takahashi
patent: 4794637 (1988-12-01), Hashimoto
patent: 4901343 (1990-02-01), Yamaguchi
Teleconnect, November 1987, Protel's Proswitch, p. 209, 379-393.

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