Telecommunication apparatus serving as an interface between a di

Details Telecommunication apparatus serving as an interface between a di Telecommunication apparatus serving as an interface between a di

1983-08-05

1986-03-25

George, Keith E.

H04M 1100

Patent

active

045785376

ABSTRACT:
The present invention relates to an interface apparatus between a digital computer and an analog communication medium. The interface apparatus has a telephony apparatus for transmitting or receiving the voice signals and a modem for transmitting or receiving the data signals. A switch is interposed between the telephone line and the modem and the telephony apparatus. The switch can be alternatively switched such that the telephony apparatus is connected to the telephone lines and transmits and receives voice signals and the modem is connected to receive data carrier signals that precede digital data signals and follow the digital data signals to and from the medium, or in the second position wherein the modem is connected to transmit and to receive digital data signals. The interface apparatus further has an interrupt for interrupting the operation of the computer and for causing the computer to be in communication with the modem and for switching the switch to connect the modem with the medium.

REFERENCES:
patent: 4488002 (1984-12-01), Seibel
patent: 4489438 (1984-12-01), Hughes
patent: 4524244 (1985-06-01), Faggin et al.
Georgopulos et al, "PACET-A Programmable Attendant/Agent Console and Electronics Telephone, " GTE Automatic Electric Journal, Nov. 1980, p. 194-203.
BIZCOMP, Brochure: "There is Only One PC/XT Modem Designed to Let Both You and Your Computer Talk on the Same Line," Modem Introduced in 1983.
Branko Soucek, Minicomputers in Data Processing and Simulation, John Wiley & Sons, New York, 1972.
American Telephone & Telegraph Co., Bell Sytems Data Communications Technical Reference, Data Set 202E Series, Mar. 1968.

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