Data circuit-terminating equipment with power source device

Details Data circuit-terminating equipment with power source device Data circuit-terminating equipment with power source device

1991-05-08

1993-01-19

Dwyer, James L.

Telephonic communications

Telephone line or system combined with diverse electrical...

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

379413, 375 8, H04M 1100

Patent

active

051812401

ABSTRACT:
A data circuit-terminating equipment with a power source device attached thereto comprising a data circuit-terminating device such as a modem system including a power source device for supplying a power extracted from a telephone circuit to the data circuit-terminating device.

REFERENCES:
patent: 4395590 (1983-07-01), Pierce et al.
patent: 4415774 (1983-11-01), Driver
patent: 4578533 (1986-03-01), Pierce
patent: 4593389 (1986-06-01), Wurzburg et al.
patent: 4691344 (1987-09-01), Brown et al.
patent: 4803719 (1989-02-01), Ulrich
Understanding Telephone Electronics Radio Shack 1984, pp. 9-15 to 9-16.
JP-A-58 159 668, Canon, Sep. 22, 1983, Patent Abstract of Japan, vol. 7, No. 280.
IBM Technical Disclosure Bulletin, vol. 28, No. 2, Jul. 1985, pp. 668-669.

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