Remote monitoring apparatus

Details Remote monitoring apparatus Remote monitoring apparatus

1985-09-06

1987-06-23

Schreyer, Stafford D.

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Testing of subscriber loop or terminal

379 1, 324 65R, 340517, 340653, H04M 328

Patent

active

046758968

ABSTRACT:
A determination of the extent and location of malfunctions in electrical equipment is made by providing monitoring apparatus at the equipment which includes a resistance network that provides a different resistance each time a switch changes state and an output corresponding to that change that can be monitored from a remote location. The remote monitor disclosed is a programmed computer with a modem coupled to the monitoring apparatus by phone lines and also coupled to an output device by phone lines whereby the computer can readily transmit malfunction information to the output device at various maintenance center locations.

REFERENCES:
patent: 3105882 (1963-10-01), Meyer
patent: 3105883 (1963-10-01), Higson, Jr.
patent: 3259892 (1966-04-01), Winckelmann
patent: 3268867 (1966-08-01), Pickett et al.
patent: 3444336 (1969-04-01), Holt et al.
patent: 4310835 (1982-01-01), Sefton
patent: 4491828 (1985-01-01), Galvin et al.

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