System for remotely monitoring a single- or multi-function insta

Details System for remotely monitoring a single- or multi-function insta System for remotely monitoring a single- or multi-function insta

1989-03-16

1990-11-27

Ng, Jin F.

Telephonic communications

Telephone line or system combined with diverse electrical...

Remote indication over telephone line

379 96, 379102, 379104, 379105, H04M 1100

Patent

active

049742558

ABSTRACT:
A remote monitoring system for remotely monitoring, by telephone, at least one apparatus of an installation (1), acting through a telephone network (2) having lines to which the installation and at least one distant terminal device (3) are connected for remote monitoring purposes, the system being characterized in that it comprises, local to the installation, a premises controller (4) organized about a microprocessor control circuit (18) and connected firstly to units (23, 24 25) of the apparatus to be monitored in the installation, and secondly to a directory terminal (5) of a type suitable for automatically detecting and dialing telephone calls (12, 13) in order to be put into communication with the terminal device (3) through the telephone network, said terminal device being compatible with the selected directory terminal (5) so as to enable them to be put into communication with each other manually and/or automatically from either end via the telephone lines (L1, L2) respectively connecting the terminal device (3) and the directory terminal (5) to the telephone network.

REFERENCES:
patent: 4598286 (1986-07-01), Miller et al.
patent: 4766548 (1988-08-01), Cedrone et al.
patent: 4829560 (1989-05-01), Evanyk et al.
patent: 4847894 (1989-07-01), Chanvin et al.

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