Alarm and emergency call system

Details Alarm and emergency call system Alarm and emergency call system

1997-06-18

2000-02-29

Trost, William G.

Telecommunications

Radiotelephone system

Emergency or alarm communication

379 40, 340539, H04Q 720

Patent

active

060320362

ABSTRACT:
The alarm and emergency call system having a plurality of local units installed at the users and connected by a telephone line to a central unit having the same design. Each local unit is in radio connection with alarm transmitters and has a control member with an electronic circuit contained in a case, a keypad, and a display unit. Following an alarm signal sent by one of the transmitters, the local unit in question calls different telephone destinations and/or pagers according to a determined cycle. The different function parameters of each local unit are stored in its control member. These function parameters can be entered, adapted or modified remotely from the central unit according to a remote management procedure.

REFERENCES:
patent: 4855713 (1989-08-01), Brunius
patent: 5305370 (1994-04-01), Kearns et al.
patent: 5319698 (1994-06-01), Glidewell et al.
patent: 5438607 (1995-08-01), Przygoda et al.
patent: 5517547 (1996-05-01), Ladha et al.
patent: 5594782 (1997-01-01), Zicker et al.
patent: 5692215 (1997-11-01), Kutzik et al.
patent: 5745849 (1998-04-01), Britton
patent: 5797091 (1998-08-01), Clise et al.

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