Telephonic communications – Emergency or alarm communications – Responsive to sensed nonsystem condition
Patent
1995-04-28
1997-01-28
Chan, Jason
Telephonic communications
Emergency or alarm communications
Responsive to sensed nonsystem condition
379 43, 379 44, 379 47, 379 49, H04M 1104
Patent
active
055984568
ABSTRACT:
An integrated telephone, intercom, security and control system for a building having a plurality of units, utilizing a plurality of telephone lines located throughout the building which are connected at one end to telecommunications equipment located in the units and throughout common areas of the building. A digital switching device is connected to the other end each of the telephone lines and arranged to connect at least one of the telephone lines to at least one of another of the telephone lines or to an outside telephone line at the option of a user of the telecommunications equipment. A plurality of sensors located in the units and throughout common areas of the building are arranged for generating signals in response to conditions therein, which are then transmitted to a plurality of control modules connected to the digital switching device by at least one of the telephone lines. The control modules are further adapted to send information to a central monitoring station via the telephone lines indicative of the respective conditions and the central monitoring station is adapted to at least receive and store this information in its memory and output data indicative of the respective conditions.
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