Patent ID: 6104785
Filing Date: 2000-08-15
Classification: H04M

Abstract:
A security system for a plurality of subscribers, comprising:a) a security device located in each of the plurality of subscribers, each security device comprising:i) a sensing circuit including at least one sensing element to generate a detection signal;ii) an emergency handling/communication circuit including at least one alarm device; andiii) a monitor/control server including a central processing unit connected to the serving circuit to receive generated detection signals and to the emergency handling/communication circuit the central processing unit having a dual tone multi-frequency signal receiver enabling the central processing unit to be connected to a public telecom network in response to a ringing signal transmitted through the public telecom network and to receive a dual tone multi-frequency signal transmitted over the public telecom network, a dialing circuit for performing an automatic dialing operation, and a radio frequency receiver;b) a remotely located administrating and monitoring device connected to each of the monitor/control servers via the public telecom network to selectively communicate with the monitor/central servers; and,c) a remote setting unit communicating with at least one monitor/central servers via radio frequency so as to control the operation of the at least one monitor/control server.