Communications: electrical – Condition responsive indicating system – With particular coupling link
Reexamination Certificate
2007-07-24
2007-07-24
Mullen, Thomas (Department: 2636)
Communications: electrical
Condition responsive indicating system
With particular coupling link
C340S691800, C340S526000, C340S539230, C379S399010, C379S093010, C379S192000
Reexamination Certificate
active
09845712
ABSTRACT:
In one aspect, a phone-interface device determines whether a problem has occurred at a control panel by determining whether a signal from the control panel has been received, and when a signal has not been received within a period of time, the phone-interface device transmits an error message to a monitoring station. In another aspect, the control panel determines whether a problem has occurred at the phone-interface device by determining whether a signal from the phone-interface device has been received, and when a signal has not been received within a period of time, the control panel transmits an error message to a user. In another aspect, the phone-interface device contains memory to buffer data transferred between the control panel and a monitoring station. In this way, a high-speed connection between the phone-interface and the monitoring station can be accommodated while using a lower-speed connection between the phone-interface device and the control panel.
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Bergman John Todd
Hasselfeldt Kurt
Lee Thomas Anthony
Lofstad Eric W.
Seemann Brian Karl
Interactive Technologies Inc.
Mullen Thomas
Previl Daniel
Schwegman Lundberg Woessner & Kluth P.A.
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