Tyco Safety Products Canada Ltd.

Pavel Raikhlin

Stephane Foisy

Derek Carl Smith

Joshua Gregory Hutchison

Techniques for decoding communications transmitted by a remote alarm panel over a communications network to a central monitoring station (CMS) are provided. A first signal from the remote alarm panel can be received by the CMS. The CMS can determine that the first signal cannot be decoded due to errors, missing data, or corrupted data in the first signal. The remote alarm panel can retransmit the signal. The CMS can analyze the first and second signals to determine if the first signal can be reconstructed based on information provided by the second signal. The first signal can subsequently be repaired and decoded, allowing the CMS to more quickly respond to the alarm condition provided in the first signal.

Signal reconstruction using recursive data and signal recovery using previous known signals

A method and security system arrangement are disclosed for processing incoming signals at an alarm monitoring station. The method includes analyzing the incoming signals to assess if any particular incoming signal includes characteristics of a facsimile signal to thereby identify whether or not a given incoming signal is a facsimile signal. If the analyzing identifies that a given incoming signal includes characteristics of a facsimile signal, thus identifying that the given incoming signal is likely a facsimile signal, the alarm monitoring station refrains from initiating an alarm handling procedure to handle the given incoming signal. Caller ID information may be extracted from the facsimile signals received by the alarm monitoring station, and added to a call block list. Calls originating from caller IDs on the call block list may be blocked by the alarm monitoring station.

Facsimile aware alarm monitoring station and method

A method at an alarm monitoring station and security system arrangement for detecting alarm signals originating at security systems on incoming calls carried by a telecommunications line includes, for each call, measuring a noise level on the line in the absence of signals originated by the security systems. Based on the measuring, at least one signal detection threshold above the noise level is set, wherein a level of a signal must exceed the signal detection threshold in order to be detected as a data signal. Alarm data signals in the call are detected using the signal detection threshold.

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Thornhill, Canada

Pavel Raikhlin