Abstract: Disclosed herein are two embodiments of an alarm and security system. The first is a stand alone alarm and security system which includes a control panel and at least one transceiver for sending and receiving a control signal and a base station. The control panel receives information about one or more desired conditions in one or more geographical areas and transmits the information to a base station via the transceiver. The base station receives the information from the control panel and transmits the appropriate control signals to the control panel. The second embodiment includes a communications panel including first transceiver for receiving information about one or more desired conditions in one or more geographical areas and for receiving a control signal and for transmitting the desired condition information and a control signal to a base station. Either embodiment accepts information from an existing panel via telephone line and transfers a full data message to the base station.

Abstract: A system for interfacing an alarm reporting unit with a cellular radio transceiver so that the data which is produced by the alarm reporting unit is effectively matched to the radio transceiver, irrespective of its initial format, includes circuitry for matching the format of the alarm reporting unit to that of the cellular radio transceiver, and circuitry for matching the format of the cellular radio transceiver to that of the alarm reporting unit, to permit interactive communications which assure the reliable transmission of data while allowing suitable acknowledgement signals to be returned to the alarm reporting unit to regulate the effective transmission of data within the system, and isolation circuitry to effectively separate the alarm reporting unit from the cellular radio transceiver so that the alarm reporting unit can communicate with a monitoring facility via the cellular radio transceiver, as well as the wired telephone network.

Abstract: A personal emergency response system (PERS) is disclosed which includes a method and apparatus for monitoring alarm signals to provide improved emergency response capabilities and enhanced system operability. The system includes a local response center for relaying alarm signals received from subscribers to mobile on-site field personnel via individual paging units. The system is also capable of retransmitting an alarm signal in the event that a response to the original alarm signal has not been registered within a predetermined period of time. The system is also provided with redundant communications paths to minimize the possibility of a missed alarm message from a subscriber, and self-test capabilities for detecting system faults and transmitting fault messages to the individual paging units of the system.

Abstract: The present invention is concerned with a device for observing from a distance the change of mode in feed current by city current of an electrical appliance by means of a telephone line characterized in that it comprises: means for detecting the presence or the absence of city current to the feed terminals of the electrical appliance, control means, triggered by the detecting means when there occurs a change of mode in the feed of said electrical appliance, switch means, capable of placing the telephone line either in a first free position or in a second engaged position, the control means acting upon the switch means to reverse the position of the telephone line when the detecting means detect a change of mode in the feed of said electrical appliance by city current. (FIG. 1).

Abstract: A data transmission network uses a cellular network as a primary telecommunications link and a backup telecommunications link. The system continuously monitors the links and switches to the back up link if the cellular link is not operative. A software package is included in the computer at a monitoring station for effecting integrity checks of the links, and RF fault modules are also included.

Abstract: An apparatus and method for use in combination with a personal emergency response system. Typical systems establish a telephone communication link between a subscriber station and a central monitoring station in order to monitor the needs of elderly and/or infirm persons confined to their residences. In the normal operation of a system, a user located at a subscriber station activates a subscriber unit which transmits an alert signal via a telephone communication link to a central monitoring station which dispatches aid to the subscriber station. The system of the present invention incorporates an ancillary radio frequency receiver or transceiver subsystem as an alternate communication link in the event that telephone service becomes disabled. The ancillary radio receiver provides the user with the ability to receive radio frequency transmissions which inform the user that telephone lines have become disabled.

Abstract: An alarm system suitable for use in a telecommunications network in which a central switching system is capable of selectively providing a signal of a predetermined polarity to a plurality of remotely located stations without being dependent upon or impeding the ability of the central switching system to process relatively high volume communications traffic. Each of the remote stations is connected to the telecommunications network by an electrical conduction path. The stations are substantially unresponsive to the predetermined polarity signal. In response to an alarm indication signal, the system effects a reversal in the polarity of the signal provided to a selected subset of the remote stations. Each station in the selected subset responds to the polarity reversal by indicating an alarm condition.

Abstract: An alarm reporting system includes a control unit which services a supervised derived channel communicator, and a one-way radio communicator (preferably via the cellular telephone network), to provide for interactive operation of the derived channel unit and the radio transmitter according to alarm conditions which may arise at the premises, and the existing condition of the equipment comprising the system. The system is capable of communicating with a central monitoring facility, or mobile units (patrol vehicles or service vehicles) associated with the central monitoring facility, for enhanced security of the monitored premises.

Abstract: An alarm system for a protected premises includes an alarm sensor for generating an alarm signal in the event of an alarm condition. A cellular-type radio/telephone transceiver is located at the protected premises and includes circuitry for generating and transmitting a unique identification number of the transceiver and a send signal for wireless communication with a cellular site. Structure is provided for connecting the alarm signal line to the cellular-type radio/transceiver such that upon receipt of the alarm signal, the cellular-type radio/transceiver will transmit the unique identification number and the send signal to the cellular site with no transmission of the telephone number of an alarm monitoring station to thereby enable the cellular site to transmit the alarm condition to the alarm monitoring station.

Abstract: Transient signal elimination circuitry is disposed in a local communications loop extending from a subscriber telephone to a telephone central office couples ringing and on-hook and off-hook signals through the loop after removing transients in these signals. The circuitry also isolates the telephone subscriber and central office from the local loop until an off-hook signal is detected and restores this isolation when an on-hook condition exists at the telephone subscriber. Transient signal elimination is accomplished with a CPU driven interface which detects undesirable transients such as a ringing or off-hook signal, and in response thereto generates a burst of double tone signal to alert connected equipment. In this manner, the local loop can be simultaneously used for both voice communications and a second information signal with each signal capable of occupying the same bandwidth. These signals can operate independently of each other.

Abstract: Disclosed is a system that can monitor occupied or unoccupied buildings, and annuciate to a distant point, e.g. a digital pocket paper, emergency events such as burglaries, fires, high or low temperature, high or low flow rate in such devices as boilers and many more. The system has a circuit that makes interfacing with most commercial field detectors especially easy, and a circuit that enables the system to easily access telephone lines, so as to transmit annunciation messages.

Abstract: A pressure transducer includes a multiplexer unit for the selection of pressure sensors by decoding a sensor address, thereby permitting a single power supply, a single counter and a single clock generator to be used, in order to enable and transmit the measurements of a plurality of pressure sensors connected to a plurality of gas-filled cables.

Abstract: Transient signal elimination circuitry is disposed in a local communications loop extending from a subscriber telephone to a telephone central office couples ringing and on-hook and off-hook signals through the loop after removing transients in these signals. The circuitry also isolates the telephone subscriber and central office from the local loop until and off-hook signal is detected and restores this isolation when an on-hook condition exits at the telephone subscriber. In this manner, the local loop can be simultaneously used for both voice communications and a second information signal with each signal capable of occupying the same bandwidth. These signals can operate independently of each other.

Abstract: A supervised, interactive alarm reporting system includes a local terminal comprised of a supervised derived channel communicator, and a one-way radio communicator (preferably via the cellular telephone network), which are connected by a control unit which provides for interactive operation of the derived channel unit and the radio transmitter according to alarm conditions which may arise at the premises, and the existing condition of the equipment comprising the local terminal unit. The local terminal unit is capable of communicating with a central monitoring facility, or mobile units (patrol vehicles or service vehicles) associated with the central monitoring facility, for enhanced security of the monitored premises. Also an alarm reporting system for a mobile site including a local terminal which communicates with a monitoring facility (fixed or mobile) via the cellular telephone network.

Abstract: A central control unit (scanner) is connected across a set of subscriber loops. At each subscriber's premises, an individual subscriber terminal unit (STU) is connected across that particular subscriber's loop. To each STU are connected the various instrumentalities which are to be monitored by the system, e.g. fire alarms, burglar alarms, etc. FSK modulated signals in the upper part of the audible range are transmitted from the scanner to the STUs at appropriate times. The STUs reply by means of similar signals to indicate the status (e.g. alarm, or non-alarm) of the instrumentalities at the respective subscriber premises. This transmission and retransmission is interrupted when the subscriber's telephone is off-hook. In addition, a signal below the audible range (low tone) is produced at the STU, and transmitted to the scanner over the telephone loop when all the instrumentalities at the particular subscriber premises are in a given state (e.g. non-alarm).

Abstract: A remote unit monitoring system is provided which monitors any number of hazard conditions in an electrical substation and transmits this information via telephone lines and radio link to a central station. The system automatically dials the central station, after checking the integrity of each communications channel. Data is transferred only after a kissoff signal is received from the central station indicating that the communication channel is secure. The substation continues transmitting the data until the data accuracy is verified by the central station. Battery backup of all critical circuits is provided as well as visual indications of any failure in the system. The central station is provided with the ability to query the substation at any time.

Abstract: Apparatus for connecting in series a plurality of communication line pairs, typically direct connected security loops used by alarm companies for monitoring customer's facilities. A bridge with pairs of bridge terminals and switches for connecting bridge terminal pairs to communication line pairs or to terminating lines. Local and remote control for the switches and control apparatus which permits service personnel to selectively terminate a bridge terminal pair with a direct or zero resistance connection line and leave a subscriber's communication line open, for maintaining service for other communication lines connected to the bridge while performing maintenance on the disconnected line. The apparatus is suitable for bridges with various numbers of terminals, such as six way, eight way and twelve way.

Abstract: The invention concerns a remote security and operating system. A user can dial remote systems for spot checks of system sensors, or different systems can dial the user on fault detection. Once the user is connected with the system, the user enters a code and command signals. For instance, a set of normally open sensor switches can be shut down, while a set of normally closed switches are monitored. Each system identifies itself to the user by a series of tonal bursts. The user, by pressing a telephone push-botton, can enter a new telephone number the system will call on fault detection. A set of remote microphones can be activated, their audio signals being fed to the user, through nulling amplifiers which the system would otherwise try to interpret. A tonal OK circuit signal is sent to the user upon testing if the system is working, followed by a different tone if a selected sensor switch detects a fault.

Abstract: Balancing of loading of cells in a cellular mobile radio telephone system is performed by periodically determining the channel utilization of each cell, computing a representative voice channel occupancy level, and attempting to hand-off calls from cells with higher voice channels occupancy levels to adjacent cells with lower voice channel occupancy levels. Voice channel occupancy levels of cells are measured and compared with threshold values, and the results of the comparisons are used to direct cells to enter predetermined states. In one state, complete cell blockage is prevented by directing cells to hand-off calls to adjacent cells. In another state, voice channels are preserved for incoming hand-offs by directing the cell to deny access to mobile transceivers initiating new calls. Cells may assume a combined stage wherein both of these functions are performed simultaneously.