Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7277435 | Method for carrying out monitoring in packet-oriented telecommunication and data networks The invention relates to a method for carrying out monitoring in packet-oriented telecommunication networks and data networks. The method makes it possible to reduce the processor performance required to carry out legal monitoring of telecommunication subscribers in... | 10/02/2007 |
| 7035380 | Line sharing multipoint POTS splitter with intelligent termination The present invention provides for a system and method for blocking leakage signals and uncoupling connections in a communication system. A leakage signal (LS) blocking splitter employs a high-pass filter which effectively blocks the lower frequency leakage signal. ... | 04/25/2006 |
| 6914968 | Method and apparatus for telephone call fraud detection and prevention The present disclosure discloses a method and apparatus for detecting and preventing telephone call fraud. The call fraud detector apparatus is connected to the telephone line, and includes a telephone line interface with switch hook. A parallel set detector indicat... | 07/05/2005 |
| 6839323 | Method of monitoring calls in an internet protocol (IP)-based network A method of monitoring a call with a mobile terminal (MT) in an Internet Protocol (IP)-based network having a Gatekeeper that controls the network, a plurality of access routers that provide access to the network, and a Monitoring Station having monitoring facilitie... | 01/04/2005 |
| 6823185 | Systems and methods for performing authorized intercept in a satellite-based communications system Authorized intercepts of communications in a satellite communications system (10) are performed, according to which a law enforcement agency (LEA) can request the intercept of communications to and/or from subscriber units (SUs). In one embodiment, an LEA int... | 11/23/2004 |
| 6785515 | Method and system for tapping telephone conversations A method and a system for monitoring telephone calls are described. A useful signal (which represents the call information of a telephone call) and a data set (which contains at least one digital subscriber tag) are supplied to a recording center (20). The da... | 08/31/2004 |
| 6775355 | Line sharing multipoint POTS splitter masking noise The eavesdropping prevention system and method of the present invention provides a mask signal generator which generates a mask signal superimposed over a leakage signal. The mask signal prevents meaningful detection and amplification of the leakage signal. The ampl... | 08/10/2004 |
| 6665376 | Selectively activated integrated real-time recording of telephone conversations with automated documentation of consent to call recording A system for controlling and monitoring the recording of telephone calls in institutions such as jails and correctional facilities, and for obtaining consent to such recording and monitoring. Calls are recorded automatically in response to the occurrence ... | 12/16/2003 |
| 6560316 | Method of monitoring a subscriber of an intelligent network The call number of a subscriber to be monitored is flagged in the service control point SCP with an indicator of one or more subscribers that are authorized to eavesdrop. When a communications link is set up, an identifier for the monitoring measure is tr... | 05/06/2003 |
| 6504907 | Call detail reporting for lawful surveillance A lawfully authorized electronic surveillance operation requires reporting of detailed call data for a variety of calls associated with the subject of the surveillance. For at least some specified calls to or from the subject, the invention provides profi... | 01/07/2003 |
| 6449474 | Method and apparatus for call interception capabilities for use with intelligent network services in a communications system A method and apparatus in a communications system for providing call interception. A call is received at a switch in the communications system. Responsive to the call involving a service using identification numbers unknown to the communications system, a... | 09/10/2002 |
| 6389113 | Dual-alerting paging system and monitoring of return call A technique for monitoring the calls placed to the telephone number associated with the party under surveillance. When a call to the telephone number associated with party under surveillance is placed, the call is routed via an assigned meet-me bridge, an... | 05/14/2002 |
| 6370113 | Method and apparatus for reselection of data trunk upon connection failure A method and apparatus for monitoring voice and data telephone calls by a law enforcement agency, wherein separate monitoring connections for each party to the call are established. Upon determining that a particular call is to be monitored, the group swi... | 04/09/2002 |
| 6359977 | Telephone port with automatic detection and secure A method and system for automatically detecting that a telephone port is being used and securing the telephone line associating with the telephone port, is presented. In one embodiment, a method and system is described for automatically securing a telepho... | 03/19/2002 |
| 6097798 | Electronic surveillance in a public switched telephone network Telephone network surveillance is provided for targeting subscriber terminals that receive service through an office lacking a switch with surveillance capability. A foreign exchange line is relied upon to connect the target's line to an office having tha... | 08/01/2000 |
| 6078648 | Advanced intelligent network (AIN) functionality for electronic surveillance Following the Communications Assistance for Law Enforcement Act (CALEA), the FBI developed a standard set of communication services and interfaces for lawfully authorized electronic surveillance. For telephone communications, the current industry implemen... | 06/20/2000 |
| 6021176 | Method for monitoring incoming calls to a user's premises on a pots telephone line With a personal call manager, when a caller calls a primary telephone number for the owner of the personal call manager, the personal call manager selectively routes the incoming call to any combination of local extensions on the owner's premises, and to ... | 02/01/2000 |
| 6002747 | Telephone privacy and alerting device A telephone privacy and alerting device for connection between a common telephone line and a telephone device. The privacy and alerting device includes a privacy circuit to prevent the telephone device from accessing the telephone line when another teleph... | 12/14/1999 |
| 5943393 | Telecommunications intercept system A telephone wiretapping system having a call-forward event and reporting processor for producing a call-forward event control signal when a call from a calling party to a predetermined telephone line is to be call-forwarded to a different telephone line. ... | 08/24/1999 |
| 5930335 | Method and apparatus for tapping control in an electronic switching system A method for use in an electronic switching system having more than one operator position system connected thereto, is used for wiretapping in order to determine a time length of a telephone call between a caller and a receiver. The method comprises the s... | 07/27/1999 |
| 5926529 | Communication system for detecting an unauthorized intruder terminal unit The invention relates to a communication system comprising a station (2) for charge metering of a connection point. This station comprises a monitoring circuit (7) for detecting a request for a connection set-up from the connection point (3), either for e... | 07/20/1999 |
| 5892811 | Radio telecommunication network and method for unobtrusive call interception via transcoder bypass A digital cellular telecommunication network (30) uses transcoders (50) which vocode voice using a maximal lossy compression algorithm which conserves spectrum usage. A call path for an intercepted call is looped from an outer space satellite (32) network... | 04/06/1999 |
| 5889836 | Apparatus to prevent unauthorized use of telephone lines An apparatus comprising a pair of sensors for monitoring the status of a telephone line and a local station which detects unauthorized use and causes actuation of a disruption signal to make the telephone line unusable.... | 03/30/1999 |
| 5832057 | Lockout device for preventing telephone eavesdropping from an extension device, and method Remote telephone coder 10R and local telephone coder 10L provide coding and decoding for voice communication between remote telephone set 11R and local telephone set 11L through telephone line 12. An eavesdropper listening in on a listening device such as... | 11/03/1998 |
| 5796789 | Alerting device for telephones A telephone alerting device for connection to a telephone line and a telephone. When the telephone is off-hook, the device will generate a visual and an audio alarm if an additional telephone connected to the same line also goes off-hook, thereby providin... | 08/18/1998 |
| 5742665 | Multifunction adaptive telephone line measurement method and system A system which monitors telephone lines includes the capability to detect abnormal line conditions of many varieties. Such detection capabilities include physical damage such as cut line, misuse such as leaving a handset off-hook for an extended period of... | 04/21/1998 |
| 5696810 | Telephone line monitor/alarm This invention is directed to a device for monitoring the integrity of telephone lines and for warning when the lines are inoperative. The device comprises a monitoring unit which continuously senses the voltage across the telephone lines and generates a ... | 12/09/1997 |
| 5617466 | Mechanism for controllably enabling test set to assert off-hook condition on telephone line in dependence upon detection of prescribed voltage level and absence of data traffic The possibility of corrupting digital data traffic carried by a data line (powered or unpowered), by the connection of a telephone test set to the data line is effectively prevented by augmenting the telephone test set with a mechanism that prevents the t... | 04/01/1997 |
| 5590171 | Method and apparatus for communications monitoring A method and apparatus for allowing a communication from a calling party (120) to a called party (130) to be monitored by a monitoring party (140) and/or recorded (180, 190). Upon receipt of a communication, the service node (180) of the system reads iden... | 12/31/1996 |
| 5553116 | Telephone line monitoring apparatus and method A fax monitoring apparatus includes one or more line interface circuits to simultaneously detect and analyze audio signals produced on any given telephone line by two connected fax machines, analyzing circuitry to analyze and interpret the audio signals t... | 09/03/1996 |
| 5544221 | Method and apparatus for prohibiting unauthorized use of a telecommunication line A method and apparatus for prohibiting unauthorized use of a telecommunication line is provided. An interference signal is timely generated by the invention on the telecommunication line such that the illegitimate user may not dial the number correctly. T... | 08/06/1996 |
| 5533092 | Order wire in telephone communication system A switchable order wire circuit installed in addition to a trunk connecting a master station which includes an exchanger and a dependent station in a telephone system. The order wire circuit includes a first telephone terminal located in the master statio... | 07/02/1996 |
| 5436959 | Communication terminal having functions of detecting and preventing line branch A communication terminal connected to a line of an exchange of a public network, includes a main body of the communication terminal, and a line branching detection controller coupled to the main body. The line branching detection controller includes a com... | 07/25/1995 |
| 5402482 | Ring trip deciding circuit A ring trip deciding method in a ring trip circuit detects voltage change in the on-hook state and the on-hook state of a terminal when the terminal such as telephone set connected to the telephone line is called. The ring trip deciding circuit has a ring... | 03/28/1995 |
| 5241699 | Electronic surveillance device detector and method using phase angle differences between two received signals The disclosed invention detects electronic surveillance devices. Should an electronic surveillance device (a bug) be present in a room, the bug will be detecting sounds with a microphone and transmitting on some electromagnetic frequency. In the present i... | 08/31/1993 |
| 5142560 | Wiretap detector and telephone loop monitor A novel method and improved system for the continuous detection monitoring of authorized/unauthorized connections/disconnections including loop bridging wiretapping equipment capable of monitoring recording voice and/or data communications on the subscrib... | 08/25/1992 |
| 5099515 | Secrecy device for wiretapping prevention and detection A secrecy device connected between a telephone handset and a telephone body, which comprises a secrecy circuit for modulating a voice signal received from the handset on a predetermined modulation system basis to send a modulated voice signal to the telep... | 03/24/1992 |
| 4760592 | Wire tap detection device with passive testing The device of the present invention discloses an electrical circuit which is electrically connected to a telephone line or data line between the telephone line or data line and the telephone set. In operation, the device continuously measures various elec... | 07/26/1988 |
| 4726048 | Telephone privacy circuit A telephone privacy circuit is disclosed. The privacy circuit preferably includes a voltage breakdown device which passes current only when the voltage across the device is greater than a predetermined value. The voltage breakdown device is connected in s... | 02/16/1988 |
| 4680783 | Telephone security violation detection device A method and system for detection of authorized connections to a telephone line where such connections are for the purposes of intercepting voice or data messages. The original or base line impedance would be measured by the system in response to the entr... | 07/14/1987 |
