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Match Document Document Title
8028034 System and method for automatically learning mailbox configuration conventions  
A system and method automatically learns mailbox configuration conventions. The validator module determines a valid set of configuration parameters used for accessing an electronic mailbox of a...
8005132 Non-intrusive modem performance analysis  
A method of analyzing the performance of a modem connection. The method includes connecting a line interface to a communication link carrying signals of a modem connection, between a pair of end...
7843841 Method and apparatus for providing automatic crankback for emergency calls  
A method and apparatus for automating test procedures to determine if non-emergency signaling message processing errors impact emergency calls, e.g., E911 calls, are disclosed. In one embodiment,...
7603419 System and method for automatically learning mailbox configuration conventions  
A system and method automatically learns mailbox configuration conventions. The validator module determines a valid set of configuration parameters used for accessing an electronic mailbox of a...
7471945 Methods and apparatus for preventing a third party from overhearing a telephone conversation  
Methods and apparatus are provided for preventing a third party from listening to a conversation between at least two participants on a telephone. The telephone generates an audio stimulus signal...
7447160 Method and apparatus for providing automatic crankback for emergency calls  
A method and apparatus for automating test procedures to determine if non-emergency signaling message processing errors impact emergency calls, e.g., E911 calls, are disclosed. In one embodiment,...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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....
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...
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...
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...
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...
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...
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,...
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...
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...
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...
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...
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...
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...
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...
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....
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...
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...
4658099 Apparatus and method for remotely determining the presence of unauthorized surveillance devices on a communications line  
Method and apparatus for detecting whether or not an unauthorized surveillance device has been installed on a communications line between user terminal equipment and central switching station...
4412353 Mixing circuit  
A mixing circuit having a first signal source, a series connection of a load circuit and in impedance circuit connected in parallel to the first signal source. A second signal source and an active...
4218592 Telephone analyzer for detection of clandestine devices  
The apparatus is connected to the mounting cord of a subscriber telephone set and determines whether or not certain clandestine circuits or devices are connected across pairs of conductor lines in...
4136266 Telephone intruder alert system  
A telephone intruder alert system is operative for indicating to a current on-line user of a primary extension telephone which is already interconnected with the telephone line of the subsequent...
4081614 Supervised single link telephone system  
An administrative telephone system for use in schools, hospitals and the like which includes a dialable administrative telephone set and a plurality of dialless remote or "staff" telephone stations...
4060700 Two-party telephone system  
The present invention relates to a two-party telephone system intended for external calls to and from each of the telephone sets included in the system, and speech connection between said telephone...
3997737 Security line card circuit  
To prevent clandestine listening devices located in a key telephone subscriber station from utilizing the tip and ring leads of the subscriber station as a transmission path out of the subscriber's...
3909561 Circuit use warning device  
The disclosure is a circuit use warning device particularly for telephonic installation which includes a voice communication circuit and a test circuit that can be connected and disconnected for...
Matches 1 - 50 out of 56 1 2 >