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| Number | Title | Issue Date |
| 7349526 | Methods for testing cable pairs in a telecommunications network Methods are disclosed for testing cable pairs in a telecommunications network. One method connects a test line to a telecommunications switch. The test line is connected to an inactive cable pair. The inactive cable pair has no telecommunications service established... | 03/25/2008 |
| 7283807 | Method and telecommunication system for indicating the receipt of a data message The method operates in a telecommunications network having at least one subscriber terminal corresponding to at least one subscriber at a subscriber location. The method implements a message waiting indication service for indicating the presence of a data message co... | 10/16/2007 |
| 7177396 | Apparatus for management and remote control of electrical characteristics of wire pairs connected to a telephone exchange An apparatus for the management and the remote and/or automatic control of electric characteristics and signal transmissivity of the metallic line pairs connected to a telephone exchange, including measurement means and means able to connect said measurement means t... | 02/13/2007 |
| 7162011 | Method and device for measuring the quality of a network for the transmission of digital or analog signals A method for measuring a quality of a line network using an in-service non-intrusive measurement device monitoring of live traffic measurement process includes determining reference values of parameters of the in-service non-intrusive measurement process for a conne... | 01/09/2007 |
| 7103159 | Off-hook notifier A method for handling an off-hook event can include the step of detecting an off-hook event with a modem communicatively linked to a circuit loop in which the off-hook event occurs. The detection can be based upon audible information conveyed within the circuit loop... | 09/05/2006 |
| 7068758 | Integrated metallic access for high port density DSLAM A multi-services access platform is presented for supporting metallic test access in switching or multiplexing devices such as digital subscriber line access multiplexers (DSLAMs). The multi-services access platform includes a chassis within which a predetermined nu... | 06/27/2006 |
| 7042984 | Method for inspecting transmission channels in a communications system having peripheral modules Transmission channels indicated as occupied in a communications system having peripheral modules are inspected for preparing subscriber-side transmission channels. A test sequence transmitter on the system side transmits a test sequence to a control unit for a selec... | 05/09/2006 |
| 6940949 | Ring, tip, ground testing tool An apparatus and a method for determining faults in a telephone line. The apparatus has an enclosure housing a switch. The switch is for electrically communicating with a ring wire of a telephone line, with a tip wire of the telephone line, and with an electrical gr... | 09/06/2005 |
| 6925053 | Method and apparatus for providing backup telecommunication service A technique for providing telecommunications service is disclosed that uses a test bus to test customer subscriber lines and to provide a connection between a customer subscriber line and transmission equipment, which handles outbound backup calls. This backup trans... | 08/02/2005 |
| 6917669 | Processes and systems for managing testing of communications systems Processes and systems are disclosed for managing a request for a test of a communication system. One embodiment communicates with a communications network and acquires the request. The request may be annotated with at least one of a date, a time, and an origin of th... | 07/12/2005 |
| 6618469 | Circuits and methods for testing POTS service Circuits for testing POTS service on a shared POTS/xDSL carrier include microfilters for selective coupling to the subscriber loop side of an xDSL filter associated with a subscriber line interface circuit. Such configurations facilitate testing of the PO... | 09/09/2003 |
| 6580783 | 2nd level power fault testing apparatus for testing telecommunications equipment A power fault testing apparatus for testing telecommunications equipment interfaces to Telcordia's 2nd Level AC power fault standards. The apparatus is powered by a three-phase 480 VAC, 600 A power service. A plurality of transformers, includin... | 06/17/2003 |
| 6535579 | Network interface device with disconnectable half-ringer A telephone network interface device (NID) includes a test circuit that is readily connected and disconnected. The NID has a portion of an electrical circuit that connects a pair of provider wires as well as a pair of test wires to a pair of subscriber te... | 03/18/2003 |
| 6519321 | 2nd level power fault testing apparatus for testing telecommunications equipment A power fault testing apparatus for testing telecommunications interfaces to BellCore's 2nd Level AC power fault standards. The apparatus is powered by a three-phase 480 VAC, 600 A power service. A plurality of transformers and load resistor ba... | 02/11/2003 |
| 6496566 | Metallic testing of a subscriber loop that provides both voice and digital subscriber line services Metallic testing of a subscriber loop that provides voice and DSL services is provided by a voice switch and DSL services, each of which includes a metallic test unit. A voice line card has a connection to a first metallic test bus connected to the voice ... | 12/17/2002 |
| 6266326 | Apparatus for loop testing in a communication system The present invention provides a test access path (TAP) concentration function. The apparatus supports subscriber loop testing for special access configurations (e.g., fiber-to-the-curb (FTTC)), where network units are physically clustered together into t... | 07/24/2001 |
| 6233312 | Inter-circuit line fault location in telecommunication networks Circuit faults between different circuits in a telecommunications network are located. In this invention a test signal is generated on a particular circuit and all adjacent circuits are tested for the presence of the test signal. Using information from a ... | 05/15/2001 |
| 6058161 | System and method for programmable telephone subscriber line test A system and method for providing software-implemented, programmable testing of telephone subscriber line power conditions. The system detects subscriber line faults including resistive faults and foreign voltages on a telephone subscriber line. A user in... | 05/02/2000 |
| 5995588 | Tone location device for locating faults in a paired line A device and method are provided for locating faults in a paired line. The fault locating device has a transmitting unit connectable to the conductors of a paired line containing the fault. The device also has a portable receiving unit to track the path o... | 11/30/1999 |
| 5960060 | Line tester for coin-operated telephones A line tester unit for coin-operated telephones that permits the interface between the coin-operated telephones and the telephone network to be efficiently verified at most access points throughout the telephone network.... | 09/28/1999 |
| 5946374 | Pair gain test unit for use in a combined telephony/video co-axial cable termination unit A test system for performing pair gain tests within a co-axial cable termination unit of a combined telephony/video system is described. The combined telephony/video system provides a set of telephony channels and video channels to the co-axial cable term... | 08/31/1999 |
| 5933011 | Ground path testing A method and device for testing the quality of a ground path, particularly although not exclusively for a telecommunications system. The device has terminals for connection to respective lines, such as tip and ring. A terminal is provided for connection t... | 08/03/1999 |
| 5920609 | Metallic access test extension system architecture A metallic access test extension system architecture for a digital transmission system is provided. The digital transmission system includes a local end and a plurality of remote ends, each of said plurality of remote ends including a digital communicatio... | 07/06/1999 |
| 5903625 | Automatic polling of direct access test unit to obtain usage data A line-conditioning test unit query system automatically queries direct access test units of respective telephone facilities that are used for conditioning and testing telephone lines, to obtain data representative of usage by the test units. A centralize... | 05/11/1999 |
| 5870451 | Method and apparatus for high impedance ringer detection A line test system for diagnosing and segmenting faults in a switched telephone network. The system includes a remote measurement unit installed at a switch and a test system controller. The test system controller stores data about operating parameters of... | 02/09/1999 |
| 5835567 | Telephone line circuit testing jumper plug A testing device to close a circuit between first or second sections of a pair of lines within a connector block in which the first and second sections of each line are normally connected by pairs of connector parts with which the sections of the lines ar... | 11/10/1998 |
| 5832058 | Test interface adapter emulating no test trunk interface for non-standard central office switch A test interface adapter allows a line-conditioning or test device, such as a direct access test unit (DATU), that is normally interfaced with a standard central office switch via a no-test trunk, to be coupled to and communicate with the respective ports... | 11/03/1998 |
| 5828728 | Telecommunications network Testing of pre-ringing signalling in a telecommunications network at customer's premises, for example, signalling to activate a caller display unit may be effected remotely. By establishing a test call through the network by way of a dial-back loop to a t... | 10/27/1998 |
| 5812934 | Method and apparatus for a cross-connect system with automatic facility information transference to a remote location Automatic facility information transfer to remote locations in cross-connect systems is accomplished by providing limited telephone services to wired premises not having permanent telephone service by enabling 911 calls, calls requesting permanent service... | 09/22/1998 |
| 5802143 | Identification of damaged cable pairs in a telecommunications network and restoration of telephone service to subscribers A method for identifying damaged cable pairs in a pulp cable comprises arbitrarily attaching proximal ends of damaged cable pairs to ports on a first connector block of a service restoration system (SRS), and arbitrarily attaching distal ends of damaged c... | 09/01/1998 |
| 5799060 | Multi-port caller ID-based telephone ringback test device A multi-ported, caller ID-based test unit, which may be installed in the central office of a public switched telephone network, is capable of determining the telephone number, subscriber name and various other information associated with the subscriber li... | 08/25/1998 |
| 5778050 | Portable line test telephone The portable line test telephone of the present invention consists of the switching means to operate different kinds of tests, the high voltage generating means to measure telephone capacity and insulation resistance, the dialing means to call and the cal... | 07/07/1998 |
| 5768365 | Circuit for sensing telephone line conditions A circuit for sensing telephone line conditions, comprising: high impedance termination means across the telephone line; means for accumulating charge through the high impedance termination means; and electrical isolator means intermediate the means for a... | 06/16/1998 |
| 5764725 | Apparatus for testing the line continuity of telephone switch equipment An apparatus for testing the racks and installation wiring of telephone switch equipment takes the form of a module capable of insertion into the various slots of a particular rack configuration. The module includes a circuit board which terminates in a c... | 06/09/1998 |
| 5764727 | Metallic access test extender A metallic access test extender includes an office unit and a remote unit coupled to the office unit via a digital transmission system. A voltage controlled current source is included in the office unit and a voltage controlled voltage source in the remot... | 06/09/1998 |
| 5754624 | Telephone line test kit An electrical test kit for testing a telephone line from the terminals at the customer's end of the line includes a circuit for testing line continuity without falsely indicating to the voltage source that a telephone call has been answered, a push-button... | 05/19/1998 |
| 5712898 | D4 channel bank with multi-mode formatted, performance-monitoring communication bus A performance monitoring arrangement conducts auxiliary in-band communications between a line interface unit and one or more channel units of a D4 channel bank without interrupting transmission of digital data to and from a customer premises. During a fir... | 01/27/1998 |
| 5677941 | Channel test unit Disclosed is a circuit included in a channel unit for testing that channel unit in a telecommunications system. A digital signal processor detects and reproduces signals from a local digital switch and controls a number of relays which result in various t... | 10/14/1997 |
| 5636262 | Interface scanning circuit An interface scanning circuit includes a current source at the input to a multiplexer. The current source includes a transistor disposed between two resistors, the second one of which limits reverse current. Also provided are an attenuating network includ... | 06/03/1997 |
| 5598455 | Alarm and test system for a digital added main line A test system directed to apparatus for transmitting and receiving multiple telephone transmission signals over a single twisted pair. The system converts an analog signal from a local switching station to an 80 ksymbols/sec signal for transmission over a... | 01/28/1997 |
