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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7773728 | Circuit and method for providing access to a test and/or monitoring system A circuit (10) and method for providing test and/or monitoring access to at least two telecommunication lines (18). This circuit (10) comprises at least one bus (12) and at least two primary branches (14) extending there from, at l... | 08/10/2010 |
| 7769140 | Analog subscriber board The present invention is a new solution of line and relay in an analog subscriber board, which has a less number of relays and can decrease the cost and save the space while realizing the basic functions in a voice network. The technical solution of the invention pr... | 08/03/2010 |
| 7298829 | Communications devices including test circuits and related circuits and methods A communications device can include first and second input terminals configured to provide coupling with respective first and second conductors of a communications line, and first and second signal conductors respectively coupled with the first and second input term... | 11/20/2007 |
| 7286952 | Method for testing subscriber access lines A method for testing subscriber access lines wherein the test is carried out locally, online and virtually all the time with the assistance of the digital signal processor for the subscriber line. The test results are gathered at a central point and are signaled fro... | 10/23/2007 |
| 7283618 | Automatic line pair detection in a modem The present invention provides a solution that automatically detects and connects the properly terminated line pair and then allows modem training to proceed. The present invention can set a control parameter at the physical layer that establishes a training “stat... | 10/16/2007 |
| 7254110 | Pots extender for voice fallback in a subscriber line A full services access multiplexer is described. A master digital subscriber line (master DSL) modem is coupled to a conductor pair. A POTS extender also is coupled to the conductor pair and may sense the operation of a fallback or other signal on the conductor pair... | 08/07/2007 |
| 7251754 | Fault management system for a communications network A fault management system is directed to the access network part of a communications network where terminating lines in the form of pairs of copper wires extend from a local switch through a series of nodes to terminal equipment provided for user of the network. Eac... | 07/31/2007 |
| 7245583 | System and method for providing lifeline telecommunication service to line-powered customer premises equipment A system for providing lifeline telecommunication service includes a telecommunication interface, a data packet service module, an analog signal service module, a power generator, and a switch. The telecommunication interface receives telecommunication information f... | 07/17/2007 |
| 7240245 | Fault management system for a communications network A fault management system is operated for an access network which forms part of a communications network. In the access network, terminating lines in the form of pairs of copper wires extend from a local switch through a series of nodes to terminal equipment provide... | 07/03/2007 |
| 7227928 | Arrangement for line-testing This invention generally relates to the arrangements for testing subscriber loops. The invention is based on a solution wherein a test head is behind the high-pass filter of the splitter. In order that this solution is possible, the splitter, i.e. the splitter box h... | 06/05/2007 |
| 7200205 | Interface device for testing a telecommunication circuit An interface device and method for testing a telecommunication circuit by utilizing a test cord that has a first end that is integrated with the interface device and a second end that terminates with a test connector. Upon insertion of the test connector into a test... | 04/03/2007 |
| 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 |
| 7158613 | Method and system for enabling circuit testing services on a multi-service provisioning platform A telecommunication multi-service transport platform system is disclosed. It has at least one service card providing a predetermined telecommunication service, and at least one protection card for replacing the service card when the service card fails. The protectio... | 01/02/2007 |
| 7106834 | Digital subscriber line diagnostic system A communication device transmits very low frequency signals in order to help diagnose the cause of a communication problem in a DSL communication system. The communication problem may be, for example, the inability of a remote data transceiver unit (DTU-R) to succes... | 09/12/2006 |
| 7065180 | System and method for hitless monitoring access of a communications circuit A system for monitoring a plurality of communication circuits includes an impedance element configured to be switchably connected to one of the plurality of communication circuits. The impedance element is configured as a short circuit relative to the one of the plu... | 06/20/2006 |
| 7058174 | System and method for providing lifeline power service to digital subscriber line customers A system and method that provides lifeline service to DSL customers when a loss-of-power message is sent to the central office from an integrated access device on the customer premise. If a predetermined number of loss-of-power messages are received then power is pr... | 06/06/2006 |
| 7050546 | System and method for providing POTS services in DSL environment in event of failures A system and method are presented for providing a telephone service. An analog signal is received from a telephone and the analog signal is converted into a digital signal in a first format. A modem is provided for receiving the digital signal in the first format. A... | 05/23/2006 |
| 7031435 | Method and apparatus for simultaneous line-interface wiring collision detection A method uses circuitry in a data interface that provides telephony service over a high-speed network to detect the presence of a secondary source of VBH battery voltage on a tip-ring system. If a detected source other than the data interface is impressing battery v... | 04/18/2006 |
| 7027589 | Single-ended loop test circuitry in a central office DSL modem A central office modem (50) that includes the capability of single-ended loop testing (SELT) is disclosed. The modem (50) includes a digital signal processor (54), a codec (56), line driver and receiver circuitry (58), and a hybrid... | 04/11/2006 |
| 7010096 | Remote testing of a communications line Apparatus and method for remotely measuring characteristics of a communications line (4) wherein a receiver unit (8) is connected a remote end of line (4) between conductors (10,12) of the line (4) and a sender unit (6) is c... | 03/07/2006 |
| 7003089 | Splitter for analog telephone signal and digital data In a telephone system where frequency multiplexed analog telephone signals and digital data signals are transmitted over a line, incoming calls are announced to the customer installation by a ringing indication signal having an amplitude between 1 and 30 V RMS, whic... | 02/21/2006 |
| 6996729 | DSL communication apparatus with lifeline functionality suitable for transmitting and receiving voice signals during power failure A DSL communication apparatus with lifeline functionality is provided, the DSL communication apparatus (3) in particular being suitable for CVoDSL (“Channelized Voice over Digital Subscriber Line”) transmission. The DSL communication apparatus (3) ... | 02/07/2006 |
| 6922464 | System and method for hitless monitoring access of a communications circuit A system for monitoring a communications circuit includes at least one impedance element connected to the communications circuit when the communications circuit is established. Communication devices communicating via the communications circuit adapt to the presence ... | 07/26/2005 |
| 6904130 | Test unit for interface between telephone company demarcation point device and customer's telephone system A test unit for determining whether a local telephone company demarcation point device is providing telecommunication signals to one of a plurality of telephone lines of a telephone system includes: a demarcation point connector that is configured to interface with ... | 06/07/2005 |
| 6870902 | Customer services terminal method and apparatus for testing a plurality of interface circuits and telephone lines that are connected thereto Customer services terminal input connected between telephone exchange and outputs. Interface circuits provide service between input and outputs Test means applies test conditions to interface circuits and/or to outputs associated with the interface circuits, and/or ... | 03/22/2005 |
| 6870903 | Method and apparatus for self-testing a customer services terminal and for loop testing telephone lines that are connected thereto A telecommunications system includes a telephone exchange and a customer services terminal whose input is connected to the telephone exchange, and whose plural outputs are individually connected to one of a plurality of telephone lines. A plurality of interface circ... | 03/22/2005 |
| 6862352 | Controlled switching mechanism for accomplishing soft polarity reversal, ring-trip filtering, and line voltage measurements in a subscriber line interface circuit using common capacitor A controllably switched arrangement selectively couples multiple circuit functions, such as reverse polarity detection, ring-trip and line voltage measurement, of a telecommunication card to the same external programming component (e.g., capacitor) on an as needed b... | 03/01/2005 |
| 6826155 | Apparatus and method for facilitating standardized testing of signal lines The present invention provides for an apparatus and a method for testing and evaluating a transmission line. A set of command and data signals is received through an input/output interface. The command and data signals from the input/output interface are processed f... | 11/30/2004 |
| 6785325 | DSL splitter providing test access to an interconnected subscriber loop and method A DSL splitter providing test access to an interconnected subscriber loop and method are disclosed. The DSL splitter in a first test mode, provides access to allow testing of an interconnected subscriber loop by way of a DSL input. A disconnect in series with an ass... | 08/31/2004 |
| 6771740 | Line sharing multipoint pots splitter controllable line selector The eavesdropping prevention system and method of the present invention provides a controllable line selection unit which couples a receiver and a transmitter to a selected one of a plurality of subscriber loops according to the current channel of a time-multiplexed... | 08/03/2004 |
| 6633628 | Apparatus and method for selecting a supported signal path for a transceiver A method and apparatus for selecting a supported signal path for a transceiver in a communication system is provided. An exemplary embodiment of the apparatus includes a relay for selecting a first test signal path from a first signal path and a second si... | 10/14/2003 |
| 6594343 | Splitter bypass architecture for testing multiple ports The invention described herein relates to a splitter bypass system and method for monitoring, testing and maintaining copper loops and lines. Switching devices are implemented in the present invention to bypass a low pass filter and/or a high pass filter ... | 07/15/2003 |
| 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 |
| 6574309 | Remotely actuated splittler bypass system and method The present invention is directed to a remotely actuated splitter bypass function (RASB) working in conjunction with a test head at the central office for testing and maintaining copper loops in the digital subscriber line environment. The RASB allows a c... | 06/03/2003 |
| 6556661 | In-line telephony data protector with line condition announce A data protector for telephony test equipment, comprising a relay for selectively connecting the telephony test equipment to a telecommunication line, and electronic circuitry. The electronic circuitry includes a detector portion adapted for detecting sig... | 04/29/2003 |
| 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 |
| 6512817 | Method and apparatus for polling telephony line status in an integrated services hub to reduce power consumption The present invention discloses a method for reducing battery power consumed by an integrated services hub supporting a plurality of telephone lines. The status of power to the integrated services hub is monitored, and upon detecting a failure of primary ... | 01/28/2003 |
| 6510204 | Method and apparatus for providing an all digital loop with power-optimised mode An apparatus for use in an all digital loop contains a first network node (30), a second network node (31), and a data transmission line (32) there between. Each one of the first and second network nodes (30, 31) is operable to transmit to the other at le... | 01/21/2003 |
| 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 |
