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| Number | Title | Issue Date |
| 7406157 | Methods and apparatuses for determining loop characteristics using an extended voice-band modem Embodiments of the invention provide methods for determining the characteristics of a local loop using the multi-carrier tones of a DSL activation process. For one embodiment, one or more sets of downstream multi-carrier tones of a digital subscriber line activation... | 07/29/2008 |
| 7336061 | Group wiring system allowing locating of wire pairs and method for locating wire pairs in group wiring system A group wiring system includes a hub of a server system, a distribution frame including a plurality of wire pair receptacles, a plurality of remote receptacles, a testing device, and a plurality of testing circuits. Each testing circuit is coupled between conductive... | 02/26/2008 |
| 7248200 | Analog to digital conversion method using track/hold circuit and time interval analyzer, and an apparatus using the method An analog signal is sampled; a reference signal synchronized to the sampling is generated; the sampling result is compared to said reference signal; the time interval from the sampling point to the time the comparison result satisfies the prescribed condition is acq... | 07/24/2007 |
| 7217152 | Patch panel with tracer Embodiments of a patch panel with tracer are presented herein. In an implementation, an apparatus includes one or more jacks, each being associable with a cable having signal conductors. At least one of the signal conductors is configured to communicate a signal bet... | 05/15/2007 |
| 7208955 | Power relay or switch contact tester Embodiments of the invention include a test circuit having an auxiliary low power test signal generator, filters, and a detector to test a power switch. The generator sends an auxiliary low power test signal having a different frequency than a power signal for the s... | 04/24/2007 |
| 7116760 | System and method for single-ended line analysis for qualification and mapping In a system and method for determining the suitability of a copper pair line for xDSL service use, characteristic parameters of a copper pair line to be tested are measured. These characteristics include a wire gauge, length, and temperature of the copper pair line.... | 10/03/2006 |
| 7103147 | Methods and apparatuses for determining loop characteristics using standard voice-band modem Embodiments of the invention provide methods and apparatuses to determine the characteristics of a local loop using the multi-tone line-probing signals of a standard voice-based modem. For one embodiment, the multi-tone, line-probing signals of a voice-band modem ar... | 09/05/2006 |
| 7103148 | DSL communication method of performing an interruption and a reconnection when an S/N ratio is outside of a predetermined range for a duration longer than a reference time A DSL communication method is used for interconnecting a user and a center by using a 2-wire telephone line and a DSL communications technology so that the user and the center perform an intercommunication. The DSL communication method comprises the step of monitori... | 09/05/2006 |
| 7079555 | Integrated digital loop carrier system with virtual tributary mapper circuit An integrated digital loop carrier (IDLC) system includes digital line feeders and signal processors to interface with the feeders an to ultimately provide data to subscriber instruments. The system can be employed as a central office terminal (COT) or remote digita... | 07/18/2006 |
| 7076031 | System and method for telephone signal collection and analysis An apparatus, system, and method for telephone signal collection, processing, and analysis is provided. The apparatus includes a portable field unit for capturing telephone signal data including (a) a connection interface for connecting to the telephone line and rec... | 07/11/2006 |
| 7072449 | System and method for establishing a power level for a communication signal transmitted in a conductor A method of establishing a transmission power level for signals transmitted in a conductor is provided in an environment where signal interference is present between the signals in the conductor and separate signals carried in a proximate conductor. The method inclu... | 07/04/2006 |
| 7068755 | Methods and apparatus for characterizing subscriber loop based on analysis of DSL handshaking signals and for optimization of DSL operation In some embodiments, a method includes performing at least part of a digital subscriber line (DSL) handshaking process by transmitting at least one handshaking signal via a telephone subscriber loop, and analyzing the at least one handshaking signal to detect a char... | 06/27/2006 |
| 7065470 | Plug-and-socket device comprising an integrated diagnostic/evaluation circuit, display and switchable terminating resistors Plug and socket devices for measuring and diagnostic purposes are known in the art. The substantial disadvantage of said plug and socket devices is that they only furnish mechanical and electrical connections. For diagnostic purposes, an additional socket for connec... | 06/20/2006 |
| 7061872 | Managed HDSL repeater A repeater for HDSL transmission is presented. The repeater replaces the regenerator commonly used in HDSL by utilizing the activation/deactivation process in the HDSL specification. The repeater is adjusted to detect an activation/deactivation sequence, whereby a f... | 06/13/2006 |
| 7019220 | Supporting device for discrete electric component A supporting device (21) for a discrete electric component is so designed as to include a supporting part (22), and this supporting part includes a main body (26), and a pair of first flange portions (27a, 27b) and a ... | 03/28/2006 |
| 7020246 | Time domain reflected signal measurement using statistical signal processing An apparatus and technique for determining whether a telephone loop is capable of carrying a Digital Subscriber Line (DSL) signal. Time domain reflected (TDR) signals that are echoes of transmit impulse signals are processed using time domain echo averaging and echo... | 03/28/2006 |
| 7012991 | Qualifying telephone lines for data transmission The method assesses the suitability of customer telephone lines (12, 13, 14) for data transmission. The method includes selecting a telephone line having tip and ring wires by means of a computer (30) and switch (15), and electrically connecting... | 03/14/2006 |
| 6973095 | Remote circuit provisioning A machine readable medium for remote circuit provisioning is described. In one embodiment of the invention, a machine readable medium comprises receiving a packet on a circuit and provisioning the circuit in response to receiving the packet, wherein provisioning the... | 12/06/2005 |
| 6959037 | System and method for locating and determining discontinuities and estimating loop loss in a communications medium using frequency domain correlation A system for determining characteristics associated with a communication channel includes a transmitter for transmitting a first signal via the communication channel. The system includes a receiver for receiving a second signal via the communication channel in respo... | 10/25/2005 |
| 6944286 | Ground key detection circuit and method for interference-resistant detection of the activation of a ground key for telephones A grounding key detecting device and method for interference-proof detection of the operation of grounding keys in telephones. A circuit that detects the operation of a grounding key includes a current detection device configured to detect a current flowing when the... | 09/13/2005 |
| 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 |
| 6914963 | Determining the composition of subscriber loops from frequency domain measurements Techniques for estimating distances to irregularities on a subscriber loop are described. A loop response is measured in the frequency domain. The loop response is weighted by a prolate spheroidal wave function to yield a weighted response. The weighted response is ... | 07/05/2005 |
| 6914976 | TELECOMMUNICATIONS CUSTOMER SERVICE TERMINAL HAVING ELECTRONIC COMPONENTS SEALED IN A FIRST COMPARTMENT AND HAVING AN UNSEALED COMPARTMENT THAT CONTAINS AN INSULATION DISPLACEMENT CONNECTOR BOARD THAT INCLUDES VOLTAGE SURGE PROTECTION A telecommunications customer service terminal provides telecommunications service between a telecommunications line and a plurality of telephones and/or data processing devices. The customer service terminal includes a housing having a base. A first cover is secure... | 07/05/2005 |
| 6909894 | Echo plug for a wireless telephone Echo plugs are plugged into the hands-free jacks of wireless telephones to facilitate testing. One echo plug has a pin and a circuit. The pin is physically compatible with the hands-free jack of a wireless telephone. The pin has a speaker connection and a microphone... | 06/21/2005 |
| 6816575 | Single ended loop loss measurement by frequency domain reflectometry-based signal processing A single ended, frequency domain reflectometry signal processing based scheme measures loop loss of a telecommunications wireline. A distortion-corrected, normalized data array is differentially combined with an associated set of wireline noise spectrum values. The ... | 11/09/2004 |
| 6574311 | Apparatus and method for detecting a bridged tap and/or an end-of-line of a conventional telephone line using delay-line time-domain reflectometry A delay-line time-domain reflectometer includes a return detector configured to process a discharge pulse produced by discharge of a line capacitor, formed by the physical relationship of a pair of conductive wires forming a telephone line, from a predete... | 06/03/2003 |
| 6532277 | Method for controlling DSL transmission power A method for controlling transmission power from a customer premise equipment device over a local loop of a digital subscriber line involves determinating a maximum power level for transmissions over the local loop. The maximum power level is based on a r... | 03/11/2003 |
| 6516054 | Method for adjusting current levels, which have been falsified by offset-current levels, in a subscriber line circuit An adjustment and current-measurement method for a subscriber line circuit of a digital telephone exchange is integrated in the low-voltage section of the subscriber line circuit. A previously determined disturbance variable, which is stored in the low-vo... | 02/04/2003 |
| 6470046 | Apparatus and method for a combined DSL and voice system Apparatus and method for a central office data communications apparatus allows for combining the voice POTS and high speed modem data processing functions into one device at the central office. The combination of the signals allows for a single high-speed... | 10/22/2002 |
| 6356624 | Method and apparatus for detecting and measuring foreign voltages A sensor capable of being coupled to a transmission line and monitoring a foreign voltage on the transmission line includes a voltage monitoring circuit. The voltage monitoring circuit is adapted to operate in a foreign voltage detection mode in response ... | 03/12/2002 |
| 6084947 | Digital signal detector and method A signal detector 100 and method detects digital signals on a signal path 102. The signal detector 100 comprises a sample detector 108 which detects digital code samples for past sample periods and the instant sample period. Past digital code samples are ... | 07/04/2000 |
| 5881130 | Fast and noise-insensitive load status detection Method and apparatus for detecting whether load coils are attached to a telephone line. A stimulus waveform having multiple frequency components is applied to the line. The current and voltage at the near end of the line are coherently sampled and transfo... | 03/09/1999 |
| 5625667 | Method of predicting voltages in telephone line measurement For measuring characteristics (resistance, capacitance, and foreign voltage) on a telephone line, source voltages are coupled via source resistances to the line in three test conditions and the parameters are calculated from steady state voltages at the t... | 04/29/1997 |
| 5621720 | Multichannel alignment system and method A DS3 level access, monitor and test system for a telephone network. The system provides selective, and hitless, bit overwrite in any of the embedded DS1, DS0 and subrate channels in a DS3 signal. Multiple DS0 and subrate channels can be tested via the as... | 04/15/1997 |
| 5561700 | Device for measuring analog telephony signals A device, for digitally measuring in real-time analog telephony signals appearing on a subscriber line during a telephone call thereover, having a converter for converting analog subscriber line voltages into corresponding digital samples, a memory for st... | 10/01/1996 |
| 5444759 | Method of predicting voltages in telephone line measurement For measuring characteristics (resistance, capacitance, and foreign voltage) on a telephone line, source voltages are coupled via source resistances to the line in three test conditions and the parameters are calculated from steady state voltages at the t... | 08/22/1995 |
| 5404388 | Digital measurement of amplitude and phase of a sinusoidal signal and detection of load coil based on said measurement In digital measurement of the amplitude and phase of a sinusoidal signal of known frequency by the least square error method, the sampling frequency and sample size are carefully selected to satisfy a certain relationship. Under these conditions, the meas... | 04/04/1995 |
| 5347566 | Retrofit subscriber loop carrier system with improved performance monitoring and remote provisioning An improved subscriber line carrier (SLC) with enhanced performance for monitoring and remote provisioning. Communication between the new control unit and new channel units (such as universal remote provisionable channel unit) utilizes a back plane read d... | 09/13/1994 |
| 5260994 | Maintenance termination unit module A maintenance termination unit module for housing electronic equipment including a maintenance termination unit electronic circuit for use in a telecommunications network, comprises a housing portion and a base portion. The electronic equipment is located... | 11/09/1993 |
| 5241581 | Maintenance terminal of a validation and identification unit Maintenance terminal of a validation and identification unit defined as a tool designed to accomplish two functions allowing the local initialization of the validation and identification unit or of the adaptation unit of public modular telephones, so bein... | 08/31/1993 |
