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| Number | Title | Issue Date |
| 7436935 | Qualifying telephone lines for data transmission A system for qualifying subscriber lines in a telephony system for high speed data services. The system includes a measurement unit that makes one ended electrical measurements on the subscriber lines. Measurements on the subscriber lines are used to predict which o... | 10/14/2008 |
| 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 |
| 7349345 | Method and apparatus for testing communications between a network edge device and a customer premises device A method and apparatus for testing communications within a broadband network between a network edge device and a customer premises device. Network data traffic is diverted from the customer premises device to a test device. The test device emulates the customer prem... | 03/25/2008 |
| 7336770 | Method and apparatus for telephone line testing A method and apparatus for qualifying a telephone transmission line for XDSL communication services is disclosed. The system includes a modem, located at the customer premises to be connected. The modem analyzes actual signals to determine the electrical characteris... | 02/26/2008 |
| 7313517 | Method and system for speech quality prediction of an audio transmission system Method and system for measuring the transmission quality of an audio transmission system (10). Preprocessing means (12) are present for preprocessing of an input signal (X) and an output signal (Y) to obtain pitch power densities (PPXwIKss(j)” 1′PY... | 12/25/2007 |
| 7305067 | Tone distribution apparatuses, systems, and methods An apparatus and system for connecting a tone generator to a plurality of conductors communication line. The apparatus includes an interconnect structure that includes multiple leads each including an electrically conductive portion having a first end and a second e... | 12/04/2007 |
| 7301349 | Array sensor electronics Circuits and methods for detecting and amplifying sensor and sensor array (102, 104) output signals are presented. According to some aspects, a nonlinear feedback loop containing a sensor element provides a nonlinear transformation that compensates for a corr... | 11/27/2007 |
| 7302046 | Method for the detection of impedances and for the qualification of the telephone lines The invention relates to a method for detection of impedances, in particular along inductances, in telephone lines of the type with two metal wires as signal conductors (twisted pair), having the following method steps: a test signal in the form of an A... | 11/27/2007 |
| 7302361 | Modular telecommunication test unit A test unit for data communication networks is formed by placing one or more application modules between a front module and a rear module. The modules are secured together with a latching system and a bus structure provides for control and performance information tr... | 11/27/2007 |
| 7302379 | DSL system estimation and parameter recommendation Estimates of a communication system configuration, such as a DSL system, are based on operational data collected from a network element management system, protocol, users and/or the like. The operational data collected from the system can include performance-charact... | 11/27/2007 |
| 7283635 | Headset with memory A headset having a built-in memory to store parameter settings relating to headset performance characteristics such as headphone(s) and/or microphone performance characteristics. The performance characteristics can be measured during headset production and stored in... | 10/16/2007 |
| 7271577 | Testing loop impedance in an RCCB electrical test circuit A method and apparatus for testing the loop impedance in residual current circuit breaker (RCCB) protected circuits is provided. An alternating test current is applied across the phase earth connections of a supply and a plurality of voltage samples are then taken a... | 09/18/2007 |
| 7269151 | System and method for spectrum management of a shared frequency band A system and method for managing the spectrum utilization of a frequency band that is shared, both in frequency and time, by multiple devices. At one or more devices operating in the frequency band, pulses associated with signals occurring in the frequency band are ... | 09/11/2007 |
| 7263174 | Predicting performance of telephone lines for data services A method characterizes a customer line for data transmission. The method includes measuring electrical properties of the customer line from a central location, identifying a line model from the measurements, and identifying a modem model for a modem selected for use... | 08/28/2007 |
| 7237161 | Remote integrated circuit testing method and apparatus A method and system for remotely testing an integrated circuit installed in an integrated circuit system is presented. The integrated circuit is equipped with test structures for testing functional blocks within the integrated circuit, and a test access mechanism co... | 06/26/2007 |
| 7236573 | Method and apparatus for testing telephone sound quality A method and apparatus for testing telephone sets to determine their sound quality comprising a system for repeatedly applying a sequence of pulse tones to a test telephone where the respective tone frequencies are different and within the normal human voice range. | 06/26/2007 |
| 7237028 | System and method for managing network bandwidth usage in the provision of an e-mail service Bandwidth loading on the network is managed by pushing e-mail message traffic out to the edges of the network at times when bandwidth demand is low. To accomplish this, a user's e-mail is cached at the proxy server nearest to his presumed location. This decentralize... | 06/26/2007 |
| 7227891 | Transceiver employing training-while-working mode A data communication transceiver, such as a PCM or xDSL modem, is operable in a training-while-working mode in which it both trains and communicates user data. In some embodiments, upon initiation of a data communication session, the transceiver operates in a startu... | 06/05/2007 |
| 7194068 | Autonomous voice responder unit A system operatively connected to a network and method thereof includes a voice quality tester (VQT) to generate a calling signal and an automated voice responder unit (VRU) to receive the calling signal. The autonomous VRU and the VQT include a first task list and ... | 03/20/2007 |
| 7173941 | Resilient detection of repeaters An apparatus and method are detailed that allows for improved detection of communication devices and/or doublers in an associated physical communication links, in particular on HDSL communication links. The improved device apparatus and method additionally allows fo... | 02/06/2007 |
| 7151819 | End-to-end network testing The invention includes a system and a method for testing a communication network. The inventive method transmits a first signal from a first point to a second point of the communication network, where the first and the second points are remotely located. The inventi... | 12/19/2006 |
| 7132613 | Methods, systems, and terminals for load coil switching A method for constructing a transmission line unit such that load coils can be selectively connected to a transmission line includes providing a transmission line section having a transmission line and a plurality of load coils electrically connected thereto, and co... | 11/07/2006 |
| 7127041 | Simultaneous tracing of multiple phone/data cables For tracing multi-conductor cable runs from multiple phone/data locations throughout a building or complex to a junction facility where the cables need to be systematically identified and connected to a terminal panel, rapid tracing and identification are accomplish... | 10/24/2006 |
| 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 |
| 7088733 | Cable modem termination system for upstream frequency band The selection of which channel to use by a cable modem terminating system (CMTS) is made a function of input supplied by a spectrum analyzer. Note that typically the cable distribution system has coupled to it at the head end not only the CMTS but also a spectrum an... | 08/08/2006 |
| 7082299 | Testing loops for channel codecs A method for determining the performance of decoding in a telecommunication system having a decoder and a testing apparatus for supplying test data to the decoder includes generating test data having signalling data in a signalling frame format, mapping the test dat... | 07/25/2006 |
| 7075981 | Dynamic quality of service monitor A subjective quality monitoring system for multimedia signal transmission systems or distributed applications software systems employs a counter which is increased if subjective quality is high and decreased if subjective quality is low in order to represent the eff... | 07/11/2006 |
| 7072391 | Adjustment of transmit power based on an estimated electrical length of a loop To adjust transmit power of a DSL modem, an estimated electrical length of a loop is first determined when a 1st DSL modem at a 1st location transmits a plurality of signals to a 2nd DSL modem at a 2nd location. Each of th... | 07/04/2006 |
| 7023963 | DSL line card echo canceler-based mechanism for locating telecommunication line fault A digital subscriber loop line card-installed mechanism conducts parametric measurements on the wireline to which the line card is connected, and adjusts taps of an echo cancellation operator in accordance with the response of the wireline to an electrical stimulus ... | 04/04/2006 |
| 7020164 | System and method for special signaling with customer premises equipment A system and method are provided for special signaling with customer premises equipment. The system includes loop termination equipment coupled to a local loop and comprising a signal generator. The system also includes customer premises equipment coupled to the loc... | 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 |
| 7003078 | Method and apparatus for telephone line testing A method and apparatus for qualifying a telephone transmission line for XDSL communication services is disclosed. The system includes a modem, located at the customer premises to be connected. The modem analyzes actual signals to determine the electrical characteris... | 02/21/2006 |
| 6999526 | Method for simple signal, tone and phase change detection A method for detecting an information signal, tone and/or a phase change of a tone in one or more signals which contain inter alia this information signal or this tone, is characterised in that each signal is divided into segments (blocks), in that only a selection ... | 02/14/2006 |
| 6977898 | Method for supporting high priority calls on a congested WAN link A network node is configured to negotiate for connections for high priority calls (e.g., voice calls) received at the node in the face of otherwise congested outbound communication links. The negotiation is conducted in a fashion that will preserve connections for e... | 12/20/2005 |
| 6973403 | Method and system for identification of system response parameters for finite impulse response systems Methods and systems for determining characteristics of a Finite Impulse Response system that can include applying a number of identical sets of probe signals to the system and averaging the observed outputs. A discrete Fourier transform (DFT) of the averaged outputs... | 12/06/2005 |
| 6965638 | Increasing performance in modems in presence of noise A digital communications system with a built-in apparatus for improving receive path performance in the presence of noise. An analog datastream is provided to a hardware receive filter that rejects signals lying outside a frequency spectrum of interest, while a hard... | 11/15/2005 |
| 6963192 | Device for tracing electrical cable A device for tracing electrical cable. The device allows a cable installer or service person not only to identify one wire or cable in a group, but to simultaneously remotely identify as many cables as he desires. The device requires only that the installer connect ... | 11/08/2005 |
| 6959069 | Method for testing subscriber line of private automatic branch exchange using dual-tone multi-frequency signal A method for testing a subscriber line of a PABX (Private Automatic Branch eXchange) using a DTMF (Dual-Tone Multi-Frequency) signal. The method includes the step of controlling a DTMF transmitter in response to a line test request from an exchange operator to trans... | 10/25/2005 |
| 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 |
| 6950497 | Fault location in a telecommunications network A fault is located along a telecommunications line between the network terminating equipment and the local exchange by measuring a change in the capacitance of the line when compared with the capacitance under normal operating conditions. A geographical information ... | 09/27/2005 |
