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| Number | Title | Issue Date |
| 8184778 | Line measurement method and measurement apparatus A line measurement method is provided. The method includes obtaining data of relation between a line length and an insertion loss phase radian, and obtaining data of relation between the line length and a loop attenuation parameter value; obtaining four length value... | 05/22/2012 |
| 8081736 | Method and apparatus for measuring electrical properties of communication lines A method and an apparatus for measuring electrical properties of communication lines is presented, wherein the communication line comprises a first line and a second line, wherein the first line is connected to a first line driver and the second line is connected to... | 12/20/2011 |
| 7720201 | Communication apparatus In a communication apparatus has a line control unit that controls connection with a communication line network, a communication unit transmits/receives data through the communication line network. A detection circuit detects one of a line voltage value and a line c... | 05/18/2010 |
| 7602885 | Automatic provisioning of a telephone line test system A telephone line test system that may be used to compute line length of subscriber lines connected to a central office or other distribution point. When initially installed, the test system may automatically compute CO limits. The CO limits are computed from single-... | 10/13/2009 |
| 7450693 | Method and device for improving voice quality on transparent telecommunication-transmission paths A method and a device for improving voice quality on transparent telecommunications-transmission paths. The audio-transmission channel is adapted to the respective audio-spectrum of the speaker at predetermined intervals. As a result, means for analyzing the voice s... | 11/11/2008 |
| 7440552 | Fault detection method and apparatus for telephone lines A method and apparatus for detecting faults on a telephone line, the method comprising: comparing measured characteristics of the line with a model, said model modeling expected characteristics of the telephone line; and in response to the comparison, generating a f... | 10/21/2008 |
| 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 |
| 7400710 | MIMO dynamic PSD allocation for DSL networks A system and method for multiple inputs, multiple outputs (MIMO) PSD allocation in a DSL system is disclosed. In some embodiments, the method may comprise monitoring system performance by performing a multi-ended line test (MELT), processing the MELT and allocating ... | 07/15/2008 |
| 7369826 | Method for monitoring broadcast signals at alternative frequencies and gain control unit Many broadcast stations transmit their programs via a variety of different frequencies. The invention relates to monitoring alternative frequencies during the reception of a broadcast signal at a present frequency. Whenever the broadcast signal at an alternative fre... | 05/06/2008 |
| 7362850 | Method and arrangement for estimation of line properties The length and attenuation of a signal line between a transmitter and a customer premises equipment is to be estimated. A frequency dependent line input impedance (Zin(f)) as seen from the transmitter, is measured and an absolute impedance value (œ Z | 04/22/2008 |
| 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 |
| 7295654 | Digital kick meter and graphical user interface (GUI) A digital kick meter measures capacitive kick between two conductors and ground of a cable. The digital kick meter includes a resistance measuring circuit connectable to two of the conductors to provide a signal indicative of a capacitance between the two conductors... | 11/13/2007 |
| 7285992 | Amplifier with charge-pump generated local supplies An amplifier system includes a follower-type output stage that is driven by a pre-driver circuit. The follower-type output stage that is operated from VCC and GND (or VEE) power supplies. The pre-driver circuit for the follower output stage is operated from local po... | 10/23/2007 |
| 7272209 | Automated DSL performance adjustment The present application discloses an automated digital subscriber line performance control system comprising a computer system including a logic module to evaluate performance of a plurality of DSL lines and to automatically select a set of DSL lines from the plural... | 09/18/2007 |
| 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 |
| 7254217 | Fault characterization using information indicative of echo A fault associated with a communication medium is analyzed by correlating a first set of information indicative of echo associated with the communication medium with a second set of information indicative of echo. The fault is characterized based on the correlation ... | 08/07/2007 |
| 7245701 | System and method for verifying central office wiring associated with line sharing A system and method for verifying the integrity of a DSL circuit on a shared telephone line. The invention uses the amplitude modulation principles to overcome the difficulty associated with a blocking capacitor that isolates a DSLAM on the DSL circuit from the rest... | 07/17/2007 |
| 7242761 | System and method for determining the transmit power of a communication device operating on digital subscriber lines A system for determining the transmit power of a communication device operating on a twisted pair subscriber line includes a communication server coupled to a first subscriber line and a second subscriber line. The communication server comprises a communication devi... | 07/10/2007 |
| 7239687 | Telecommunications When delivering a broadband service, such as xDSL, without inband POTS, it is necessary to separate the analogue POTS signal and the xDSL signal from each other at both the CO (Central Office) and the CP (Customer's Premises). This can be achieved by using an active... | 07/03/2007 |
| 7224793 | Communication set with detection of set function and line condition A description is given of a communication set for connection to a communication line such as a telephone line, which communication set includes means for detecting set functions such as ringing signal detection, and a rectifier circuit which is connected to a common... | 05/29/2007 |
| 7225096 | Method of controlling and correcting an asymmetric waveform Disclosed is a method of controlling an asymmetric waveform generated as a combination of two sinusoidal waves having a frequency that differs by a factor of two. A method according to the instant invention includes a step of sampling a generated asymmetric waveform... | 05/29/2007 |
| 7221259 | Electronic label interrogation through incidental electromagnetic radiation A system for electromagnetically interrogating electronically coded labels is provided. The system includes at least one electromagnetically interrogatable electronic coded label, an interrogator containing a generator of electromagnetic interrogation signals and a ... | 05/22/2007 |
| 7164753 | Real-time transcription correction system A voice transcription system employing a speech engine to transcribe spoken words, detects the spelled entry of words via keyboard or voice to invoke a database of common words attempting to complete the word before all the letters have been input. This database is ... | 01/16/2007 |
| 7154856 | Multiplexing apparatus and cell discard method A multiplexing apparatus selectively performs cell discard processing in the case of congestion on the basis of a use state of the same connection formed by cells from the side of a switching unit and subscribers without installing UPC units, and the multiplexing ap... | 12/26/2006 |
| 7149285 | Dynamic, automated double-ended system and method for testing and qualifying metallic telecommunication loops A multi-unit test system performs automated and dynamically alterable, double-ended testing of telephone lines, whose service is provided on copper cable pairs. A prescribed set of (e.g., twelve) individual tests are executed either from a hand-held measurement unit... | 12/12/2006 |
| 7079852 | Method and device for improving audio quality in a mobile radio network A method and a device for improving audio quality in a mobile radio network that enables audio quality to be improved in mobile radio networks independently from the terminal(s) includes an equalizer connected to the audio path assigned to be the communication link,... | 07/18/2006 |
| 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 |
| 7061857 | System and method for fault isolation for DSL loop extenders A system and method are disclosed to implement fault detection in DSL loop extenders. The system of the invention includes a plurality of loop extenders coupled to a local loop, a loop extender (LE) test box coupled to the local loop, and fault detection circuitry c... | 06/13/2006 |
| 7058305 | Optical submarine communication system and surge suppressing apparatus of the optical submarine communication system An optical submarine communication system has a land cable connected to a terminal apparatus which is installed on land near the seashore for transmitting an optical signal and electric power. The land cable is connected to an optical submarine cable through a beach... | 06/06/2006 |
| 7042983 | Method and apparatus for bridged tap impact analysis A method and system for qualifying telephone lines for high speed data services. The system takes measurements on a line under test and matches those measurements to a model of a line. The model of the line is used to predict whether the line will support data servi... | 05/09/2006 |
| 7035400 | Signaling Techniques in channels with asymmetric powers and capacities An improved system and method for communicating information on a transmission medium is disclosed. The disclosed system and method provide improved communications on the transmission medium in the presence of interference, which may take the form of uncorrelated int... | 04/25/2006 |
| 7031458 | Method and apparatus for isolation in a data access arrangement using analog encoded pulse signaling The present invention is directed toward a method and apparatus for transferring data across an isolation barrier using high speed analog encoded signals. A line side circuit interfaces with tip and ring contacts on one side of a capacitive isolation barrier that is... | 04/18/2006 |
| 7027562 | System and method to reduce echoes in voice communications A system and method to reduce echoes in voice communications are described. Input data containing return loss values of a communication trunk within a communications network is received, the return loss values being measured at each frequency of a plurality of frequ... | 04/11/2006 |
| 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 |
| 7006520 | System and method of operation for managing data communication between physical layer devices and ATM layer devices A system for managing data communication between physical layer devices and ATM layer devices in a cell based ATM network is disclosed. A plurality of low speed physical layer devices a high speed physical layer device are connected to a bus. A bus interface device ... | 02/28/2006 |
| 6998852 | Method and apparatus for implementing direct attenuation measurement through embedded structure excitation A method and apparatus are provided for implementing direct attenuation loss measurement in an electronic package. A sinusoidal voltage source signal of a selected frequency is coupled to an embedded transmission line test structure in the electronic package. Receiv... | 02/14/2006 |
| 6959860 | System for automatic connection to a network A computer system (10) that allows a user to automatically access one of a plurality of Internet Service Providers which require information specific to the user and/or the ISP (12) to be accessed. A smart card (14) contains the information spec... | 11/01/2005 |
| 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 |
