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| Number | Title | Issue Date |
| 8150026 | Method and system for subscriber line interface circuit A subscriber line interface circuit apparatus includes a linefeed circuit and a subscriber line control circuit (SLCC). In an embodiment, the linefeed circuit includes a signal conversion circuit which provides a differential mode signal and a common mode signal in ... | 04/03/2012 |
| 7804954 | Infrastructure for enabling high quality real-time audio Various technologies and techniques are disclosed that improve media communications. In one embodiment, a media server receives a media communication with a first quality from a personal computer with VoIP telephone capabilities. The media server translates the medi... | 09/28/2010 |
| 7664253 | Main terminal and a method of operating the same A main terminal and a method of operating the same. In this method of operating the main terminal, the main terminal is connected to a telephone network so as to communicate with the telephone network, and selectively connects an external terminal to the telephone n... | 02/16/2010 |
| 7463732 | Flexible data outlet A flexible data outlet includes a housing configured for placement in an operating area of a user, such as on a wall adjacent to a user's work space. User interface circuitry in the housing provides an interface to user equipment located in the user operating area, ... | 12/09/2008 |
| 7362841 | Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with switchable DC termination impedance A digital direct access arrangement (DAA) circuitry may be used to terminate the telephone connections at the user's end that provides a communication path for signals to and from the phone lines. Briefly described, the DAA provides a programmable means for the DC t... | 04/22/2008 |
| 7355416 | Measurement of cable quality by power over ethernet A method of determining impedance comprising: supplying power to a powered device from a power sourcing equipment at a first current limited level, Ilim1; measuring, at a plurality of times a voltage associated with the output of the power sourcing equipm... | 04/08/2008 |
| 7352776 | Line terminator unit for a subscriber line The invention relates to a line terminating device for a subscriber line which transmits and receives broadband signals via a single subscriber line, a broadband signal being composed of a broadband or narrowband audio-frequency data signal and a broadband higher-fr... | 04/01/2008 |
| 7333475 | Switchboard for multiple data rate communication system A switchboard device and methods of operation of same are disclosed. Embodiments of the invention may provide a flexible means of interconnecting wideband and narrowband communications interfaces, where wideband communications interfaces may transfer low-band data a... | 02/19/2008 |
| 7327670 | Method for reliably recovering signaling system seven (SS7) user part message packets in response to a socket failure Methods and systems for transmitting user part messages between signaling system seven (SS7) signaling points over an internet protocol (IP) network include receiving, at a signal transfer point, a first SS7 user part message. The first SS7 user part message can be ... | 02/05/2008 |
| 7324632 | Distribution device in a data signal processing installation, and data signal processing installation The invention relates to a distribution device (2) in a data signal processing installation (1), and a data signal processing installation (1). The distribution device comprises a distribution block (3) which has a receiving device contai... | 01/29/2008 |
| 7317793 | Method and system for providing DC power on local telephone lines A system for providing DC power on local telephone lines, such as telephone lines in a building or office, for powering devices and circuitry associated with communications over those telephone lines, as well as other functions. Desired voltage and power levels are ... | 01/08/2008 |
| 7305006 | System for allowing a single device to share multiple transmission lines A front end, such as can be used in a Home Phoneline Networking Alliance network, may connected to a plurality of transmission lines. Each of the plurality of transmission lines may connected to one or more devices, such as a plain old telephone service device or an... | 12/04/2007 |
| 7301995 | Direct digital access arrangement circuitry and method for connecting to phone lines An isolation system is provided that is suitable for use in telephony, medical instrumentation, industrial process control and other applications. Preferred embodiments of the invention comprise a capacitive isolation barrier across which a digital signal is communi... | 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 |
| 7283584 | Direct digital access arrangement circuitry and method for connecting to phone lines An isolation system is provided that is suitable for use in telephony, medical instrumentation, industrial process control and other applications. Preferred embodiments of the invention comprise a capacitive isolation barrier across which a digital signal is communi... | 10/16/2007 |
| 7280062 | Pulse metering architecture In one embodiment, a subscriber line interface circuit includes circuitry to generate metering pulses for insertion onto a subscriber line. The circuitry includes a cascaded digital-to-analog converter (DAC) structure including a first DAC to convert a digital sine ... | 10/09/2007 |
| 7266084 | Method and arrangement for maintaining and updating network element configuration in an xDSL network, and an xDSL network element A method and arrangements are disclosed for distributing configuration information in an xDSL network that comprises network elements on certain hierarchical levels and a network managing station. There is transmitted a request for configuration information from a f... | 09/04/2007 |
| 7263646 | Method and apparatus for skew compensation A method that measures a skew between a data signal and a clock signal at a receiving end of a serial link and then adjusts a phase relationship between the data signal and the clock signal to reduce the skew. ... | 08/28/2007 |
| 7260212 | Method and apparatus for subscriber line control circuit A subscriber line interface circuit apparatus includes a linefeed circuit and a subscriber line control circuit (SLCC). In an embodiment, the linefeed circuit includes a signal conversion circuit which provides a differential mode signal and a common mode signal in ... | 08/21/2007 |
| 7257758 | Stumping mechanism An Infiniband device can have an input port operable to receive a packet and to forward the packet to an output port of the device for onward transmission toward an ultimate destination of the packet. The input port can also be operable to examine at least a header ... | 08/14/2007 |
| 7254230 | Subscriber line interface circuitry A subscriber line interface circuit apparatus includes a signal processor having sense inputs for sensed tip and ring signals of a subscriber loop. The signal processor generates linefeed driver control signals in response to the sensed signals. A linefeed driver pr... | 08/07/2007 |
| 7243286 | Method and apparatus for generating parity information for error correction A method of generating error correction parity information using a parity check matrix having m rows and n columns, wherein m is a number of parity bits and n is a number of codeword bits, wherein a same fixed number of elements in each of the rows has a value of 1 ... | 07/10/2007 |
| 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 |
| 7239695 | Method and apparatus for detecting line card threshold A method and apparatus is provided. The method includes transmitting a signal having an AC component to a subscriber line and receiving at least a portion of the transmitted signal from the subscriber line. The method includes determining at least a portion of a per... | 07/03/2007 |
| 7215764 | Current sensing echo cancellation device A passive echo cancellation circuit for reducing echoes on a subscriber line includes an output driver adapted to drive a downstream signal on the subscriber line. First sensing circuitry is coupled to the output driver and adapted to sense a current on the subscrib... | 05/08/2007 |
| 7200167 | Direct digital access arrangement circuitry and method for connecting to phone lines An isolation system is provided that is suitable for use in telephony, medical instrumentation, industrial process control and other applications. Preferred embodiments of the invention comprise a capacitive isolation barrier across which a digital signal is communi... | 04/03/2007 |
| 7191378 | Method and system for providing low density parity check (LDPC) encoding An approach is provided for a method of encoding structure Low Density Parity Check (LDPC) codes. Memory storing information representing a structured parity check matrix of Low Density Parity Check (LDPC) codes is accessed during the encoding process. The informati... | 03/13/2007 |
| 7187686 | Telecommunication system, method and subscriber unit for use therein A telecommunication system includes a digital switch, a local loop coupling the digital switch to a subscriber location, wherein a segment of the local loop includes copper twisted pair and wherein an asymmetrical digital subscriber line is carried by the local loop... | 03/06/2007 |
| 7184543 | Method and circuit arrangement for controlling a subscriber line interface circuit The invention provides a method for controlling a subscriber line interface circuit, which is connected to at least one data line and to at least one subscriber line associated with a subscriber, in the on-hook state, having the following steps: on-hook data transmi... | 02/27/2007 |
| 7181676 | Layered decoding approach for low density parity check (LDPC) codes A method of decoding in layers data received in a communication system, comprising receiving a codeword containing a plurality of elements and translating the plurality of elements into probability values by dividing the rows of at least one column of a parity check... | 02/20/2007 |
| 7180998 | Regulator for impedance balance of a transmission wire pair The present invention relates to a regulator for impedance balancing of first (104) and second wires (106) of a transmission wire pair having respective first and second impedances, the regular comprising: means (1... | 02/20/2007 |
| 7167557 | Subscriber line interface circuit (SLIC) including a transient output current limit circuit and related method A subscriber line interface circuit (SLIC) for a subscriber loop includes a pair of output amplifiers for connection to the subscriber loop and a transient output current limit circuit. The transient output current limit circuit may have at least one programmable ou... | 01/23/2007 |
| 7164708 | Line termination device for a telephone subscriber line In the line terminating device, which is provided for transmitting and receiving narrowband low-frequency voice signals and broadband data signals at a higher frequency, the analog reception path is subdivided into two separate analog paths (32, 33) for voice... | 01/16/2007 |
| 7162029 | Gain or input volume controller and method utilizing a modified R2R ladder network A gain or input volume controller and method includes a modified R2R ladder network having a number of R2R branches, switches coupled respectively to the R2R branches, and a switch controller for respectively controlling the switches to control and provide an overal... | 01/09/2007 |
| 7142501 | Method and apparatus for eliminating near-end crosstalk in a digital subscriber line system A method and apparatus for eliminating near-end crosstalk in a communication network are disclosed. Crosstalk generated by communication occurring on a second line is detected on a first line and the phase of the crosstalk detected on the first line is determined. A... | 11/28/2006 |
| 7127043 | Secondary subscriber line override system and method A method and system of utilizing a secondary telephone line service, and in one embodiment encompasses analyzing a dialing sequence to convert from utilizing the secondary telephone line service to utilizing a primary telephone line service without the use of a manu... | 10/24/2006 |
| 7110531 | Isolation system with analog communication across an isolation barrier An isolation system with analog communication across an isolation barrier includes an isolation barrier circuit having at least one isolation element; a digital to analog circuit having an analog output connected to the isolation barrier and an input for receiving a... | 09/19/2006 |
| 7099707 | Method and system for providing power to a communications device Embodiments of the present invention relate to apparatus and methods to provide power to a communications unit. In one embodiment of the present invention, a system includes a first communications network to engage in communications with the communications unit and ... | 08/29/2006 |
| 7099313 | Replaceable printed board assembly (PBA) A separately replaceable printed circuit board or card for use in a shelf of a telecommunications system with plural twisted pairs connected to corresponding plural subscribers via said card, each subscriber channel on each card including a low pass filter connected... | 08/29/2006 |
| 7095847 | DC/DC converter and subscriber line interface circuit A DC/DC converter capable of preventing abnormal temperature increase in a power transistor. The DC/DC converter comprises a loop circuit, a power transistor, an abnormal high temperature detection circuit, and an abnormality processing circuit. The power transistor... | 08/22/2006 |
