| Patent Number |
Title Of Patent |
Date Issued |
| D577706 |
IP phone |
September 30, 2008 |
|
| D464958 |
Housing assembly for communications equipment |
October 29, 2002 |
|
| D435041 |
Communications equipment enclosure |
December 12, 2000 |
|
| 7624314 |
Echo canceler-based mechanism for performing and reporting fault diagnostic testing of repeatere |
November 24, 2009 |
| A repeater-installed fault location mechanism conducts parametric measurements on a segment of wireline to which the repeater is connected, and adjusts taps of an echo cancellation operator in the repeater transceiver equipment, in accordance with the response of the wireline to an e |
| 7609817 |
Termination circuit for network interface unit |
October 27, 2009 |
| A network interface unit has an interface coupled to a first transmit line and a first receive line, and the interface is configured to receive a signal from the first receive line. The network interface unit further has circuitry operable in a test mode and a data mode that couples the |
| 7593494 |
System and method for canceling impulse noise |
September 22, 2009 |
| A system for canceling impulse noise comprises an adaptive impulse canceler and a combiner. The adaptive impulse canceler is configured to receive a common mode component of a received signal and to detect a noise impulse in the common mode component. The impulse canceler is further |
| 7590921 |
Data communication system and method |
September 15, 2009 |
| A data communication system has a plurality of communication transceivers respectively coupled to a plurality of communication lines and is configured to receive payload symbols and parity symbols. The system further has logic configured to transition from non-erasure decoding to era |
| 7577088 |
System and method to backup communication occurring across a plurality of subscriber lines |
August 18, 2009 |
| A communication system comprises a plurality of transceivers and logic. A first transceiver is configured to communicate via a first subscriber line with a transceiver located at a remote premises. A second transceiver is configured to communicate via a second subscriber line with a |
| 7570603 |
Routing switch detecting change in session identifier before reconfiguring routing table |
August 4, 2009 |
| An automatic network topology identification technique is described herein. Each node in the network periodically or constantly transmits its unique address to its neighboring node. Once a node receives a different message from its neighbor, the node identifies a topology change in the |
| 7564898 |
System and method for selecting data rates of data signals |
July 21, 2009 |
| A transceiver comprises a communication line interface, memory, and logic. The memory stores predefined noise spectra, and the logic is configured to analyze an initialization signal received from the communication line coupled to the communication line interface during an initialization |
| 7561088 |
Multi-loop data weighted averaging in a delta-sigma DAC |
July 14, 2009 |
| Methods and apparatuses enable generating an analog representation of an M-bit digital input. A DAC system receives the M-bit data word and generates a control signal to control the output elements of a DAC to output an analog representation of the input data word. The DAC includes t |
| 7554997 |
Integrated router switch-based port-mirroring mechanism for monitoring LAN-to-WAN and WAN-to-LAN |
June 30, 2009 |
| An integrated processor-controlled router and switch fabric architecture provides connectivity between local area network (LAN) ports of an Ethernet switch serving a plurality of local area network users and a wide area network (WAN) port that provides connectivity with the internet. |
| 7554994 |
Integrated router switch containing mechanism for automatically creating IEEE 802.1Q VLAN trunks |
June 30, 2009 |
| An integrated processor-controlled router and switch fabric architecture provides connectivity between local area network (LAN) ports serving a plurality of local area network users and a wide area network (WAN) port that provides connectivity with the internet. IEEE 802.1Q virtual local |
| 7545830 |
Defragmented packet analysis for differential priority routing |
June 9, 2009 |
| A packet analysis-based mechanism ensures the transmission of critical (voice) frames distributed among a sequence of fragmented frames of data signals. Received fragmented frames are analyzed to derive fragmented frame size information representative of the fragmented frame size. The |
| 7545828 |
Efficient AAL5-based mechanism for handling voice ATM cells to significantly reduce CPU load |
June 9, 2009 |
| A mechanism for implementing a single-interrupt-based voice playout buffer transfer operation. The contents of each respective channel of a multi-channel voice playout buffer are encapsulated so as to prepend a four byte ATM header, a HEC byte, and a four byte AAL2 header to a forty- |
| 7545755 |
Routing switch detecting change in session identifier before reconfiguring routing table |
June 9, 2009 |
| An automatic network topology identification technique is described herein. Each node in the network periodically or constantly transmits its unique address to its neighboring node. Once a node receives a different message from its neighbor, the node identifies a topology change in the |
| 7539479 |
Use of T1 facility data link to transport status and configuration data packets for loop-powered |
May 26, 2009 |
| In order to configure and monitor the operation of a span-powered T1 radio, use is made of the out-of-band facility data link channel that is available within an extended superframe of the T1 digital data stream transported between an indoor carrier services unit and the T1 framer of |
| 7539298 |
Passive termination for redundant telecommunication receivers connected to a single twisted pair |
May 26, 2009 |
| A wireline termination arrangement bridges a telecommunication wireline pair of a telecommunication system equipment backplane with a termination resistor. The backplane adjoins a plurality of card slots. A first end of the termination resistor installed in the backplane is connected to |
| 7539142 |
Ethernet LAN interface for T3 network |
May 26, 2009 |
| A differential time domain digital communication bridge module interfaces 100 Mbps Ethernet traffic with a T3 communication link, using a relatively small sized data buffer. To avoid dropping packets, the relatively large sized buffer in the Ethernet switch is used to temporarily sto |
| 7533159 |
Selective flooding in a multicast network |
May 12, 2009 |
| A system and method for selective flooding in a multicast network are disclosed. Some embodiments provide for a promiscuous mode device on a network to signal to one or more other devices on the network that the promiscuous mode device is operating in promiscuous mode. In response to |
| 7515591 |
Primary channel bank-resident mechanism for scheduling downstream data transmissions to ports of |
April 7, 2009 |
| A data transmission scheduler subsystem for a multi-channel bank communication system architecture contains a plurality of `per port` schedulers. Each per port scheduler is resident in the system's primary channel bank, and is operative to controllably cause customer-destined data, t |
| 7512121 |
T1 grooming translation of yellow alarms |
March 31, 2009 |
| An alarm indication translation mechanism in a digital access and cross-connect system monitors all incoming tributary DS1 streams for the presence of an alarm indication. Whenever an alarm indication is detected in a fractional tributary DS1 data stream, all DS0 bytes within the T1 |
| 7508930 |
Technique for independent ground fault detection of multiple twisted pair telephone lines connec |
March 24, 2009 |
| A method and apparatus detects a ground fault on a span-powered telecommunication wireline within a plurality of span-powered wireline segments, to respective ones of which DSL-Cs are coupled, so that a ground fault may be detected when power is delivered by the DSL-C over a respecti |
| 7483481 |
System and method for adaptively updating precoder taps |
January 27, 2009 |
| A system for adaptively updating precoder taps comprises a first signal path, a second signal path, a delay mechanism, and logic. The first signal path is configured to receive encoded signals. The first signal path has a decoder that is configured to decode the encoded signals there |
| 7478029 |
Cable simulation device and method |
January 13, 2009 |
| A cable simulator that comprises an input device configured to receive a communication signal. The cable simulator further comprises a circuit configured to simulate attenuation in both the differential mode and common mode components of a communication signal. |
| 7477596 |
Policing engine providing dynamic adjustment of peak and sustained data cell rates and efficient |
January 13, 2009 |
| A policing engine for use in a telecommunication equipment shelf is operative to control the rate at which customer-sourced ATM packets are passed to buffers associated with different classes of service to which customers may subscribe. The policing engine examines the rate at which |
| 7476126 |
Clip-based fastening arrangement for attaching multi-pin connector to rear panel of electronic e |
January 13, 2009 |
| A clip is attachable to a flange of a connector terminating an electrical cable, and is configured to mechanically couple one side of the flange to an edge of a connector-installation aperture of a chassis, such that a distal end of the connector may engage a receptacle within the chassi |
| 7471931 |
System and method for controlling transceivers based on a location indicator |
December 30, 2008 |
| A system for controlling transceivers based on a location of the transceivers, as indicated by a location indicator, helps to reduce crosstalk interference in signals transmitted from central offices. The system utilizes a location indicator and logic. The location indicator is commu |
| 7460498 |
System and method for detecting anomalies along telecommunication lines |
December 2, 2008 |
| An anomaly detection system comprises an echo canceler and anomaly detection logic. The echo canceler has a plurality of taps respectively associated with a plurality of tap coefficients. The anomaly detection logic is configured to determine a difference between a new tap coefficien |
| 7457234 |
System and method for protecting communication between a central office and a remote premises |
November 25, 2008 |
| A data communication system for communicating between a central office and a remote premises comprises a first transceiver, a second transceiver, and control logic. The first transceiver is coupled to a first communication connection extending from the central office to the remote pr |
| 7433365 |
System architecture for linking channel banks of a data communication system |
October 7, 2008 |
| A single switch fabric-based, multi-channel bank digital subscriber line access multiplexer includes a master channel bank containing a master switch module in which the switch fabric and a downstream-directed traffic scheduler reside, and one or more expansion channel banks that are |
| 7375940 |
Transformer interface for preventing EMI-based current imbalances from falsely triggering ground |
May 20, 2008 |
| A transformer interface prevents a false ground fault interrupt in a power supply arrangement. The power supply arrangement has a line wire and a neutral wire connected by way of a ground fault interrupt circuit to an electrically powered device, to which a ground wire is also coupled. T |
| 7366179 |
Dual-PHY based integrated access device |
April 29, 2008 |
| A dual PHY-based integrated access device (IAD) platform employs a highly integrated time division multiplexed (TDM), a synchronous transfer mode (ATM) cell based architecture, to provide enhanced interfacing flexibility for multiple and diverse signaling protocols, effectively reduc |
| 7366161 |
Full duplex voice path capture buffer with time stamp |
April 29, 2008 |
| For diagnostic and trouble-shooting purposes, an audio/voice signal capture mechanism is adapted to be interfaced with a time division multiplexed (TDM) transport path-cascaded echo canceler and compression arrangement for an integrated access device (IAD). The audio/voice signal cap |
| 7349420 |
Method and system for preserving channel bank provisioning information when unit location change |
March 25, 2008 |
| An inter-channel bank addressing and identification protocol, for use with a multi channel bank, digital subscriber line access multiplexer (DSLAM), enables the control processor of a master channel bank to selectively communicate with control processors of subtended slave channel banks, |
| 7349327 |
System and method for remotely updating a network device |
March 25, 2008 |
| A router in one embodiment of the present disclosure has first router logic and boot logic. The first router logic is configured to operate the router, and the boot logic is configured to receive updated router logic from a network and to perform a first reboot. The boot logic is further |
| 7305042 |
T1 radio having coding gain adjustable for number of channels |
December 4, 2007 |
| A communication system for transmitting (T1) digital communication signals between a transmit site and a receiver site includes an M:1 multiplexer, coupled to a rate 1/N convolutional encoder, which is operative to output an encoded output signal modulated in quaternary phase shift keyed |
| 7302047 |
Method of detecting remote ground condition |
November 27, 2007 |
| Whether or not protection circuitry for a span-powered remote digital subscriber loop unit is properly connected to earth ground is determined by the deliberate assertion and detection of a ground fault from a central office line card location. The span-powered remote unit is augment |
| 7295560 |
Method and apparatus of inter-chip bus shared by message passing and memory access |
November 13, 2007 |
| A system of switches having a memory/command bus having a first interface, a second interface and a third interface. A memory is connected to the third interface of the memory/command bus. The memory has a first memory address. A first switch monitors the memory/command bus and interpret |
| 7289532 |
Voice playout buffer for dual-PHY based integrated access device |
October 30, 2007 |
| A voice playout buffer for a dual PHY-based integrated access device platform has a plurality of voice signal buffer sections. A respective buffer section has a capacity in excess of the number of digitized voice signal bytes contained in a respective cell-based communication signal. |
| 7289448 |
Path engine for optical network |
October 30, 2007 |
| A method and system for selecting ring paths in service provisioning on optical networks including a plurality of interconnected rings. The method includes: receiving a request to provision a service between a first end point and a second end point in the optical network; identifying |
| 7283514 |
Programmable network-DTE interface containing selectively enabled T1/E1 framed, data pump and mi |
October 16, 2007 |
| A programmable network-DTE interface integrates T1/E1 framer, data pump and microprocessor components into a common subsystem chip architecture, and interfaces each of these components by means of a user programmable multiplexing subsystem, so as to allow any of the functional blocks of |
| 7266092 |
Adaptive frequency duplexing system and method |
September 4, 2007 |
| A communication system and method adaptively control frequency ranges of a pair of interconnected transceivers in an effort to enhance the data rate in one direction. In this regard, a full duplex communication session is established between a first transceiver and a second transceiver. |
| 7262664 |
Circuit and method for controlling quiescent current of an amplifier |
August 28, 2007 |
| Typical amplifier circuits used to implement various type of power amplifiers, including line drivers, are capable of supplying high output currents while maintaining a low standby current. Variation in the manufacturing process, however, can lead to large variations in quiescent cur |
| 7212598 |
Data buffer-controlled digital clock regenerator |
May 1, 2007 |
| A clock regeneration scheme for a digital communication receiver has a first-in, first-out (FIFO) storage buffer into which received data is clocked in accordance with an input clock signal and a data valid signal. A fixed fractional delay line is coupled to provide respectively diff |
| 7212548 |
Multiple T1 channel inverse multiplexing method and apparatus |
May 1, 2007 |
| At a transmit site of an inverse multiplexing system, an input demultiplexer demultiplexes high bandwidth serial communication signals (e.g., fractional T3 rate signals) into communication signal packets for transmission over reduced bandwidth serial communication (e.g. T1) channels. |
| 7203197 |
Method and apparatus for interfacing utopia bus with serial TDM channel transporting ATM data |
April 10, 2007 |
| A bidirectional serial TDM backplane--UTOPIA interface contains an ATM cell boundary location and transmit flow control mechanism, to provide for the efficient capture and storage of ATM cells from a serial TDM channel. Once stored in a transmit buffer, individual ATM cells are contr |
| 7203159 |
Line card-sourced ESF framing protection switch FDL signaling |
April 10, 2007 |
| A back-up channel line card-installed ESF framing mechanism independently sources an FDL signaling channel for the transport of protection switch signaling information, taking advantage of the fact that DSL multiplexer equipment is capable of accepting and processing ESF framed digital d |
| 7185115 |
Modular system for connecting multiple customer premises voice and data communications devices t |
February 27, 2007 |
| An integrated system concurrently connects voice and data communications devices used by small and medium sized businesses to a network T1 data line terminating at the customer premises. A system chassis includes multiple slots and backplane connectors for removably receiving a bank |
| 7180870 |
ISDN terminal equipment-resident mechanism for determining service profile identifiers and assoc |
February 20, 2007 |
| The inability of an ISDN equipment user to properly configure ISDN terminal equipment, even when provided with correctly assigned switch protocol, SPID and LDN parameters by a telephone service provider, is successfully remedied by a SPID/switch protocol detector. Upon being invoked |
