Abstract: A communication comprises a plurality of digital subscriber line (DSL) links, a first node having at least one application port configured for an elastic service and a plurality of DSL ports, and a second node having at least one application port configured for an elastic service and a plurality of DSL ports. Each of the first and second nodes is configured to interleave data received over the at least one application port across the plurality of DSL ports, each DSL port allocated a set of DSL timeslots for transport of the data received over the at least one application port. When a failure is detected on one of the DSL links, each of the first and second nodes is configured to interleave the data received over the at least one application port across the remaining DSL ports not connected to the failed DSL link without adjusting the set of DSL timeslots allocated to each of the remaining DSL ports for transport of the data from the at least one application port.

Abstract: A remote enclosure houses multiple subsystems. A first subsystem is coupled to a central office over a high-speed communication channel such as an OC-3 channel. The first subsystem extracts a downstream message from a first embedded operations channel included in the high-speed communication channel. The first subsystem also, when the downstream message is targeted to a first unit included in the first subsystem, forwards the message to a unit that processes the message for the first unit. When the message is not targeted to any unit included in the first subsystem, the first subsystem forwards the downstream message to another subsystem housed within the remote enclosure via a second embedded operations channel included in a second communication channel. The second subsystem is subtended from the first subsystem and is connected thereto by the second communication channel.

Abstract: A communication system that comprises at least two links to carry signals, a first communication unit and a second communication unit. The first communication unit comprises at least two ports, each port configured to transmit and receive signals; and a logic unit configured to process the signals transmitted and received by each of the at least two ports in the first communication unit. The second communication unit comprises at least two ports, each port configured to transmit and receive signals and coupled to a respective one of the at least two ports in the first communication unit via a respective one of the at least two links; a programmable logic unit configured to process the signals transmitted and received by each of the at least two ports in the second communication unit; and a processor.

Abstract: A communication system comprises a plurality of DSL links comprising a first group and second group of DSL links, each group comprising more than one DSL link. The communication system also comprises a first node and a second node each having at least one application port and a plurality of DSL ports. Each DSL port is coupled to a respective one of the DSL links such that the first and second nodes are communicatively coupled via the DSL links. Each of the first and second nodes is configured to interleave a first copy of data received over the respective application port across the first group and to interleave a second copy of the data across the second group. When a failure is detected on a DSL link in the first group, each of the first and second nodes is configured to switch from the first group to the second group.

Abstract: A digital subscriber line (DSL) unit comprises a first user port configured to communicate signals according to an Ethernet protocol and a second user port configured to communicate signals according to a second non-Ethernet protocol The DSL unit also comprises at least one DSL port configured to communicate signals according to a DSL protocol; and a processing device configured to analyze Ethernet signals received over the first user port to determine when to output data from the respective received Ethernet signals over the second user port and when to output data from the respective received Ethernet signals over the at least one DSL port. The processing device is further configured to extract data from signals received over the second user port and insert the extracted data into a corresponding Ethernet signal having a respective emulated circuit identification and to output the corresponding Ethernet signal over the first user port.

Abstract: A method to reduce link-up time between nodes in a communication system is provided. The method includes determining a node in the communication system is in a HANDSHAKE state; randomly configuring the node in one of a master mode and a slave mode based on a determination that the node is in the HANDSHAKE state; determining if the node is in a LINK-UP state with a selected node in the communication system based on the random configuring of the node; and randomly re-configuring the node in one of the master mode and the slave mode based on a negative determination that the node is in the LINK-UP state with the selected node.

Abstract: System and methods for High-speed Digital Subscriber Line Software Download are provided. In one embodiment, a Digital Subscriber Line (DSL) Transceiver Unit is provided. The transceiver unit comprises at least one DSL transceiver, wherein the at least one DSL transceiver implements an Embedded Operations Channel (EOC) and a data path over at least one DSL pair; a first memory for storing a software file for transfer over the DSL pair, wherein the software file comprises a header and at least one file record; and a second memory for storing a provisioning table, wherein the provisioning table establishes timeslot allocations for a plurality of channels communicated over the data path, including provisions for a software download channel for transmitting the software file from the first memory to a target unit over the data path.

Abstract: A digital subscriber line (DSL) unit comprises a first user port configured to communicate signals according to an Ethernet protocol and a second user port configured to communicate signals according to a second non-Ethernet protocol The DSL unit also comprises at least one DSL port configured to communicate signals according to a DSL protocol; and a processing device configured to analyze Ethernet signals received over the first user port to determine when to output data from the respective received Ethernet signals over the second user port and when to output data from the respective received Ethernet signals over the at least one DSL port. The processing device is further configured to extract data from signals received over the second user port and insert the extracted data into a corresponding Ethernet signal having a respective emulated circuit identification and to output the corresponding Ethernet signal over the first user port.

Abstract: A communication network comprises a first central digital subscriber line (DSL) unit having at least one application port and a plurality of DSL ports; a first remote DSL unit having at least one application port and at least one DSL port, wherein the first remote DSL unit is communicatively coupled to the central DSL unit via a first single independent DSL pair having a first EOC channel; and a second remote DSL unit having at least one application port and at least one DSL port, wherein the second remote DSL unit is communicatively coupled to the central DSL unit via a second single independent DSL pair having a second EOC channel; wherein the at least one application port in the central DSL unit is communicatively coupled to an application port in at least one of the first remote DSL unit and the second remote DSL unit.

Abstract: A wireless communication system comprises a hub; a plurality of radio access nodes; a plurality of forward devices that produce digitized versions of downstream analog radio frequency signals; a plurality of reverse devices that produce reconstructed versions of upstream analog radio frequency signals; a plurality of transport interfaces to couple the hub to the plurality of communication links; and a switch having a plurality of ports. The plurality of ports comprises a plurality of input ports and plurality of output ports. The switch listens for a device identifier on at least one of the plurality of input ports to determine if a device is communicatively coupled to the input port. The switch transmits a port identifier over at least one of the plurality of output ports and searches a shared data structure to determine if a device is communicatively coupled to the output port.

Abstract: A communication unit comprises a first port; a second port, each of the first and second ports configured to transmit signals to and receive signals from another communication unit; a programmable logic unit configured to process signals transmitted and received by the first and second ports; and a processor configured to program the programmable logic unit for crossover operation based on detection of a crossover connection.

Abstract: A method to transmit and receive Internet protocol data packets comprising running an Internet protocol application, outputting an Internet protocol data packet based on the running of the Internet protocol application and transmitting the Internet protocol data packet via a physical layer compliant with Ethernet first mile standards.

Abstract: Systems and methods for point-to-multipoint communications with CAS are provided. In one embodiment, a line unit comprises: an interface to communicate with a node using a first frame structure comprising timeslots, the frame structure transporting signaling bits in an x'th timeslot; the unit coupled another line unit via a communication link, wherein the other unit communicates with another network node using a second frame structure comprising timeslots, the second frame structure transporting signaling bits via its x'th timeslot. Payload timeslots for a first frame received from the other line unit are mapped from the second frame structure to payload timeslots of a second frame using the first frame structure and transmitted via the interface. The x'th timeslot for each of the first and second frame structures are formatted in a multiframe structure comprising a schedule of signaling bit locations allocated to signaling bits corresponding to a designated payload timeslot.

Abstract: A method to reduce link-up time between nodes in a communication system is provided. The method includes determining a node in the communication system is in a HANDSHAKE state; randomly configuring the node in one of a master mode and a slave mode based on a determination that the node is in the HANDSHAKE state; determining if the node is in a LINK-UP state with a selected node in the communication system based on the random configuring of the node; and randomly re-configuring the node in one of the master mode and the slave mode based on a negative determination that the node is in the LINK-UP state with the selected node.

Abstract: A communication system comprises a plurality of DSL links comprising a first group and second group of DSL links, each group comprising more than one DSL link. The communication system also comprises a first node and a second node each having at least one application port and a plurality of DSL ports. Each DSL port is coupled to a respective one of the DSL links such that the first and second nodes are communicatively coupled via the DSL links. Each of the first and second nodes is configured to interleave a first copy of data received over the respective application port across the first group and to interleave a second copy of the data across the second group. When a failure is detected on a DSL link in the first group, each of the first and second nodes is configured to switch from the first group to the second group.

Abstract: A communication comprises a plurality of digital subscriber line (DSL) links, a first node having at least one application port configured for an elastic service and a plurality of DSL ports, and a second node having at least one application port configured for an elastic service and a plurality of DSL ports. Each of the first and second nodes is configured to interleave data received over the at least one application port across the plurality of DSL ports, each DSL port allocated a set of DSL timeslots for transport of the data received over the at least one application port. When a failure is detected on one of the DSL links, each of the first and second nodes is configured to interleave the data received over the at least one application port across the remaining DSL ports not connected to the failed DSL link without adjusting the set of DSL timeslots allocated to each of the remaining DSL ports for transport of the data from the at least one application port.

Abstract: Systems and methods for communicating faults across a communications network cross-connect are provided. In one embodiment, a method for communicating an alarm condition in a cross-connected network is provided. The method comprises providing a cross-connect having a first side and a second side, wherein the first side includes a plurality of interface ports and the second side includes an interface port; detecting a fault on a first interface port of the first side; and when a fault is detected on the first interface port of the first side, transmitting a signal on the interface port of the second side, the signal having a pre-defined alarm data pattern inserted into one or more time slots associated with the first interface port of the first side.

Abstract: A multiplexing card comprises a primary TDM port over which TDM frames are communicated to and from a networking device, a plurality of secondary TDM ports over each of which fractional TDM frames are communicated to and from a plurality of digital subscriber line (DSL) units; and a logic device coupled between the primary TDM port and the plurality of secondary TDM ports, wherein the logic device is operable to map timeslots from each of the fractional TDM frames received over the plurality of secondary TDM ports to timeslots in a TDM frame communicated over the primary TDM port, and to map each of a plurality of blocks of timeslots in a TDM frame received over the primary TDM port to one of the plurality of secondary TDM ports; wherein the combined number of timeslots containing user data in the fractional TDM frames received over the plurality of secondary TDM ports is less than or equal to the maximum number of available timeslots in the corresponding TDM frame communicated over the primary TDM port.

Abstract: A system of terminating signals in a telecommunication system is disclosed. In one embodiment a line card comprises functional circuitry, line card connector contacts and a termination resistor. The functional circuitry is used to interface first type ports with second type ports. The line card connector contacts are adapted to be selectively coupled to a backplane of a chassis. The termination resistor is adapted to terminate signal lines when a jumper is coupled across select line card contacts.

Abstract: Systems and methods for point-to-multipoint communications with CAS are provided. In one embodiment, a line unit comprises: an interface to communicate with a node using a first frame structure comprising timeslots, the frame structure transporting signaling bits in an x'th timeslot; the unit coupled another line unit via a communication link, wherein the other unit communicates with another network node using a second frame structure comprising timeslots, the second frame structure transporting signaling bits via its x'th timeslot. Payload timeslots for a first frame received from the other line unit are mapped from the second frame structure to payload timeslots of a second frame using the first frame structure and transmitted via the interface. The x'th timeslot for each of the first and second frame structures are formatted in a multiframe structure comprising a schedule of signaling bit locations allocated to signaling bits corresponding to a designated payload timeslot.