Abstract:
Traffic is transported within a system in the form of TDM packets. These packets are generated at source line units and transported from the line units to a switch. The switch routes the packets to appropriate target line units based on information contained within the packet. At the switch, packets from the source line units may be merged. A gather function relies on each of the line units sourcing packets to exclusively drive lines at software-assigned timeslots within the packet. The switch performs a simple OR function of each byte in merging the packet payloads.
Abstract:
In a digital telecommunications system having data packages carrying identification data, the identification data is characterized in that it is unique to the package within a station and does not depend on the identity of the originating station.
Abstract:
Improved interface system for synchronous hierarchy telecommunication networks, in particular SDH networks, comprising a high frequency backpanel function, said system comprising at least a central board and one or more input/output peripheral board apt to exchange data frames and control bytes. According to the invention, the data frames contain control bytes and said data frames are bitwise converted before being exchanged between the peripheral boards and the central board.
Abstract:
A SONET bus has a set of SONET mappers that transmit and receive facility signals on facility lines. Each facility line operates at a predetermined speed. Each SONET mapper generates a SONET signal by mapping the facility signals received by the SONET mapper into a predefined format for transmission. The predefined format includes timeslots associated with each received facility signal. Each SONET mapper receives a SONET signal and maps the received SONET signal into the facility signals transmitted by the SONET mapper on the facility lines. Each SONET signal includes an associated set of the facility signals. At least one counter outputs a timeslot count signal for synchronizing the timeslots of the facility signals. A set of bidirectional drivers has a mapper side and a system side. Each bidirectional driver receives the timeslot count signal. A first set of interconnections separately couples each bidirectional driver at the mapper side to at least one SONET mapper of the set of SONET mappers, such that each bidirectional driver receives the SONET signal generated by at least one SONET mapper and transmits the SONET signal received by at least one SONET mapper. A second set of interconnections couples the bidirectional drivers to each other at the system side. The bidirectional drivers transmit one or more of the facility signals via the second set of interconnections by extracting the one or more facility signals from the SONET signals generated by the SONET mappers in accordance with the timeslot count signal and the predefined format.
Abstract:
A data transmission device where a low-speed signal transmission frame is included in time slots of a high-speed signal transmission frame and a number of the time slots to include the low-speed signal transmission frame is variable, wherein the time slots have respective time slot numbers, includes a storage unit storing signal data of the high-speed signal transmission frame corresponding to the number of the time slots based on a time slot number basis, wherein the signal data of the high-speed signal transmission frame are supplied on the time slot number basis; and a selection and output unit selecting and sequentially outputting the signal data on the time slot number basis, wherein the signal data have been stored in accordance with the number of the time slots.
Abstract:
The present invention discloses a distributed electrical cross apparatus, and a system and method for the distributed electrical cross apparatus implementing an SNC cascade protection. The apparatus includes a backboard and at least four single-boards integrated with electrical cross units, wherein the single-boards are inserted in the limited number of slots in the backboard, and these single-boards also set line-side service access units, client-side service access units and backboard access units. The present invention has both accessing of line-side services and accessing of client-side services in the same single-board, access and flexible scheduling of various services such as line-side services and client-side services and so on are implemented on the backboard with limited number of slots, and the function of the distributed electrical cross system processing various services is increased in the case of low cost.
Abstract:
A method and apparatus for processing at least two types of payloads received at varying intervals in a communications network using a single processing path is provided. The two types of payloads may include virtually and contiguously concatenated payloads according to SONET/SHD architecture. The method comprises interleaving data in a predetermined format and controlling distribution of the data irrespective of the format received such that the data can be processed at the destination and passed to downstream components.
Abstract:
Methods, systems, and apparatuses related to a communication switch are disclosed herein. In some embodiments, the communication switch may be configured to transmit TDM, ATM and/or packet data from an ingress service processor, through a plurality of switch elements, to an egress service processor. Other embodiments may be described and claimed.
Abstract:
Techniques for switching facilities in cross-connect systems are provided. Redundant line cards can determine line card path status and insert the path status into the associated data stream. A switch matrix can analyze the path status of the redundant line cards in hardware and switch the selected line card based on which line is providing the best performance. Additionally, consecutive path status information can be analyzed before switching line cards.
Abstract:
A system for performing Bit Interleaved Parity-8 (BIP-8) computation on large concatenated payloads, in a processing node of an optical communications networks. The BIP-8 computation system comprises storage means associated with each processing strip for allowing the comparison between calculated and transmitted frame error check values to be delayed.