摘要:
The present invention discloses a method and an apparatus for adjusting a service of optical synchronous digital hierarchy network, and the method comprises: at first configuring the input time-slot space-division cross path to the time-division module after adjustment in space-division module and the time-division cross path of the time-division module after adjustment; and configuring the output time-slot space-division cross path from the time-division module after adjustment in space-division module; deleting the original cross path formed by the time-division module before adjustment. The apparatus comprises: a first configuration unit used to configure the input time-slot space-division cross path to the time-division module after adjustment in space-division module and the time-division cross path of the time-division module after adjustment; a second configuration unit configuring the output time-slot space-division cross path from the time-division module after adjustment in the space-division module; deleting the original cross path formed by the time-division module before adjustment.
摘要:
An optical cross-connect (OCX), which is designed for switching so-called optical channels of different multiplex levels with respectively defined bit rates, comprises a number of input/output ports (IO1, IO2, IO3) which are respectively adapted for transmitting and receiving communication signals of a given multiplex level. The cross-connect further comprises, for each multiplex level, a separate space switching matrix (S1, S2, S3) which is adapted to that multiplex level. The individual switching matrices (S1, S2, S3) are interconnected via multiplexers (MUX1, MUX2). Communication signals which are to be switched to an output of the same multiplex level are switched directly by the respective switching matrix to the respective output, whereas communication signals which are to be switched to an output of a lower or higher multiplex level are first switched by the respective switching matrix to one of the multiplexers, where they are multiplexed or demultiplexed and then forwarded to the switching matrix of the next-higher or next-lower multiplex level respectively, which then switches the multiplexed or demultiplexed communication signals to the respective input.
摘要:
A synchronous telecommunications network comprises a number of rings each incorporating a plurality of multiplexers and each coupled to a switch via a respective master multiplexer. A disaster recovery interface point provides an interface to one or more remote switches. Each ring incorporates a dormant master multiplexer coupled to the disaster recovery point and which is activated in response to a failure of the switch as a replacement master multiplexer so as to re-route traffic on the synchronous ring to the remote switch. This maintains service in the event of a catastrophic failure of the switch.
摘要:
A lightwave telecommunications matrix configuration for use in a fiber-optic telecommunications network includes a first set of interface circuits for interfacing with a first external fiber-optic circuit. A second set of interface circuits interfacing with a second external fiber-optic circuit. A plurality of time slot matrices associate between the first and second sets of interface circuits for routing lightwave transmissions within the fiber-optic network. The matrix configuration is optimized for a variety of telecommunication switch architectures, including add/drop matrix, ring, and terminal configurations. Accordingly, the matrix configuration is easily scalable to a wide range of telecommunications network sizes and data rates.
摘要:
A reconfigurable switch memory which is applicable to time switches and space switches enables two very different time switching functions to be efficiently implemented by one type of switching unit. A reconfigurable switching device is provided which, for instance, can work in either one bit or five bit mode, the granularity of the switch being varied.
摘要:
A space and time switching element comprises a plurality of input circuits for one input line each, on which a plurality of input signals are receivable in a time-division-multiplex mode, a plurality of output circuits for one output line each, on which a plurality of output signals can be output in a time-division-multiplex mode, and memories for temporarily storing signals, wherein a part of the input circuits and output circuits is provided for narrow-band input and output signals, respectively, and another part of the input circuits and output circuits for broadband input and output signals, respectively, and that via the memories, each narrow-band input circuit is connectable to every broadband output circuit, and each broadband input circuit to every narrow-band output circuit. The narrow-band input and output signals may be synchronous time-division-multiplex signals, while the broadband input and output signals may be asynchronous time-division-multiplex signals. The switching element may connect a broadband digital switching network to narrow-band peripheral units.
摘要:
Disclosed is a method and apparatus for improving the performance and connection establishing capability of multi-stage switching networks by providing additional intelligent features in the individual switching apparatus devices at each stage of the network. The invention method is particularly effective in asynchronous circuit-switched networks. The most important feature to be added is adaptivity of the switching apparatus; where adaptivity means the ability of each switching element to determine for itself which of several optional alternate paths to try at each stage of the network based on availability. This is a better approach because it brings the decision directly to the switching apparatus involved, which has the data required to make an intelligent path selection decision to circumvent blocking in the multi-stage network.
摘要:
An optical signal transmission device is used for transmitting optical light rays from a number of light emitters to a number of light receivers, and includes a substrate, a number of first optical waveguide elements, a number of second optical waveguide elements, a number of reflectors, and an integrated circuit. The substrate has a first side surface for positioning the light emitters, and a second side surface for positioning the light receivers. The light emitters and the light receivers are corresponding to the first optical waveguide elements. The second optical waveguide elements intersect with the first optical waveguide elements to form a number of hollow junctions for receiving the reflectors. Each reflector can rotate around a rotating shaft thereof in the corresponding hollow junction to change the optical transmission path of light rays from the light emitters. The integrated circuit controls rotating angles of the reflectors.
摘要:
Network data is received in a first format. The data is converted to a synchronous optical network (SONET) format. Switching functions are performed on the SONET formatted data. The SONET formatted data is converted to a second format. In one embodiment, the switching functions on the SONET formatted data contains performing time switching and space switching.
摘要:
A flexible fuel hose having improved fuel vapor barrier properties wherein the fuel hose includes a fluoropolymer barrier layer forming an inner tubular structure, a second synthetic elastomer tubular structure around the first fluoropolymer barrier layer, and a protective cover; and a method for the manufacture of such hose are described.