Abstract: In a control system for an automatic vending machine with a controlled device, a terminal control unit controls the controlled device in accordance with a control program. A main control unit is connected to the terminal control unit through a transmission path and controls the terminal control unit through communication with the terminal control unit. The main control unit is provided with a transfer arrangement for transferring a new control program to the terminal control unit through the transmission path. The terminal control unit is provided with a memory and a rewriting arrangement connected to the memory. The memory is for memorizing the first-mentioned control program as a memorized control program. The rewriting arrangement is for rewriting the memorized control program into the new control program at need.

Abstract: The present invention relates to switching in electronic networks. Many data transmission protocols and technologies used in such networks, such as TCP/IP and Ethernet, use variable-length packets for transmission. Often however, the nodes that make up these networks typically contain high-speed cell switches that only support fixed-size data units. To support variable-length packets in such a fixed-size cell switch non-interleaving switching and transmission must be offered. The present invention provides such a solution in essence by segmenting a variable-length frame into a plurality of fixed-length cells including a start-of-frame cell, one or more continuation cell(s), and an end-of-frame cell and routes said fixed-length cells through said switch, thereby providing, at an output of said switch, subsequent and deadlock-free transmission of consecutive cells of a certain frame, and block any cell of a different frame from interleaving.

Abstract: A number of classes are received. Each class has a number of classification rules. A result is output indicating a first class of the number of classes conflicts with a second class of the number of classes upon determining that at least one of classification rules of the first class overlaps with one of the classification rules of the second class.

Abstract: A method and apparatus for managing ATM formatted MPEG SI data in a television set-top box. A virtual channel indicator (VCI) is used to associate a segment of SI data with a virtual channel. An ATM processor receives a stream of ATM packets containing SI data from an out-of-band tuner. The ATM packets include the VCI in a header thereof. The ATM processor stores the SI data in a buffer memory associated with the VCI for retrieval by the ATM processor at the request of the STB system processor.

Abstract: A system includes a plurality of resources and a plurality of requesters. A first portion of the resources are reserved for a particular time period in the system during a first arbitration phase, in response to prescheduling requests. During a second arbitration phase a second portion of the resources are allocated in response to regular requests, the first portion of the resources which are reserved being unavailable to the regular requests.

Abstract: A status queue in a host and a control queue in a segmentation and reassembly (SAR) subsystem are on opposite sides of a host bus in a control plane. Buffer descriptors in the host and the SAR and buffers in the host are in a data plane. To transfer cell payloads to a first line interfacing the SAR, the host writes the SAR that it has such cell payloads. The host writes the host buffer descriptors into the control queue to obtain the transfer of the buffer payload to the first line. The SAR writes the status queue when the transfer has been completed. To transfer cell payloads to the host memory, the host writes into the control queue the address of the buffers to receive the payload from the SAR. The SAR then writes the buffer descriptors to the status queue to obtain the transfer of the cell payloads to the buffers. Each of the control and status queues may be respectively considered to constitute two (2) control queues and two (2) status queues.

Abstract: A method and system for routing in an ATM network, which has a plurality of nodes connected to each other via links and a network management centre connected to the ATM network. The optimisation information is defined in a centralized manner in the network management centre and the nodes apply the results of this centralized optimisation according to their own condition. The optimisation information is defined so that sum of rejected capacity for each connection between an origin node and a terminal node does not exceed a predetermined limit. The invention provides the advantage that the operation of individual nodes in setting up connections is very fast. Moreover, a fair distribution of network resources among users is achieved.

Abstract: A control program structure and its method are disclosed which is capable of controlling a hardware source of an ATM switching system from an external source through a standard interface. The control program structure of an ATM switching system including: a GSMP master function unit mounted on a processor board existing at an external source of an ATM switching system, for performing a master function of a GSMP (general switch management protocol); a protocol processing function unit mounted on a processor board inside a switching system, for processing a slave function of a GSMP; and a plurality of resource control function units each mounted on processor boards distributed in the switching system, for controlling a hardware resource of the system according to a request message of the protocol processing function unit.

Abstract: The invention discloses a Platform of Information Switch that adapts for switching the integrated information between the different user terminals and the different services terminals. The Platform includes a Device Access gateway for connecting user terminals and switching the correspondent information, an Information Switch for implementing concentrated management and the integrated information switching, and a Service Gateway for interfacing with the service terminals. Wherein the Information Switch consists of a Management System, a Core Switching System and a Platform Routing System; wherein the Core Switching System includes an Information Bus, Switching Modules and a Switching Management Module. The Device Access Gateway and Service Gateway are both connected to the Information Switch via the Information Buses. The Information Switching Platform of present invention can transform the complex information switching process between the user terminals and service terminals to a simple platform operation.

Abstract: Described are techniques used in dynamically modifying RDF groups. A system call is issued by a host computer system to execute a remote system call on a first data storage system to create, remove, or modify an RDF group between the first data storage system and another data storage system that is remotely connected to the first data storage system in an RDF switched environment. As part of executing the remote system call, data is pushed from the first to the second data storage systems without having an established link between the data storage systems. Each data storage system performs processing to make the necessary modifications in all directors in accordance with the dynamic RDF group. A status indicating success or failure of the remote system call is returned to the host computer system.

Abstract: A data packet switching system having a central controller and a number of peripheral controllers each incorporating at least one queue for storing packets of information received from a peripheral data packet source. Each queue in each peripheral controller includes a queue size detection logic adapted to communicate to the central controller the approximate state of the size of the corresponding queue. The scale for the approximate state being arranged to be empty, nearly empty, active, busy, very busy, nearly full and full.

Abstract: A stator support structure is constructed having a divided-coil type stator 5 having a plurality of divided stator cores 5A and a plurality of stator coils wound around the stator cores, respectively. First and second rotors 7 and 9 are located inside and outside the stator 5, respectively, to form a three-layer structure. The stator cores 5A are fixedly supported at both distal ends thereof with front and rear stator support members, respectively, with equally spaced distances. A plurality of elongated positioning projection members 31 are located between the stator cores 5A. Further, provision of the stator support members 19 and 21 made of a material having nonmagnetic and high heat conducting properties allows the stator support members 19 and 21 to discharge heat from the stator 5.

Abstract: The Fibre-Channel flow control mechanism is augmented to facilitate efficient data exchange between Fibre-Channel ports over extended distances. A supplemental buffer mechanism may be maintained as part of an interface to a transport network used to carry Fibre-Channel traffic. The transport network interface makes a remote Fibre-Channel port aware of the augmented local receiver buffer capacity by intercepting certain frames used in link establishment and substituting an enhanced buffer capacity for the local Fibre-Channel port's internal buffer capacity. This technique provides improved throughput and readily accommodates large distances and large frame sizes.

Abstract: A data reception unit for receiving a plurality of data streams over a data channel. The data streams are received as amounts of data, each amount of data comprising a data portion including data from a data stream and an identity portion identifying that data stream. The data reception unit comprises a data stream memory comprising a plurality of data stream storage areas and a buffer, a first storage information memory for holding first storage information, a processing unit, and a data storage controller. The data storage controller, for each received amount of data, receives the identity portion of the amount of data and performs a storage operation based on the identity portion.

Abstract: A communication mode determination section 201 determines the communication mode based on the CIR measured by a CIR measurement section 219; a DRC signal creation section 202 creates a DRC signal with a number corresponding to the communication mode; and a DRC power controller 205 refers to a transmission power table 206 showing the correspondence between DRC numbers and transmission power, and, based on the transmission power of the pilot signal output from a pilot power controller 209, increases transmission power in proportion as the DRC signal indicates that downlink channel quality is good.

Abstract: A passive optical network employing wavelength dependent routing uses two-phase signalling between a network controller and terminals. In a first phase, terminals are informed of the wavelength channel allocated to them for a second signalling phase, groups of terminals being allocated to each channel. In the second signalling phase, control signals indicate to the terminal the wavelength and time slots allocated to the terminal in the following data transmission phase.

Abstract: A scaleable digital broadband network capable of delivering broadcast digital video data, on-demand digital video data, video and audio telephony, and data originating or emanating with an end user personal computer, e.g. Internet data, is disclosed. The network of the present invention is partitioned into a service applications content management subsystem, a delivery network subsystem coupled to the applications management subsystem, and a network management subsystem coupled to the delivery network subsystem. The present invention permits the service applications content management subsystem to request delivery network resource devices for the manipulation, formatting, or any other necessary preparation of the deliverable data in the form of generic functional blocks. The service applications content management subsystem does not need to understand what actual devices are used to provide the requested functionality.

Abstract: An apparatus and method for workload balancing along multiple communication paths to a plurality of devices. The apparatus includes a controller that accumulates path usage information and a path balancing device that makes use of the accumulated path usage information to perform a path balancing operation. The path balancing method involves the path balancing device calculating the total expected connect time for all I/O messages issued to each of a plurality of peripheral devices during a predefined sampling period. These totals are then added for each communication path for the sampling period to obtain path totals. The path totals are then compared to see if a difference between the highest used path and the lowest used path is greater than a threshold amount. If the difference is higher than the threshold amount, the peripheral device having a total expected connect time that is closest to a target value is moved from the highest used path to the lowest used path.

Abstract: A method for realizing multipoint connections in a H.323 data communication network composed of a connection between first terminal equipment and second terminal equipment and of a consultation connection between the first terminal equipment and third terminal equipment. The multipoint connection setup is respectively initiated by the first terminal equipment with a connection setup to a conference unit. After the setup of signaling connections between the participating terminal equipment and the conference unit, and after releasing the connections between the terminal equipment, the conference unit initiates the opening of payload data channels between the terminal equipment via the conference unit. The setup of signaling connections between the participating terminal equipment and the conference unit is controlled in a call redirection initiated by the first terminal equipment and implemented in the other terminal equipment having the call redirection destination of conference unit.

Abstract: Systems particularly a virtualization switch or a storage device, which include virtual ports connected to virtual devices with virtual worldwide names and virtual LUNs. Because Fibre Channel environment hosts can track worldwide names from one port to another and allow continuity in that regard, the virtual worldwide names are provided with relevant virtual LUNs and connected these to virtual ports so that the virtual devices can be moved as desired to overcome failures or to allow load balancing.

Abstract: The invention relates to a buffer memory, method and a buffer controller for queue management usable in an ATM switch. An object of the invention is to achieve a high frequency throughput of data cells in the buffer memory. This object is achieved by using a buffer memory which is organized as 256*(424+8) SRAM-cells. The memory is used for holding ten queues, one for each incoming channel and two free-queues containing idle cells.

Abstract: A network system (10). The system comprises a network (WAN1, LAN1, LAN2) having an architectural model comprising a plurality of layers. The system also comprises a centralized manager node (CM1), coupled to the network. The system also comprises a plurality of routers (ERx) coupled to the network for communicating packets along the network and coupled to communicate with the centralized manager node. The centralized manager is programmed to perform the step (28) of communicating mapping information to each of the plurality of routers, and the mapping information comprises a correspondence of a behavior on a first of the plurality of layers with a behavior on a second of the plurality of layers.

Abstract: A multi-domain telephony application programming interface is disclosed for managing a multimedia call across a plurality of domains. Advanced addressing techniques are utilized to support a media independent call control model across multiple communication domains in a consistent and integrated manner. In an illustrative embodiment, the multi-domain telephony application programming interface is based on the Java Telephony API (JTAPI). The multi-domain telephony application programming interface recognizes a call between two domains as one call on both systems, and presents the calls together as a single transaction to a user application. The multi-domain telephony application programming interface identifies and manages a set of inter-domain addresses that are the egress and access points between two domains, so that calls can traverse between them.

Abstract: A Virtual Group Connection (VGC) scheme for grouping ATM connections. A plurality of VPCs, VCCs, or both are managed together as a single virtual data pipe having a pool of common connection resources (e.g., bandwidth, buffering, etc.) associated therewith. Shaping, grooming, policing, switching, and other traffic engineering operations may be performed on a VGC as a single connection hierarchy operable to be associated with a single customer.

Abstract: A data communication architecture including a plurality of devices having input/output (I/O) ports supporting communication at a first rate and a data processor having a number of I/O ports where each I/O port supports data communication at a second data rate. The second data rate is at least double the first data rate. A communication link coupled to one of the data processor I/O ports supports the second data rate. A bridge device is coupled to the communication link and to the I/O ports of the plurality of devices. The bridge device translates the communication link at the second data rate to a plurality of communication links at the first data rate, where the plurality of communication links at the first data rate are substantially independent of each other.

Abstract: An ATM switching system comprises a switch unit including a plurality of input ports and a plurality of output ports having the same cell transmission rate, and a multiplexer for multiplexing cell trains outputted from at least two output ports into a single cell train and outputting the cell train to a high-speed output line (and/or a demultiplexer for demultiplexing a cell train from an output port into a plurality of cell trains and outputting the cell trains to a plurality of low-speed output lines). The switch unit includes a buffer memory for temporarily storing cells inputted from the input ports while forming a queue chain for each output line to which each cell is to be outputted, a demultiplexer for distributing the cells read from the buffer memory among the output ports in circulation, and a buffer memory control circuit for controlling the write and read operation of cells with the shared buffer memory.

Abstract: A low power radio network comprises a master radio device (10) having a routing table (20), and a plurality of slave devices (SL1 to SL6), at least one of the slave devices has an inputting device (38, 40) and other of the slave devices (SL1 to SL4) being associated with end user devices (LUM1 to LUM4) compatible with the inputting device. In order to create a functional link between at least a predetermined end user device and the inputting device, the radio network is placed in a pairing mode in which the master device (10) activates the end user devices sequentially and at the activation of the predetermined end user device, the inputting device is activated which causes the routing table to create a pairing link.

Abstract: Several embodiments of a computer system are described which achieve separation of control and data paths during data transfer operations, thus allowing independent scalability of storage system performance factors (e.g., storage system iops and data transfer rate). In one embodiment, the computer system includes a data switch coupled between a host computer and one or more storage devices. A storage controller for managing the storage of data within the one or more storage devices is coupled to the switch. The switch includes a memory for storing data routing information generated by the controller, and uses the data routing information to route data directly between the host computer and the one or more storage devices such that the data does not pass through the storage controller. Within the computer system, information may be conveyed between the host computer, the switch, the one or more storage devices, and the storage controller according to a two party protocol such as the Fibre Channel protocol.

Abstract: An ATM network comprises a central call processor, and one or more remotely located ATM bridge nodes, whereby the call processor is separated from the switching fabric in the ATM bridge nodes. A plurality of preestablished permanent virtual paths are defined within the ATM bridge nodes. In setting up a connection, a source user terminal communicates with the central call processor to obtain the virtual path identifier associated with the virtual path to one or more destination user terminals. The user data is segmented into one or more cells that incorporate a header containing the appropriate VPI. The ATM bridge node extracts the VPI from incoming cells, and then directs these cells to the appropriate output ports in accordance with a routing table. The instant invention provides for improved network efficiency and upgradability, and is particularly suited to satellite based ATM networks.

Abstract: A novel multiport overhead cell processor for processing overhead cells (e.g., SONET/SDH overhead bytes, etc.) in a telecommunications node is disclosed. Some embodiments of the present invention advantageously employ a single instance of logic to process overhead cells for all of a node's input ports. The illustrative embodiment comprises a single overhead cell processor and a memory for storing instances of state variables associated with each input port.

Abstract: A system which serves both as a host and a device cannot be realized with a single connector due to the constitution of hardware in the prior art. The prior art system only detects the existence of a device and cannot distinguish between a host and a device while a power source is turned on and switch its function. The information processing apparatus of the present invention separates the data lines of a host communication controller and the data lines of a device communication controller and activates the selected controller by means of selecting the data lines of the controllers and means of determining which is connected to a connector, a host or a device.

Abstract: Network applications may require a guaranteed rate of throughput, which may be accomplished by using buffer memory reservation to manage a data queue used to store incoming packets. Buffer memory reservation reserves a portion of a data queue as a dedicated queue for each flow, reserves another portion of a data queue as a shared queue, and associates a portion of the shared queue with each flow. The amount of the buffer memory reserved by the dedicated queue sizes and the shared queue portion sizes for all of the flows may exceed the amount of physical memory available to buffer incoming packets.

Abstract: Method and apparatus are disclosed for an optoelectronic network interface device allowing reconfiguration of ports in a Local Area Network (LAN). More particularly, the optoelectronic interface device is integrated to include optical ports for communicating with a network, electronic circuits for providing an interface to end-users and a controllable electronic switch between the optical ports and electronic circuits. In response to a control signal, the switch dynamically reconfigures the connection between selected optical ports and selected electronic circuits.

Abstract: Disclosed is a mobile communication system that includes a mobile switching center having a multiprocessor configuration and radio base stations subordinate to the mobile switching center, with a single radio base station being connected with mutually independent signaling links from a plurality of processors within the mobile switching center. When a call issued from that or other system is received by a subscriber under that system, call ID information contained in a mobile call demand signal sent from the mobile switching center to the radio base station has a storage area for an identifier of a processor within that mobile switching center. The radio base station allows the destination of return of a mobile call response signal to be the processor indicated by the processor identifier.

Abstract: A scalable switch fabric system and apparatus for computer networks. The scalable switch fabric system and apparatus comprises a Switch Fabric Subsystem, Input-Output Subsystems, Application Subsystems and System Control Subsystems. The Switch Fabric Subsystem is a protocol agnostic cell or packet switching infrastructure that provides scalable interconnections between the Input-Output Subsystems and Application Subsystems. The Switch Fabric Subsystem provides primary data paths for network traffic being moved by the switch. The Input-Output Subsystems connect to the external network devices that use the switch to communicate with other external network devices. The Input-Output Subsystems are part of the data path and do low level decoding of ingress frames from the external ports; switching/routing, identifying the destination Input-Output Subsystems for the frame; and queuing the frame for transmission through the Switch Fabric.

Abstract: For example, a communication service controlling exchange apparatus (1) which can control a condition of a communication service to be provided includes call control memories (131-1 to 131-M) individually provided for paths between user terminals. User terminal registration information of those user terminals which can enjoy a communication service of a desired form is registered in the call control memories (131-1 to 131-M), and a communication service providing section (121) for linking the call control memories (131-1 to 131-M) with each other so that a communication service of the desired form can be provided is formed. A link changing control section (122) for changing the mutually linked condition of the pertinent ones of the call control memories (131-1 to 131-M) is provided in order to allow form changing to a communication service of a different form. Consequently. communication services of a plurality of kinds of forms can be provided by the single exchange apparatus (1).

Abstract: There is disclosed, for use in an asynchronous transfer mode (ATM) network, an ATM switch controller capable of routing a call through the ATM network. The ATM switch controller comprises: 1) a database capable of storing at least one of quality of service (QoS) data and congestion level data received from a plurality of ATM switches in the ATM network; and 2) a route selection controller capable of receiving a call request from a first of the plurality of ATM switches and selecting a call route connection to a second of the plurality of ATM switches, wherein the second ATM switch adjoins the first ATM switch and the selected call route connection is selected in response to at least one of QoS data and congestion level data of the second ATM switch stored in the database.

Abstract: Parsing capabilities may be provided to define a parser within network hardware. By selectively loading one or more desired parsing capabilities, a parser may change its behavior. In one embodiment, a loadable set of rules associated with a particular packet type may be used to provide a dynamic parser (e.g., defined in a state machine). For a host, a data packet (e.g., an Ethernet packet) may be received in an adapter of an Ethernet device. Before transferring the data packet from the Ethernet device to the host, one or more action-based parsing rules may be dynamically loaded in the adapter. Instead of parsing the data packet based on a static set of pre-loaded rules, the dynamic parser may advantageously use the dynamically loaded action-based parsing rules to identify the data packet based on the packet type, for example.

Abstract: Provided are a method and system for achieving enhanced performance in communications between a plurality of emulated networks overlaid onto at least one base network, wherein the communications involve one or more source route bridges. The method and system accomplish their objects via the following. Determining when communication is to occur, through the one or more source route bridges, and between at least two entities where a first of the at least two entities is a member of a first emulated network and where a second of the at least two entities is a member of another of the plurality of emulated networks. Informing the at least one of the at least two entities of one or more addresses consonant with the protocols of the at least one base network wherein the one or more addresses identify one or more base network entities closely correspondent to at least one of the at least two entities.

Abstract: A customer premise equipment (CPE) device operating in a combined bridge/router mode is disclosed herein. The CPE device may implement a PPP-based bridge in conjunction with a wide area network (WAN) client (e.g., a PPPoE or PPPoA client) to configure and establish a PPP-based link between the CPE device and an access concentrator connected to a WAN, eliminating the need for a WAN client at an end user device on a local area network (LAN) connected to the CPE device. The CPE device further may be adapted to assign a global IP address (e.g., the global IP address assigned to the CPE device) to the end user device, thereby facilitating data communication between the end user device and the WAN without requiring the use of network address translation (NAT) or a similar process at the CPE device.

Abstract: The invention relates to ATM systems, and particularly to mobility and call control management therein. A wireless ATM network comprises at least on ATM switch, and base stations connected to the ATM switch by a user-network-interface interface. In addition, at least one controlling network element of a conventional PLMN network, such as a mobile telephone exchange or a base station controller, which is responsible for the mobility management and call control, is connected to the ATM network by the UNI interface. A permanent virtual channel is provided between the base station and the controlling PLM element for PLM-specific signalling (signalling related to, for example, call control, mobility management or radio resource management). The ATM switch therebetween forwards the signalling without interpreting it in any way. The PLMN element remotely controls the ATM switch to switch a virtual connection between the base station and another point according to the ATM standards.

Abstract: The invention provides a system and method for sharing packet traffic load among a plurality of possible paths. Each packet is associated with a flow, and a hash value is determined for each flow, so as to distribute the sequence of packets into a set of hash buckets. The hash value has a relatively large number of bits, but is divided by the number of possible paths so as to achieve a relatively small modulus value; the modulus value is used to index into a relatively small table associating one selected path with each entry. The modulus value is determined by a relatively small amount of circuitry, simultaneously for a plurality of moduli, and one such modulus value is selected in response to the number of possible paths.

Abstract: An ATM switching node has an ATM switch (30) to which at least one inter-node physical link (56) is connected. In addition, a cell handling unit (32) connected to the ATM switch has a centralized queuing resource (230) which queues ATM cells which are to be routed through the ATM switch for transmission from the node on the physical link. ATM cells destined for the physical link from the queuing resource are discharged from the queuing resource in accordance with a parameter of the physical link. The parameter is preferably the capacity (e.g., transmission rate) of the physical link. In the illustrated embodiment, the node is one of the following nodes of a cellular telecommunications network: a base station (42); a base station controller (44); a mobile switching center (46).

Abstract: A switch queue predictive protocol (SQPP) includes a packet switching system including: a switch fabric having a cross-point switch, and a plurality of line cards, each coupled to the switch fabric. A cross-point buffer is located at each cross-point of the cross-point switch. The switch fabric also includes a plurality of actual available queue space tables (AAQSTs), each identifying the actual queue space available in a row of the cross-point buffers. Each of the line cards includes an input buffer, an output buffer, and a predicted available queue space table (PAQST) identifying predicted queue space available in a corresponding row of the cross-point buffers. Packet information is transmitted from a source line card to the switch fabric only if available queue space is predicted by the corresponding PAQST. The switch fabric uses the AAQST to update the PAQST after packet information is transmitted to a destination line card.

Abstract: The present invention provides a system and method of identifying a failure location in a datapath in a communication element, the datapath traversing from an ingress point through at least a first component to an egress point. In an embodiment the method comprises: providing a diagnostic cell to adapted to be inserted at a startpoint upstream of the first component in the datapath; providing at least a first diagnostic cell counter module adapted to be associated with a first location in the first component, the first diagnostic cell counter module being adapted to recognize when the diagnostic cell passes the first location and being adapted to track passage of the diagnostic cell past the first location; inserting the diagnostic cell into the datapath at the starting point; and analyzing the diagnostic cell counter module to identify the failure location in the datapath.

Abstract: For transporting data packets of a data stream between a packet-oriented network (LAN) and a channel-oriented data stream processing module (VMOD), a data stream controller (ST) is provided which, via a data channel allocation module (VMUX), accesses an interface module (PS) for exchanging the data packets with the network (LAN) and/or accesses the data stream processing module (VMOD). The data stream controller (ST) transmits a data channel allocation information item (DKl1, DKl2) to the interface module (PS) and/or to the data stream processing module (VMOD). Using a data channel allocation information item (DKl1, DKl2) in each case transmitted, the data packets are transmitted directly between the interface module (PS) and the data stream processing module (VMOD), bypassing the data channel allocation module (VMUX).

Abstract: Embodiments of the present invention relate to portions of a switch fabric having a single logical stage and at least one physical stage. In addition, the data paths and the control paths of the switch fabric can be decoupled thereby allowing additional processing to be performed than would otherwise be the case with control rates that matched the high data rates. In other words, data cells received on high speed links can be spread over many lower speed links; consequently, the data cells can transit the switch fabric at that high speed while the control information associated with the data can be processed at that lower speed. Because the control information can be processed at a lower speed (associated with the control path), the control information can be processed over a greater period of time.

Abstract: In an ATM (Asynchronous Transfer Mode) switch circuit, use efficiencies of address storage memories are increased even when a total number of output ports is increased. The ATM switch circuit is arranged by an ATM cell buffer memory, an ATM cell managing unit, an address storage memory, an empty address managing unit, and also a buffer address managing unit. In this ATM switch circuit, the address storage memory may be commonly used with respect to the output ports. As a result, since the length of the address chain corresponding to the output ports may be adjusted in accordance with the use frequencies of the output ports, the address storage memory can be effectively used, depending upon a plurality of output ports.

Abstract: The invention discloses an information switch, which comprises a management system, a core switching system and an information routing system. The core switching system at least comprises an information bus, a switching module and a switching management module. The information bus comprises an access bus (D-Bus) for connecting with device access gateways, a service bus (S-Bus) for connecting with service gateways, a management bus (M-bus) for connecting with the management system, and a routing bus (R-Bus) for connecting with the information routing system. The management system and the information routing system are connected with core switching via the information bus to perform, respectively, system management and routing management.

Abstract: The invention discloses a Platform of Information Switch that adapts for switching the integrated information between the different user terminals and the different services terminals. The Platform includes a Device Access gateway for connecting user terminals and switching the correspondent information, an Information Switch for implementing concentrated management and the integrated information switching, and a Service Gateway for interfacing with the service terminals. Wherein the Information Switch consists of a Management System, a Core Switching System and a Platform Routing System; wherein the Core Switching System includes an Information Bus, Switching Modules and a Switching Management Module. The Device Access Gateway and Service Gateway are both connected to the Information Switch via the Information Buses. The Information Switching Platform of present invention can transform the complex information switching process between the user terminals and service terminals to a simple platform operation.