Abstract: An ATM—InfiniBand™ router is configured for interfacing between an asynchronous transmission mode (ATM) network and an InfiniBand™ network, without a necessity of intermediate transport on a packet based network such as an Internet Protocol (IP) network. The router includes an ATM processor and a host channel adapter. The ATM processor is configured for generating ATM cells streams based on received InfiniBand™ packets, and recovering InfiniBand™ packet data from received ATM cells. The host channel adapter is configured for receiving the InfiniBand™ packets from the InfiniBand network and providing at least the payload data to the ATM processor, and outputting the recovered InfiniBand™ packet data onto the InfiniBand™ network. In addition, the ATM processor and the host channel adapter may be configured for mapping the ATM cells and the InfiniBand packets on prescribed virtual circuits and prescribed InfiniBand™ connections, respectively.

Abstract: A Packet Voice Gateway (PVG) system and related method are disclosed wherein a single ATM circuit emulation board performs conversion of Asynchronous Transfer Mode (ATM) formatted cells received from an ATM packet network to a Time Division Multiplexed (TDM) format for delivery to a circuit switched network, including AAL 1/2 bearer cells, AAL 3/4 data cells, AAL5 signaling cells, and raw AAL0 cells. In particular, as ATM cells are received from the ATM packet network, their cell headers are translated according to a predetermined translation scheme. The ATM cells are then processed according to their translated cell headers, which allows the cells to be handled according to their payload type.

Abstract: A network processing device includes multiple control processors or applications. One or more of the multiple processors generates an address resolution request. A network interface is adapted to detect a reply to the address resolution request and broadcast the detected address resolution reply to the multiple control processors in the network processing device.

Abstract: An improved data transmission system including multiple local area networks (LANs) coupled by a hub that further includes multiple LAN adapters coupled to the LANs, and an asynchronous transfer mode (ATM) crossbar switch coupling all LAN adapters. LAN data frames are converted into concatenated slots of an identical size and transmitted through the ATM crossbar switch. At least the requesting LAN adapter coupled to the LAN to transmit LAN data frame includes a serial communication controller (SCC) that converts a received LAN data frame into serial data. The SCC also includes a means for converting serial data to LAN data frames.

Abstract: A VC merging apparatus and a method of establishing or terminating connection as well as a recording medium storing instructions for embodying the same method are disclosed. The method of establishing/terminating connection includes the steps of; a) determining a kind of connection with reference to connection parameters according to an order of connection establishment or termination from a central controller; b) establishing/terminating a multi point-to-point connection based on ingress/egress connection labels, if the kind of the connection is a VC merging connection; and c) establishing/terminating a point-to-point connection based on the ingress/egress connection labels, if the kind of the connection is a non-VC merging connection.

Abstract: A circuit simulation apparatus is disclosed by which, even if an STS-N frame of an abnormal length is detected by a reassembly buffer, the frame length can be compensated for while preventing an overflow of the reassembly buffer. When an STS-(N×M) frame formed by multiplexing M STS-N frames formed from different channels is cellularized into ATM cells or M different STS-N frames assembled from ATM cells are multiplexed into an STS-(N×M) frame, an ATM cell sync signal and ATM cell data from a buffer section are outputted as a frame pulse signal and frame data from a reassembly section to a circuit termination section, and frame length compensation of the frame pulse signal and the frame data is performed by the reassembly section.

Abstract: An ATM cell transmitting device capable of multiplexing a plurality of time slots with a single ATM cell by using an AAL2, which includes a time slot input unit for switching a plurality of time slots; a packet processing unit for receiving the switched time slot data and forming a CPS packet; a CAM for receiving header information of the CPS packet and outputting the ATM buffer number; an ATM cell transmitting unit for storing the data of the CPS packet according to the ATM buffer number outputted from the CAM, to form ATM cells; and a controlling unit for performing a general controlling operation.

Abstract: The present invention provides a unitary mechanism for high speed end-to-end telecommunication traffic using an Asynchronous Transfer Mode (ATM) architecture for convergence of video, data and voice in an SOHO application using a DSL router. An ATM module (101) for convergence of the telecommunications traffic includes an ATM processor (120) configured to perform QoS, OAM processing and switching in an ATM system. Function modules (102,104,105) and data ports (106,108) are configurable to transceive data, voice and video traffic in which the traffic is packetized in ATM data cells.

Abstract: A method for transferring information over a data connection in accordance with a protocol stack (206, 210) comprising first and second protocol layers. The method is characterized in that a protocol identifier is created the value of which is determined by means of the first protocol layers of said protocol stack and which is delivered to the second protocol layers of said protocol stack.

Abstract: A cell processing apparatus which executes processing for switching a short-packet in AAL Type 2 cell format has a separation processing unit and a restoration processing unit. The separation processing unit splits a short packet, which has a length greater than a length L (=48) bytes capable of being accommodated in one ATM cell, into two portions, accommodates significant data containing (1) one of the short-packet portions and (2) short-packet length information, in a payload area of the first ATM cell, accommodates remaining significant data including another short-packet portion, which could not be accommodated in the first ATM cell, in a payload area of the second ATM cell, and inputs the first and second ATM cells to an ATM switch.

Abstract: A method and apparatus for transmitting voice, voiceband data and phone signaling is described. Analog voice, voiceband data and phone signaling are converted into their corresponding digitized version. The digital voice, digitized voiceband data, and digitized phone signaling may be transported as AAL2 packets via an LAN that follows an LAN protocol that supports levels of transmission priority. The LAN protocol may be, for example, HomePNA. The packets may be formatted in a manner similar to other networking protocols for transmitting digitized voice, digitized voiceband data and digitized phone signaling, such as AAL2. The use of AAL2 packets instead of voice over IP packets and techniques allows use of simpler less costly components and a straightforward interworking at the residential gateway device connected to the WAN via DSL using the emerging loop emulation service.

Abstract: The present invention provides an apparatus, system and method for receiving asynchronous transfer mode (ATM) data cells on an ATM adaptation layer (AAL) configured connection within an ATM system comprising a digital signal processor (DSP) sub-system (412) and a host processor (414). The receiver interfaces directly with the DSP sub-system (412) (which converts the digitized voice samples into voice signals) and the host processor (414) (which performs AAL2 signaling and layer management functions). The receiver filters the AAL2 signaling and management packets from the AAL2 voice packets using a host programmable CID filter (550) and UUI filter (560). A match from either filter (550,560) enables the packet to be forwarded to the host processor (414). If no match is made in either filter (550,560), then a look-up is performed in a receive CID look-up table and the packet is forwarded to the DSP sub-system (412) on a look-up match.

Abstract: The current invention provides a system for transmitting and receiving information comprising a first layer transceiver device, a plurality of second layer transceiver devices, and an interface connecting the first layer transceiver device and the a plurality of second layer transceiver devices. The first layer transceiver device and the a plurality of second layer transceiver devices transmit and receive data over the interface and a time division multiplexed (TDM) signal that indicates the availability of one of said second layer transceiver devices.

Abstract: A mobile communication system introducing ATM, AAL2 and IMA techniques in order to efficiently transmit high-speed information and multimedia traffic having various properties, and to increase transmission efficiency in a limited transmission link or transmission band. An ATM cell processing device for a mobile communication system comprises an ATM interface for receiving ATM cells dispersedly transmitted or distributed over a plurality of physical links and restoring the received ATM cells into one ATM cell stream; an AAL2 (ATM Adaptation Layer 2) cell processor for switching at least one AAL2 packet multiplexed within each ATM cell in the ATM cell stream according to routing information provided during call setup, multiplexing the switched AAL2 packets according to ATM connections, and creating an internal ATM cell having the same format as the received ATM cells; and an ATM switch for switching the internal ATM cell according to the routing information.

Abstract: A data source has a data converting part for converting inputted data to predetermined data packets. A data buffer stores the data packets. A descriptor list stores a descriptor to which predetermined addresses are added, where a method of sending the data packets is described. A FIFO stores the predetermined addresses in a first-in first-out mode. A data sending part receives start instructions from the data converting part, refers to a predetermined address in which reference is not made yet in the FIFO, fetches data packets corresponding to the descriptor from the data buffer in accordance with a method of sending the descriptor indicated by the predetermined address, generates a send packet from the data packet and outputs the data packet. An end-of-send notice to the data converting part is also send when the output of the send packet is ended.

Abstract: Transporting a variable length AAL CPS packet over a non-ATM-specific bus includes determining a variable length AAL CPS packet and transmitting the variable length AAL CPS packet over a non-ATM-specific bus. A first part of the variable length AAL CPS packet is received and a length of the variable length AAL CPS packet is determined and then used to determine synchronization information. Reception of the variable length AAL CPS packet continues, and the synchronization information is used to determine that reception of the variable length AAL CPS packet is complete.

Abstract: The ATM equipment includes a voice circuit interfacing section connecting to voice devices, an interchange channel interfacing section connecting ATM lines, a cell composing and decomposing section celling voice signals from the voice circuit interfacing section and also decelling a cell received from the interchange channel interfacing section to produce voice signals, a SVC control section performing connecting/cutting control of a telephone call path in the ATM lines by a switch type virtual connection method, and a main control section connecting the interchange channel interfacing section to the voice circuit interfacing section when the voice devices are called in the case when the SVC control section performs the connecting and cutting control of the telephone call path in the ATM lines.

Abstract: A method and apparatus for communicating fixed-length data packets through an intermediate computer network. The method comprises receiving a data packet characterized by a fixed-length packet format, and constructing a remnant packet characterized by the fixed-length packet format, which includes inserting at least a portion of the data packet routing information in the data field of the remnant packet. The method also comprises communicating the remnant packet, receiving the remnant packet and constructing a reconstructed data packet, which includes Inserting data packet routing information obtained from the remnant packet in the address field of the reconstructed packet. The apparatus comprises a communication network node comprising a receiver, transmitter, computer memory and processor for performing the foregoing method steps.

Abstract: Upon receipt of a synchronization request from the CPU, the AAL1 device of the act system causes its cell forming section to extract the allocation position information for the SAR-PDU payload about a particular time slot in the current frame and, via the synchronization information send/receive section, transfers the information to the AAL1 device of the standby system. The AAL1 device of the standby system causes its operation processing section to calculate the allocation position of a particular time slot in the next frame for the SAR-PDU payload based on the above allocation position information. The AAL1 device of the standby system starts allocation of the data of and following a particular time slot of the next frame to the SAR-PDU payload starting from the position indicated by the calculation result.

Abstract: A system for controlling an international mobile telecommunications—2000 (IMT-2000) base station includes: a base transceiver station (BTS) for providing asynchronous transfer mode (ATM) cells; an asynchronous transfer mode (ATM) switch for performing a switching of the ATM cells; and a BTS interface subsystem (BIS) for interfacing the base transceiver station (BTS) with the asynchronous transfer mode (ATM) switch, wherein the BTS interface subsystem (BIS) includes a plurality of assembly symbol subsystems (ASSs) for receiving the ATM cells transmitted from the base transceiver station (BTS) and performing a type conversion of the ATM cells to output a type converted ATM cells to the asynchronous transfer mode (ATM) switch.

Abstract: An asymmetrical digital subscriber line (ADSL) system for transferring an analog audio signal and high speed digital data on the side of a subscriber, from and to a station, through one ADSL subscriber line, includes an apparatus on the subscriber side which converts an analog audio signal into a digital audio signal. The apparatus includes a line concentrator to concentrate the audio signal together with high-speed digital data by time division, and supplied to the subscriber line after modulation. An apparatus on the station side simultaneously supplies a signal received from the subscriber side to an analog telephone network, and supplies high-speed digital data to a high-speed digital data network. Each digital audio signal as well as each high-speed digital data is converted into asynchronous transfer mode (ATM) cells in each respective line concentrator, and each destination address is attached to the ATM cells.

Abstract: A system for controlling a bandwidth when receiving and reassembling a consecutive data stream transferred while segmented by AAL1 format cells which enables correct determination of non-P and P formats and reassembly of cells even when error arises in multiple bits including the CSI bit of an AAL1 cell or when adding dummy cells and thereby enabling prevention of a gap in data in a frame, comprising, in a data reassembly unit which reassembles received cells, an 8-cell buffer for storing 8 cells of a cycle of a sequence count (SC) of 0 to 7 and sending the cells out to a later stage after a check unit of a sequence number (SN) field confirms normalcy of the cells and a control unit for control so that the number of P format cells stored in the 8-cell buffer becomes 1 cell when 8 cells are stored in the 8-cell buffer.

Abstract: First and second partially filled ATM cells are removed from a cell stream and merged into a third ATM cell. The third ATM cell may then be inserted back into the cell stream. The third ATM cell may include header information indicative of the number of partially filled ATM cells from which it was created. To accommodate these operations, a data communication device, such as an ATM switch, is configured to identify partially filled ATM cells within an ATM cell stream. The device is also configured to merge at least two of the partially filled ATM cells into a merged ATM cell and to insert the merged ATM cell back into the ATM cell stream. Identifying partially filled ATM cells may involve use of a lookup table stored in a computer readable medium and indexable using logical connection identification information. The scheme can be used on a link-by-link basis within an ATM network or across multiple hops within such a network for combining cells traveling along a common route.

Abstract: A system for communicating information includes a master UTOPIA device having a receive transfer controller operable to control reception of data by the master UTOPIA device and a transmit transfer controller operable to control transmission of data from the ATM switch. The system also includes a slave UTOPIA device having at least one memory area. The slave UTOPIA device includes a receive poll controller operable to determine whether the memory area is available to transmit data for receipt by the master UTOPIA device and further operable to communicate the result of the determination to the receive transfer controller. The slave UTOPIA device also includes a transmit poll controller operable to determine whether the memory area is available for receiving data to be transmitted by the master UTOPIA device and further operable to communicate the result of the determination to the transmit transfer controller.

Abstract: Methods and apparatus for extending the transmission range of a UTOPIA ATM (or packet) interface include providing two UTOPIA extension devices, one for coupling a PHY layer device to a transmission cloud and one for coupling an ATM layer (or LINK layer) device to the transmission cloud. Each device includes a UTOPIA interface emulator, a link controller, and a media transceiver. The media transceiver can be made to support various media such as a backplane, copper cable, optical fiber, or a wireless medium. The UTOPIA extension device preferably includes a UTOPIA inlet buffer, a UTOPIA outlet buffer, an inlet clock decoupling buffer, an outlet clock decoupling buffer, and a flow control module. The UTOPIA inlet and outlet buffers are used for traffic management and the clock decoupling buffers allow the UTOPIA interface emulator and the link controller to operate in different clock domains. The link controller provides error control and backpressure delivery to support flow control.

Abstract: A method and system for adaptively controlling level of a receiver buffer in a client in a multimedia streaming network. The multimedia streaming network has a server for providing streaming data to the client. The server is responsible for adapting the transmission rate to the reception rate or congestion control, and for adapting the sampling rate to the transmission rate. Thus, the server manages the shift and keeps it within the rate adaptation operating range. The client is responsible for compensating for the packet transfer delay variation, which is also known as network jitter. The client is also responsible for setting parameters of the server rate adaptation operating range. The client chooses and sends the shift parameters to the server, but it is up to the server to adapt its encoding rate or transmission rate when responding to the parameters.

Abstract: Digital data of a specific plurality of data channels (K0-Kn) of the input side supplied in parallel form are converted into a serial data stream (D) and are in turn divided into parallel data channels (K0-Kn) of the output side upon reception with the assistance of a corresponding demultiplexing. In order to enable the allocation of the bits of the data channels (K0-Kn) of the input side read-in in parallel without great circuit-oriented outlay and without additional synchronization information, it is proposed to monitor the serial data stream (D) transmitted in the form of ATM cells for the occurrence of a specific bit sequence that is already transmitted with every cell format. The position of the individual bits of the corresponding data channels (K0 Kn) in the serial, optical data stream can be determined on the basis of this characteristic bit sequence, so that a correct parallelization at the data stream (D) at the output side is possible.

Abstract: The present invention relates to a method and apparatus for modification of a connection between a transmitting subscriber and a receiving subscriber in a communications system, which is based on data compression, within a switching center, with a data frame which arrives in the switching center and is formatted on the basis of a framing protocol being replaced independently of the length of the data frame by a new data frame formatted on the basis of the framing protocol, such that additional information can be fed into the connection without any loss of quality or time.

Abstract: A low-speed subscriber extension type system interfaces with a switch link through a system backboard, receives a cell transmitted from the switch link, then multiplexes/demultiplexes the received cell through a UTOPIA interface after a switch link and ATM layer processing. A low-speed subscriber physical layer board transmits data, which is physical layer-processed in the low-speed subscriber board, to a low-speed subscriber, and serializes a cell transmitted from the low-speed subscriber board into a clock and data before transmission. Each low-speed extension board exchanges a cell with the low-speed multiplexing/demultiplexing board through a low-speed bus, performs physical layer processing on the cell of the corresponding board, and transmits a received cell to the corresponding subscriber through the low-speed extension physical layer board.

Abstract: A method of forming an ATM cell having a fixed length from CPS packets according to the AAL2 protocol includes the steps of placing a header at a beginning of the ATM cell and then packing the ATM cell with the payload of the CPS packets. ATM cells are formed until the payload of the last CPS packet has been packed into an ATM cell. A TimerCU is not triggered until the last available CPS packet has been processed. If the last ATM cell formed is not full, it is padded until it is full.

Abstract: A method and apparatus are described for interfacing between a physical layer (PHY) interface and a bus. For the receiver side, a downstream clock signal from a physical layer transceiver and a cell available signal in a first plurality of receiver signals from the PHY interface are received. Bus receiver signals to the bus and a second plurality of receiver signals to the PHY interface are generated using the downstream clock signal and the cell available signal. For the transmitter side, an upstream clock signal from a physical layer transceiver, first plurality of bus transmitter signals from the bus, and a cell available signal in a first plurality of PHY transmitter signals from the PHY interface are received. A second plurality of bus transmitter signals to the bus and a second plurality of PHY transmitter signals to the physical interface are generated using the upstream clock signal and the cell available signal.

Abstract: An asynchronous transfer mode (ATM) switch includes a switch memory having a plurality of discrete queues. A queue is dedicated to a connection in which a traffic stream is transmitted in cells and an inverse multiplex ATM (IMA) format. A switch controller is operable to receive a plurality of cells, to identify cells for the connection, to queue cells for the connection in the queue based on order information received with the cells, to reconstitute from the queue the traffic stream, and to switch the traffic stream and the ATM cells.

Abstract: An architecture for use in controlling and managing optical functions and optical devices. A common microprocessor based control layer coordinates commands between optical devices and a user station. The control layer executes an operating system which handles data flow in the control layer. Generic commands from the user station causes the operating system to call specific subroutines the produce digital commands. These digital commands are then passed to a digital layer that interfaces with an analog layer. The analog layer is specifically developed to interface and work with a specific optical device. The analog layer thus directly controls the optical device including changing its settings based on input from the digital layer.

Abstract: A method and apparatus for providing a low 2-point Cell delay variation (CDV) for cell or packet transmissions via a TDMA or TDM network, where the cells or packets are assembled in bursts or slots for transmission. In order to permit a TDMA or TDM network that carries cells or packets between source and destination pairs to guarantee that a desired 2-point CDV will be met, for example a 3 ms CDV required for Class 1 traffic, each cell is associated with a transmitted TDMA or TDM frame. Using a time counter and a frame counter in a transmitter interface, the cell or packet has appended to it a time count and a frame count that is sent across the network and made available to the receiving TDMA/TDM terminal. The receiving terminal uses this timing information to perform traffic shaping of the cell or packet stream, thereby reducing the impact of the 2-point CDV as well as the effect of cell clumping prior to distribution on a terrestrial network.

Abstract: Computers sending IP datagrams over an ATM network are generally capable of operating multiple simultaneous virtual circuits over the network. However, in doing so, they normally only set up one virtual circuit to each destination IP address so that in order to test the simultaneous operation of N virtual circuits by a computer under test, N target computers are needed. To enable a single computer (T) to provide the destination endpoints for multiple virtual circuits (SVC) from a computer (M) under test, both computers (M,T) are allocated a plurality of virtual IP addresses (IM(j),IT(i)) and the target computer (T) is additionally provided with a module running address-changing processes (70,71) that avoids the IP layers (20) of both computers from rejecting IP datagrams (25A,25B) addressed with the virtual IP addresses.

Abstract: A system for transmitting wireless messages from a Wireless Access Internet Network architecture for providing users a plurality of wireless protocols to access a communications network. The architecture comprises a wireless client for providing an authentication message. The wireless client includes a radio link adaptation layer and a radio interface, and the radio link adaptation layer adapts to a plurality of wireless protocols. The architecture further includes a wireless server in communication with the wireless client. The wireless server includes a charging module, a Home Location Register (HLR) signaling module, a Domain Naming System (DNS)/Dynamic Host Configuration Protocol (DHCP) Remote Authentication Dial-in User Service (RADIUS) module, a radio link adaptation layer, and a radio access point in communication with the radio interface. Additionally, the architecture includes a data network in communication with the wireless server.

Abstract: A method for deadline based scheduling for asynchronous transfer mode adaptation layer, type 2, messages, in accordance with the present invention, includes calculating, for a list of channels, a last possible transmit time for messages on each of the channels in accordance with system criteria. The list of channels is prioritized in an ordered list based on a last possible transmit time for the messages for each of the channels. The messages for the channels are transmitted in accordance with the ordered list. Also disclosed is a method for requesting for quality of service.

Abstract: ATM is used as a transport and switching mechanism in a hybrid STM/ATM network (20), while the signaling remains normal narrowband signaling. The narrowband signaling is transported on permanent paths over ATM connections, and the narrowband speech channels are transported on ATM and switched on a “per call basis” (on-demand) through an ATM switch. The hybrid STM/ATM network has an access node (22) which services narrowband terminals and which generates a signaling message in connection with call setup. A translator (50) formats the first signaling message into ATM cells so that the first signaling message can be routed through an ATM switch (40) to a circuit switched (STM) node (30). The circuit switched node (PSTN/ISDN) sets up a physical connection for the call and generates a further signaling message for the call, the further signaling message pertaining to the physical connection.

Abstract: An ATM switching apparatus applicable to a short cell including an ATM-SW outputting a cell from an output path corresponding to a cell identifier, an interface unit, a demultiplexer, and a multiplexer. The interface unit sets, when a cell storing a plurality of short cells is inputted, the cell identifier so that the cell is transmitted from ATM-SW to the demultiplexer, and outputs the cell toward the ATM-SW. The demultiplexer receives the cell and produces a plurality of partial fill cells, and outputs them, while setting an identifier of each partial fill cell, the partial fill cell is outputted. The multiplexer receives a plurality of the partial fill cells, produces a cell storing a plurality of the short cells in accordance with the identifiers and outputs the cell to the ATM-SW.

Abstract: A method of regenerating a point-to-multipoint interface on a point-to-point interface in an ATM (Asynchronous Transfer Mode) network configuration is provided. It is determined from which circuit an ATM cell originated by using pre-pending byte(s) and/or user defined byte(s); individual tag(s) are assigned; and at least one tag is decoded corresponding to the point-to-multipoint address.

Abstract: First and second partially filled ATM cells are removed from a cell stream and merged into a third ATM cell. The third ATM cell may then be inserted back into the cell stream. The third ATM cell may include header information indicative of the number of partially filled ATM cells from which it was created. To accommodate these operations, a data communication device, such as an ATM switch, includes means for identifying partially filled ATM cells within an ATM cell stream. The device also includes means for merging at least two of the partially filled ATM cells into a merged ATM cell and means for inserting the merged ATM cell back into the ATM cell stream. The means for identifying partially filled ATM cells may comprise a lookup table stored in a computer readable medium and indexable using logical connection identification information. The scheme can be used on a link-by-link basis within an ATM network or across multiple hops within such a network for combining cells traveling along a common route.

Abstract: The present invention relates in general to an interface module of an asynchronous transfer mode(ATM) terminal using the ATM for transmitting information, particularly to an ATM interface module having an interfacing function required to ATM communication terminals which supports other services and capable of interfacing with the other upper layer service modules by changing an interface module software according to a respective service type.

Abstract: An integrated ATM/packet segmentation-and-reassembly engine for handling both packet and ATM input data and outputting packets containing information from both the packet and ATM input data. The integrated ATM/packet segmentation-and-reassembly engine is also configured for receiving packets containing information destined for transmission as ATM cells and information destined for transmission as packets, perform the segregation function and segmentation function on the information destined for transmission as ATM cells in order to output both ATM cells and packets. Architecture includes the ability to output both ATM cells and packets on a single optical fiber.

Abstract: A system for an interface between a physical layer and a communication network. The system comprises a UTOPIA 3 physical layer receiver (23) operable to receive information from a physical layer device (10), a UTOPIA 2 to UTOPIA 3 controller (24) operable to receive data from UTOPIA 3 physical layer receiver (23) and convert it to a UTOPIA 2 format; and a UTOPIA 2 master receiver(25) coupled to UTOPIA 2 to UTOPIA 3 controller (24) and operable to receive information from the UTOPIA 2 to UTOPIA 3 controller (24) and send it to the higher communication network.

Abstract: A network processing device intelligently interleaves packets for read and write access requests in a multibank memory. The system intelligently writes packets into the different memory banks so that the same memory bank is not used for back-to-back packet reads. The last memory bank write is determined for each output queue. This write information is used in combination with look ahead packet read information for a group of packets from the next output queue scheduled to read packets from memory. The scheduler uses all this information to avoid any back-to-back packet read, write, or read/write accesses to the same memory bank. This intelligent packet interleaving scheme preserves memory bus bandwidth normally wasted accessing the same memory banks.

Abstract: A communications device and method thereof, a communications system and a recording medium to transmit information for control exceeding one byte. A synchronizing information adder stores in a CPCS-PDU trailer, synchronizing information to control the operation of a receiver. An MPEG/ATM converter transmits a packet of data converted from the synchronizing information stored in the synchronizing information adder.

Abstract: A telephone switch-integrated modem pool and broadband access concentrator provide improved data network access through a PSTN local loop. Rather than simply cascading data as TDM traffic through the PSTN, plural switch-integrated modems, a broadband access concentrator, and a broadband pipe are used to route data traffic between local loop subscribers and one or more data network service providers. Advantageously, point-to-point connections are maintained between subscriber and service provider equipment in order to enable continued use of high level subscriber-provider protocol service negotiation (such as PAP/CHAP, NCP and the like). LCP (link layer) management and translation between the asynchronous subscriber-modem pool link and the synchronous provider-modem pool link are handled transparently by the broadband access concentrator.

Abstract: A switching method, switching equipment and a switching network are provided by each of which the data is transferred economically and with small transfer delay and the unit to which the data is to be transferred is selected every channel. In AAL type apparatuses, CPS packets a, b, c and d in which the voice data signals are encoded and the like are processed with an AAL type 2 to be multiplexed in ATM cells. The ATM cells in which the CPS packets are multiplexed are inputted to switching equipment. By a voice data decode unit within the switching equipment, for example, the CPS packets a and b are decoded into PCM codes a′ and b′, respectively. ATM cells of an ATM type 1 in which the CPS packets a′, b′, y′ and z′ are multiplexed are generated by a channel switching unit within a network to be suitably inputted to AAL type 1 apparatuses.

Abstract: The present invention enhances synchronization when frames are transmitted over an intermediate network by incorporating a synchronization code along with a data frame in a transport frame used to transport the data frame over an intermediate network. The synchronization code is generated and used to check framing and correct framing errors when the data frames are extracted from the transport frames.

Abstract: A traffic concentrator (40) aggregates traffic in a radio access network. The traffic concentrator comprises an Asynchronous Transfer Mode (ATM) switch (42) and a control node (44) associated with the ATM switch. The Asynchronous Transfer Mode (ATM) switch which performs a switching operation for switching unspecified bit rate (UBR) virtual channels (VCs) carrying user traffic between plural virtual paths (VPs). The user traffic is transported as ATM Adaptation Layer 2 (AAL2) connections over the unspecified bit rate (UBR) virtual channels (VCs). The control node is arranged to process AAL2 signaling messages which concern the AAL2 connections included in the VCs for which the ATM switch performs the switching operation. The AAL2 signaling messages are carried in virtual channels which do not carry the user traffic and which are either originated or terminated at the control node. In one example implementation, the traffic concentrator aggregates traffic of plural base stations of the radio access network.