Abstract: In a distributed data processing system each component is provided with an object orientated platform together with instantiations of a generic network object for each application involving data transmission, enabling it to run a multiplexing/demultiplexing object appropriate to each application being processed. This effectively provides multiple concurrent data “pipes” over a single physical/logical connection.

Abstract: The invention relates to a switching device for switching input data frames (IDF) from a plurality of N input lines (i1, i2, . . . in, iN) to output data frames (ODF) on a plurality of M output lines (o1, o2, . . . on, oM). The switching device contains a number K of switch pattern units, each containing a specific switch pattern. A number K of frame store memories (FSMj) each store all input data frames from all input lines in every frame period. Each frame store memory is used for selecting bits to a sub-group of M/K output lines. The parallelly working units (u1, u2, . . . uK) each sequentially select a plurality of M/K bits from the stored input data frames and simultaneously assign the selected bits to the output data frames on the respective sub-group of output lines. The selection and assigning of bits in each unit is performed at a M/K times higher clock rate than the bit rate on the input data lines.

Abstract: A method implemented by a subscriber unit for suppressing selective communications during communication rate modification, wherein the subscriber unit is coupled between first and said second communicating nodes, includes establishing a communication channel between said first and said second nodes at a first data rate; detecting a transmission from the first node on the channel; determining whether the transmission requires a change in data rates to a second data rate; switching the communication channel to said second data rate; and blocking transmissions from the second node until the second communication rate has been established.

Abstract: A base station which prevents the transmission of data between communicating nodes until the data communication rate required by the communicating nodes has been established selectively suppresses the confirmation tone that a receiving node sends to an originating node. The transmission of voice, facsimile or modem data is prevented until the communication path has been established at the desired communication rate. This permits the base station to reliably transport encoded data at a plurality of data rates without precise synchronization.

Abstract: A subscriber unit which prevents the transmission of data between communicating nodes until the data communication rate required by the communicating nodes has been established selectively suppresses the confirmation tone that a receiving node sends to an originating node. The transmission of voice, facsimile or modem data is prevented until the communication path has been established at the desired communication rate. This permits the subscriber unit to reliably transport encoded data at a plurality of data rates without precise synchronization.

Abstract: The present method provides a fixed bandwidth for communicating information by way of a DSL service over a circuit switched telephone network. It includes the steps of setting a transmission bandwidth at a transmitting end of a DSL service over a circuit switched telephone network; dividing out the desired transmission bandwidth into multiple data connections each corresponding to an available voice connection in the circuit switched telephone network; delivering information at the desired transmission bandwidth by way of the multiple data rate connections; and combining the multiple data connections at a receiving end of the DSL service to provide the information at the desired transmission bandwidth.

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 channel reassignment is accomplished without causing a momentary interruption resulting from a mismatch in pointer value. After a bridge setting is made between a source channel and destination channel at a first node designated as the starting point of a reassignment section, messages B/C are sent out from the first node toward a fourth node designated as the end point. Second and third nodes that received the message C each transfer the message to the next node after interlinking the pointer operation of the destination channel with the source channel. The fourth node that received the message C sends out a message D toward the first node after changing the setting of a TSA. The second and third nodes that received the message D transfers the message to the next node after clearing the pointer interlinking operation.

Abstract: A private base station (231) provides communication directly between a cellular mobile telephone (201) operable within a cellular network and a public switched terrestrial network (116). The base station is configurable to establish communication to a mobile telephone while minimizing interference with similar base stations. The base stations may transmit on similar frequencies but within different time division multiplexed time slots.

Abstract: A method for virtual end nodes indicates in routing information (51) that the routing information is a “special access” to a virtual end node (60). An RF network device then inserts the identity (52) of the physical end node into user information (62) and insert a filter field for selecting which virtual end node(s) are to respond to the user information (63). An end node (41) determines whether the user information is for it (69-72), then the end node 41 responds to the RF network (75), otherwise the end node 41 ignores the user information.

Abstract: A method and a network for a universal transfer mode (UTM) of transferring data packets at a regulated bit rate are disclosed. The method defines a protocol that uses an adaptive packet header to simplify packet routing and increase transfer speed. The protocol supports a plurality of data formats, such as PCM voice data, IP packets, ATM cells, frame relay and the like. The network preferably includes a plurality of modules that provide interfaces to various data sources. The modules are interconnected by an optic core with adequate inter-module links with preferably no more than two hops being required between any origination/destination pair of modules. The adaptive packet header is used for both signaling and payload transfer. The header is parsed using an algorithm to determine its function. Rate regulation is accomplished using each module control element and egress port controllers to regulate packet transfer.

Abstract: Multiplexing/de-multiplexing sections are respectively provided on STM-4 substrates STM-16 substrates, STM-64 substrates to de-multiplex each of an STM-4 signal, STM-16 signal, STM-64 signal from a tributary transmission line LL into STM-1 signals. Then, transmission interfaces extending from the respective above substrates to time slot exchanging sections are all uniformed to STM-1 which is a basic transmission speed in SDH.

Abstract: A system and method for locally determining a fair allocated bandwidth for a network node configured to send and receive packets in an upstream direction and a downstream direction is disclosed. A local allocated bandwidth is allocated for locally generated network packets sent in the downstream direction. A minimum downstream available network bandwidth is determined from information received in the upstream direction. The local allocated bandwidth is adjusted based on the minimum downstream available network bandwidth and the local allocated bandwidth is used to govern whether a class of locally generated network packets are sent in the downstream direction.

Abstract: A communication switching station includes a digital switch and a sub-rate interface circuit. The switch has signal terminals including inputs and outputs, and switching circuitry, adapted to operate at a first rate, operatively connected between the inputs and outputs. The sub-rate interface circuit includes a first signal terminal operatively connected to at least one of the signal terminals of the first signal terminal and the second signal terminal, the programmable circuitry being operative at a second rate that is lower than the first rate.

Abstract: Allocation of telecommunication systems bandwidth is provided preferably in a predictive fashion. Packets are identified with particular data streams and characteristics of the data streams are used to predict probable future bandwidth requirements. Such predictions are used to allocate high-bandwidth channels, such as ISDN B channels and to close or switch channels as in accordance with predicted needs. Preferably the system is self-learning and can modify a rules base for making allocation decisions e.g. based on actual use statistics.

Abstract: A high speed packet switch (100) is provided which uses a fabric size of 128.times.128 and operates at a 2.5 Gbps rate. Parallel data transport techniques are used to obtain the 2.5 Gbps data rate while operating internal switches (160) at slower rates. The packet switch fabric is fabricated on a single ASIC using high speed CMOS.

Abstract: High transmission capacity in a twisted pair signal line, where power is limited by a power spectral-density mask and an aggregate signal power constraint, is obtained by: (1) allocating data to multitone sub-bands according to a lowest marginal power-cost per bit scheme and (2) in an environment where an aggregate power budget remains after all bits have been allocated to all sub-bands with sufficient margins to carry a bit, assigning additional bits to sub-bands with otherwise insufficient power margins to carry a single bit, by frequency-domain-spreading a single bit across several sub-bands at correspondingly reduced power levels, to permit the otherwise unacceptable noise levels to be reduced on average by despreading at the receiving end.

Abstract: A method and apparatus for an isochronous traffic of Asynchronous Transfer Mode (ATM) cells in a ring network having at least two stations (101,102) and a ring server (001). The communication within the ring is based on specific isochronous control and data cells. The control cell contains a cell header, sequence number, type of command and parameter fields. The data cell contains a header and a payload divided into N m-bit slots. The isochronous data cells are shared by a plurality of stations on the ring by allocating corresponding slotlist whose identification is carried in the parameter field. Furthermore, the server provides for each station's communication link a transmit identifier in the header associated to a reference in a list of allocated slots for transmission and a receive identifier associated to a reference in a list of allocated slots for reception.

Abstract: A system and method for dynamically provisioning digital data services. Connection setup for the digital data services is accomplished through messages transported on a common channel signaling network. These messages permit an originating user to automatically provision a data communications connection that has a dynamically adjustable bandwidth.

Abstract: A D4 channel bank data bus monitoring scheme automatically determines if a channel unit connector slot is occupied, without having to gain physical access to the interior of the channel bank cabinet and inspect the channel bank's backplane slot positions. To this end, for a respective channel unit connector slot the channel bank's transmit data bus, which is initially pulled high via a pull-up resistor, is monitored for an all `1`s state. If the data on the bus is not all `1`s, then it is inferred that a channel unit is installed. If an all `1`s state is not detected, then, during the next time slot for that channel unit, the bus is decoupled from the pull-up resistor and coupled instead to a `soft` pull-down resistor. If the data on the bus is now all `0`s, it is inferred that the previously read all `1`s condition was due to the fact that no channel unit is installed, and the channel unit connector slot is declared as empty.

Abstract: A network (10) includes a repeater (12) that can service data devices that operate using different communications protocols. The data devices (18, 20, 22) couple to the ports (34) of the repeater (12), and operate using a first communications protocol in a first domain (14). The data devices (26, 28, 30) also couple to the ports (34) of the repeater (12) and operate using a second communications protocol in a second domain (16). Information on the operation of a port (34) may be displayed using one port indicator (202) or two port indicators (300, 302).

Abstract: A function of a switch apparatus is realized as an adapter. Signaling data which cannot be processed in the adapter, is output to a mainframe bus of a computer through an AAL controller, a RAM, and a bus controller. The computer processes the signaling data and sends it to a switch adapter through the mainframe bus. The signaling data is input to an 8.times.8 switch through the bus controller, the RAM, the AAL controller. Usual user information is switched by a PHY unit, a TC/ATM controller, an address converter, and the 8.times.8 switch. By connecting the switch adapter to the computer, it is possible for the computer to operate as a switch apparatus without damaging its function.

Abstract: A convolution decoder includes, for each state S of a shift register receiving an initial signal, an add-compare-select circuit which provides a one-bit decision for selecting either one of states 2S or 2S+1 as a state preceding the current state S. A decoding element traces back the memory according to a path indicated by the decisions stored in the memory in order to restore the succession of states of the initial signal. Each calculation cell associated with a state S further includes means for establishing a complex R-bit decision comprising, by decreasing weight, the one-bit decision of the calculation cell and the R-1 most significant bits of the complex decision established by the cell associated with the selected state 2S or 2S+1.

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 digital telecommunications switching system includes a main normal rate switch having multiple, bi-directional ports for selectively switching timeslot associated with normal rate channels multiplexed on incoming and outgoing digital links. Each timeslot in the frame includes a predetermined number of bits. The normal rate switch switches timeslots received from any one of the switch ports to any one of the other switch ports at the normal rate. An "add-on" subrate switch is modularly connected to the normal rate switch and selectively switches one or more bits corresponding to one or more subrate channels within a timeslot at a data transmission rate which is less than the normal rate.

Abstract: A system, method and article of manufacture, for improving object security in distributed object systems, in an information handling system employing object oriented technology, includes one or more processors, a storage system, a system bus, a display sub-system controlling a display device, a cursor control device, an I/O controller for controlling I/O devices, all connected by system bus an operating system such as the OS/2* operating system program (OS/2 is a registered trademark of International Business Machines Corporation), one or more application programs for executing user tasks and an object oriented control program, such as, DSOM Objects program, which is a commercially available product of International Business Machines Corporation, the object oriented control program including a system authorization policy (SAP) object, a system authorization oracle (SAO) object, and a system registration object (SRO). The SAP object encapsulates management of a resource authorization policy.

Abstract: An integrated multi-rate cross-connect system (10) includes a broadband subsystem (14) for processing optical and electrical telecommunication network signals. A wideband subsystem (16) processes wideband level electrical telecommunication signals from the network, from the broadband subsystem (14), and from a narrowband subsystem (18). The narrowband subsystem (18) processes narrowband level electrical telecommunication signals from the network and the wideband subsystem (16). An administration subsystem (12) provides centralized control and synchronization to the broadband subsystem (14), the wideband subsystem (16), and the narrowband subsystem (18). The wideband subsystem (16) is coupled to the broadband subsystem (14) and the narrowband subsystem (18) by internal transmission links (30) to allow for remote distribution of each subsystem. Each subsystem operates within its own timing island synchronized to a reference timing signal to facilitate component distribution.

Abstract: A network (10) includes a repeater (12) that can service data devices that operate using different communications protocols. The data devices (18, 20, 22) couple to the ports (34) of the repeater (12), and operate using a first communications protocol in a first domain (14). The data devices (26, 28, 30) also couple to the ports (34) of the repeater (12) and operate using a second communications protocol in a second domain (16). Information on the operation of a port (34) may be displayed using one port indicator (202) or two port indicators (300, 302).

Abstract: A switched telecommunications network includes different types of traffic, such as audio data, including voice data, fax and modem originated data, digital computer originated data and video data. A communications link connects a user's site to the network, and a bandwidth manager is provided to multiplex traffic of different types for transmission over the link. After transmission over the link, a complementary bandwidth manager is arranged to de-multiplex the traffic for application to the respective switch. The bandwidth manager is arranged to dynamically allocate bandwidth to the different types of traffic, thereby optimizing the available bandwidth provided by the communications link.

Abstract: A time-division multiplex communication system includes a link highway having a common data link channel and an address identification channel, a concentrator, and a distributor. The concentrator monitors signals from individual links connected to respective individual link terminators, connects one of the individual links from which an input signal is received to a common data link channel, and transmits address information of the individual link through an address identification channel. The concentrator processes input signals from the respective individual links and sends them to the common data link channel in a manner to multiplex them at variable data rates as viewed from the individual links. The distributor receives signals from the common data link channel, and successively transmits the signals to respective individual links according to address information from the address identification channel for thereby transmitting data represented by the signals.