Abstract: Two intelligent nodes are provided with the capability of negotiating a protocol between them so that if the intelligent nodes operate at two different protocols then they can select a protocol appropriate for their communication. Furthermore, the intelligent nodes are provided with a locking shift capability so as to select between codesets that are available within a selected protocol.

Abstract: A method and system for client identification include a control unit configured to enable call service features in communication devices supported by the control unit. A first communication device transmits an off-hook message to the call control unit with a first memory-space physical address locally accessed from memory associated with the first communication device. The first physical address represents a location in main memory of call service profile data associated with the first communication device. The control unit responds to the first physical address by accessing a first data set from the main memory. A verification program determines whether the first data set includes the first call service profile. The control unit enables a first set of call services indicated by the first call service profile data for the first communication device if the first call service profile is included in the first data set.

Abstract: A method for providing a lossless, compressed topology aggregation of a group of switching nodes and interconnecting links. The switching nodes are divided into border vertices having communications with other networks or subnetworks and interior vertices. The method determines non-redundant optimal paths between different pairs of border vertices. These paths are aggregated for storage at individual border switching nodes to enable the characteristic, metric or attribute to be advertised outside of the subnetwork or peer group.

Abstract: The invention provides a method and system for selecting routes in a switching network with resource reservation, such as an ATM network. A set of routes are periodically precomputed, so that routes are known between any sending node and any receiving node, subject to resource reservation requirements. Each incoming call has its resource requirements, such as call size, compared with a selected threshold, and if the requirements exceed the threshold, a route is dynamically recomputed for the call. Other aspects of routing may be responsive to the calls' resource requirements. For example, a ratio of required resources with quality-of-service restrictions to required resources without such restrictions may be used to determine whether to reject the call, responsive to the call's resource requirements. The call size may be compared against another selected threshold, and the decision to determine whether to use that ratio to reject the call may be made responsive to comparisons against one or both thresholds.

Abstract: A packet output device for formatting serial data into packets and for transmitting resulting data packets includes a data packet generator for generating each data packet and for generating time data corresponding to the data packet, the time data defining an output time of the data packet, and a packet transmitting circuit for receiving the data packet and the corresponding time data and transmitting the data packet based on the corresponding time data.

Abstract: A synchronized frequency generating system is provided which includes a main crystal clock, for producing a basic frequency F.sub.B, a channel sampling phase locked loop (PLL) unit, connected to the main crystal clock, for converting the basic frequency F.sub.B into a channel sampling frequency F.sub.CS, a voice sampling PLL unit, connected to the main crystal clock, for converting the basic frequency F.sub.B into a voice sampling frequency F.sub.VS, a time tracking unit, connected to the channel sampling PLL unit, for detecting signal characteristics so as to determine a channel sampling frequency phase change value .DELTA..phi..sub.CS and a frame timing phase change value .DELTA..phi..sub.FRAME, and a frequency controller, connected to the voice sampling PLL. The frequency controller receives channel sampling frequency phase adjustment data and determines a voice sampling frequency phase change value .DELTA..phi..sub.VS. The frequency controller provides the voice sampling frequency phase change value .

Abstract: Systems and methods for providing mitigation of interference in a CDMA cellular network caused by excessive in band energy are disclosed. In the preferred embodiment, multiple narrow antenna beams are used to isolate the excessive energy from that of signals from mobile units. Control circuitry measures the power level on each of these multiple beams, compares this measurement to an estimated number of mobiles operating in the associated antenna beam, and determines if excessive energy is present in the beam. If excessive energy is determined to exist, the present invention causes the gain of particular antenna beams to be adjusted so as to mitigate the effect of the excessive energy.

Abstract: A system, method and computer program product for preventing unnecessary retransmissions from being sent from a terminal such as, for example, an internet host computer, on a slow link. A slow link TCP optimizer receives data packets from a host computer and determines, based on an estimated round trip time, whether a data packet is a new data packet, a valid retransmitted data packet or an unnecessary retransmitted data packet. New data packets and valid retransmitted data packets are forwarded over the slow link to a remote terminal. Unnecessary retransmitted data packets are discarded. The estimating a round trip time is determined as the time it takes for a data packet to travel from the present invention to the remote terminal and for an acknowledgment of receipt to travel from the remote terminal back to the present invention. The estimated round trip time includes throughput latency that results from a slow link.

Abstract: The invention generally provides for a network element and methods in the network element for allowing a matching entry in a forwarding memory to be found in a single search of the memory, for determining when an entry should be placed in the memory, and for determining when an entry should be removed from the memory, in order to make more efficient use of the fixed space available in the memory. The invention is particularly useful in making more efficient use of a Content Addressable Memory (CAM) for storing flow entries, and configuring the CAM to index an associated memory that stores forwarding and quality of service information for each CAM entry.

Abstract: A telecommunications terminal is provided that is compatible with, and capable of connecting to, a cellular switch. Also provided are a protocol engine programmed to convert signals used in the terminal to a protocol required by the cellular switch and a service element programmed to generate wireline services for wireline subscribers.

Abstract: A method of establishing wireless communications between an interrogator and individual ones of multiple wireless identification devices, the method comprising utilizing a tree search method to establish communications without collision between the interrogator and individual ones of the multiple wireless identification devices, a search tree being defined for the tree search method, the tree having multiple levels respectively representing subgroups of the multiple wireless identification devices, the method further comprising starting the tree search at a selectable level of the search tree.

Abstract: The present invention discloses a method for adjusting an Inter-Frame Gap (IFG) in a desired ratio. Based on the method, the lengths of the first part and the second part of an Inter-Frame Gap are adjusted in such a way that their increased amount or decreased amount are always approximately in a specified ratio. Better configuration of an IFG can thus be maintained all the time, and larger adjustable range of an IFG can thus be achieved.

Abstract: A system determines that a frame relay connection exists between an interface on a first interface device and an interface on a second interface device, for example by comparing addresses resident in routing tables of the interface devices. The system then queries each of the first and second interface devices, to determine the amount of traffic that is communicated by each channel of each of the two interfaces. This data is then correlated to determine the relative amount of data by each channel on each of the two interfaces, and the pair of channels having the best correlation are determined to represent an actual connection.

Abstract: A path defining/changing/deleting section sets in advance the definition of the setup of a PVC connection in a PVC connection object management table as a PVC connection object. Each PVC connection object has an attribute indicating an active or inactive state. When a request is made by a reservation controlling section for activating or deactivating an object PVC connection, a PVC active/inactive state controlling section can immediately read from the PVC connection object management table a PVC connection object indicating the definition of the setup of the object PVC connection, to send commands based on the definition to each of network elements (NE) which comprise an information communications network.

Abstract: A communication control system capable of lessening burden (load) of the repeater and reducing the number of development steps of the system. Data of the ATM standard delivered to an ATM/1394 repeater 3 through an ATM network 2 from an ATM terminal 1 is converted into data of the IEEE 1394 standard by an ASEL 31. The data thus obtained is transmitted to a 1394 terminal 4. The data of the IEEE 1394 standard transmitted to the 1394 terminal 4 is converted into data of the ATM standard by an ASEL 32.

Abstract: The object of the present invention is to provide a simple wireless repeating method and a repeater suitable for application to Time Division Multiple Access-Time Division Duplex communication methods. Transmission data transmitted from a base station and a mobile station at different time slots of a frequency for call channel use is received at a call channel receiver, analyzed every time slot at a frame analyzer and stored at a storage part. The data stored at the storage part is then read by a frame configuration unit on the timing of time slots Tb1 and Tb2 allotted to the base station and the mobile station prior to transmission and transmitted from a transmitter at the frequency for call channel use. The mobile station can therefore make calls with the base station with the same procedure regardless of whether or not a repeater is present or absent.

Abstract: A large flat IP network is created in a switched layer-2 network by adjusting the subnet masks of hosts such that these hosts can communicate directly with other hosts without the use of an intermediate router. The layer-2 switches are configured with user-selected IP subnets and monitor and analyze multicast packets to learn the mapping between IP subnets and switch ports. The layer-2 switches selectively forward the mulitcast packets based on the learned mappings between IP subnets and ports. After the destination host responds to the forwarded multicast, a direct connection is established between the source and destination hosts using the media access control addresses of both hosts.

Abstract: A method for pacing data flows in packet switched networks by arranging data transmission over a period of time based upon a set of ascertainable factors about the underlying transmission link to derive an intersegment transmission interval. The intersegment transmission interval can be used to pace either data packets or acknowledgment packets. The method is especially useful for pacing the transmission of data in a digital data packet communication environment having a plurality of digital packet transmission stations inter-connectable in a data path and employing the Transmission Control Protocol (TCP) suite.

Abstract: The establishment of digital connections is avoided if the power level compensated uplink signal strength transmitted by a dual-mode mobile station is below a threshold value. In such cases, a dual-mode mobile station is instead preferably connected to an analog traffic channel. The threshold value can be selected to provide a statistically acceptable probability that the digital connection will be successful. Different threshold values can be used for different connection situations to take into account the different techniques used to determine a best serving base station.

Abstract: The present invention is directed to a hybrid packet/cell switching, linking, and control system and methodology for sharing a common internal cell format that supports multiple protocol operations to support both high speed Ethernet and ATM. The architecture is a shared memory common internal cell architecture (ATM is the preferred embodiment), providing capabilities that support multicast data traffic (which is specific in a LAN environment) and accommodates a large shared buffer and linked list queue set groupings to control reading and retrieving the cell and packet encapsulated cell data types to permit intercoupling all combinations of cross/hybrid switching. The new hybrid switch provides both a full non-blocking packet (e.g., Ethernet) switch having a plurality of ports (e.g., 32 @ 100 Mbps (full or half duplex) ports) and a full non-blocking cell (e.g., ATM) switch having a plurality of ports (e.g., 32 @ 155 Mbps ports).