Abstract: A system for analyzing an interactive voice response (IVR) system of a call processing center determines a complete sequence of events occurring within the IVR system. The IVR system being operable to automatically accept calls from callers and respond to input from the callers. The system models a call flow of the IVR system as a non-deterministic finite-state automaton. A recording of a plurality of calls to the call processing center is split, such that each of plural calls to the call center is in one audio file. For a plurality of calls, the system detects a complete sequence of DTMF and/or speech input to the IVR system, detects selected prompts issued by the IVR system, and inputs the detected sequence of DTMF and/or speech input as well as the detected prompts issued by the IVR system into the finite-state automaton to determine a call-event sequence for that call. The call-event sequence includes information regarding how that call left the IVR system.

Abstract: Systems and methods for encoding packetized data include applying different codings to the header and the payload. The header of a data packet is encoded for error correction separately from the payload of the data packet. The use of separate error correction techniques for the header and payload of a packet permits optimization of each for use in a data network, and more particularly, in a wireless data network.

Abstract: There is provided a method for determining a topology for a network. The method comprises the steps of obtaining data that describes a requirement for a service between a first node and a second node, and searching a state space to define a solution that fulfills the requirement. The solution provides a topographic arrangement for the first node and the second node in the network. There is also provided a system for determining a topology of a network.

Abstract: A system monitors performance in a network (130) having several routers (210). The system determines a roundtrip path in the network (130) between a source and a destination, identifies routers (210) located on the path, collects performance data from the identified routers (210), and compares the performance data to at least one performance criteria to determine compliance with a service-level guarantee.

Abstract: Offering vertical services to subscribers and service providers is an avenue to immediately improve the competitiveness of digital subscriber line access service, for example of the type offered by a local exchange carrier. To deliver high-quality vertical services, however, the underlying ADSL Data Network (ADN) or the like needs to establish Quality of Service (QoS) as a core characteristic and offer an efficient mechanism for insertion of the vertical services. The inventive network architecture introduces QoS into the ADN, in a manner that enables the delivery of sophisticated and demanding IP-based services to subscribers, does not affect existing Internet tiers of service, and is cost-effective in terms of initial costs, build-out, and ongoing operations.

Abstract: Establishing a conference between a customer at a customer terminal and a live agent at an agent station, by (a) accepting a call request from the customer terminal, (b) requesting that an available live agent take the call request, (c) when a live agent becomes available to take the call request, passing customer information to the agent station associated with the available live agent, and (d) establishing a conference from the agent station associated with the available live agent to the customer terminal. The conference may be an audio-video conference. The audio-video conference may be compliant with the H.323 standard. The call request may generated in response to an event sensed by an API which was previously downloaded to the customer terminal from a web server. The call request may be generated in response to a trigger event.

Abstract: A method is provided for estimating a number of digital subscriber line nodes (220, 230) required to supply, from a line supply source (200), a geographically distributed network of substantially sequentially numbered twisted pair lines with digital subscriber line service. The method comprises the steps of: storing, in number order, data entries for every twisted pair line of the network, each data entry comprising a pair number and a line length of the respective twisted pair line in relation to the line supply source (200); sorting the entries stored in the database by line length; isolating those sorted entries whose twisted pair lines have a line length greater than a predetermined maximum line length in relation to the line supply source (200); sorting the isolated entries by number; and discriminating, from the sorted isolated entries, the presence of discrete groupings of substantially contiguous entries.

Abstract: A system monitors performance in a network that includes several network resources. The system obtains a list of targets in the network. The targets include selected ones of the resources. The system sends a request to the targets, receives responses from the targets, and determines a status of the targets based on the received responses or a lack of responses from the targets. The system then analyzes the status of the targets to determine compliance with the service-level guarantee.

Abstract: A communication system has stations arranged in clusters of member stations, each of which communicates with the other member stations. One member station is a head station of the cluster that communicates with head stations of other clusters. The stations are configured by determining the communication state between a station and one or more cluster head stations. The station is assigned to at least one cluster when a prescribed communication state has been determined between the station and the cluster head station. The station is set to be in independent communication with the one or more cluster head stations which have the prescribed communication state with the station.

Abstract: There is disclosed multiple embodiments of a predictive active compensation system for dampening vibration in an optimum manner employing feedback control wherein stiffness of dampening material is adjusted on a continuous and dynamic basis to ensure that relative displacement between vibrating machine or object and its foundation does not exceed particular limits including limits preventing impact between object and foundation. In these disclosed systems and methodologies of the present invention the foundation may also be subjected to movement. Further disclosed are computer plots of mathematical models on which embodiments of the present invention are based, thereby demonstrating efficacy of the present invention.

Abstract: A disk array subsystem for use in a data processing system. In one embodiment, the disk array subsystem comprises a generally rectangular chassis having a top wall, a bottom wall, a pair of side walls, an open front end and an open rear end. Disposed within the chassis are three power supplies, a pair of controller boards, a backplane, and a set of twenty disk drive modules. A mounting structure comprising four first disk drive module guide plates and a pair of second disk drive module guides is fixedly mounted within the chassis for removably mounting the disk drive modules in the chassis through the open front end and for placing the disk drive modules in approximate alignment with the backplane for electrical connection therewith. Each first guide plate is shaped to include five parallel slotted channels, and each second disk drive module guide plate is shaped to include ten parallel grooves.

Abstract: A data processing system is disclosed in which a plurality of high performance, intelligent, mass storage input-output devices are linked to a host controller by an input-output interface bus which is divided into three sections. Each section is completely independent of the other two sections and used for a different and specific purpose. One section is used to transfer commands and retrieve status information. A second section is used to handle device requests for data transfer and device signals for operation complete. The third section is used to transfer data to and from a device. Since the three sections are completely independent, simultaneous transfer of command control and data to different input-output devices or to a single input-output device can be performed.

Abstract: Methods are set forth which provide for the allocation of bandwidth for point-to-point, serial, bidirectional communication paths in a digital switching system. Bandwidth allocation is performed at both ends of a path (e.g. T1 line, IML, etc.) and may take place in either direction. Furthermore, according to the preferred embodiment of the invention, the Bandwidth Allocation Facility (BAF) at each end of a given path allocates bandwidth in integer multiples of maximum switching system granularity. The BAF also supports the implementation of user requests for any one of a plurality of allocation and boundary rules. To minimize the probability of contention and out of band signalling between the BAF pair associated with a given path, a front-to-back search mechanism is assigned for one BAF of the pair, while the other BAF utilizes a back-to-front search mechanism.

Abstract: Methods and apparatus are set forth for quickly making switched virtual connections (SVCs) in a digital circuit switch that integrates voice and data using common switch, control and distribution equipment. SVCs provide concurrent data connection service from one station device, such as a PC, to other station devices over a single line for each station device where the line may also carry voice and terminal data service. A switch control processor remembers connection requests from station devices and acts on opportunities to utilize available bandwidth in an optimal manner. Dynamic connection reconfiguration techniques allow the system to "scavenge" bandwidth unused by voice or terminal data traffic for SVCs thereby providing the largest possible data rate at any given time. Short signalling messages and indexed values are used in order to speed activation time for previously defined connections while resource allocation is performed by the switch control processor to further enhance system operating speed.

Abstract: An integrated office controller (IOC) network includes, in combination, a plurality of station devices each capable of transmitting and receiving multiplexed bearer and signal channel information; user port interface means for carrying said multiplexed information between a station device and a station multiplex/demultiplex device (SMX); a plurality of SMXs, each associated with and coupled to a predefined cluster of said station devices, via said user port interface means, for concentrating the multiplexed information froms said interface means into channel signals, central equipment module (CEM) means, including a call processor, a non-blocking switch matrix and clock means, for switching channel signals through said switch matrix under the control of said cell processor and clock means; transmission system means, capable of interfacing SMXs and trunk cards to said CEM, where said transmission system means includes modular line interface module (LIM) means for interfacing a plurality of SMXs and the CEM, an

Abstract: A data processing system having a local memory bus, a main memory coupled to the local memory bus and a host central processing unit coupled to the local memory bus includes a single input/output controller for interfacing a plurality of input/output devices to the local memory bus. The input/output controller includes a plurality of input/output device controllers, each input/output device controller being adapted to be connected to at least one input/output device, a single microprocessor for managing the overall operations of the input/output controller, a single buffer memory for storing a program of instructions for the microprocessor and temporarily storing data received from the input/output devices and a gate array for interfacing all of the input/output device controllers to the local memory bus.

Abstract: Methods and apparatus are set forth which improved the sub-rate channel carrying capacity and the efficiency of bandwidth usage, over the CCITT I.463 standard, for switching systems having a switching "granularity", defined as the smallest channel size that can be switched through the system, of better then 64 Kbps (e.g. a switching system that can switch 8 Kbps fragments). These methods and apparatus are capable of performing rate adaptation for multiple synchronized subrate channels in accordance with a predefined multiplexing protocol. The protocol calls for "time interleaved" multiplexed rate adaptation to be performed, i.e., multiple sub-rate channel data is packaged into fragment size envelopes (or integer multiples thereof). The width of a fragment is also matched (ideally equal) to the granularity of the system's switch.

Abstract: Methods and apparatus are set forth that perform Format Conversion between bit streams which embed sub-rate circuit data according to different protocols. The invention (1) locates and extracts the sub-rate circuit data embedded, in an input serial bit stream, in accordance with a first predefined protocol (2) aligns the data in a buffer, and (3) creates an output bit stream in which the extracted circuit data is reformatted and inserted in accordance with a second predefined protocol. A programmable bit map driven format conversion module operates the data aligned in the aforementioned buffer. The conversion process is bidirectional and, in one embodiment of the invention, facilitates conversion between a single stage time division multiplexed data format and a two stage time division multiplexed format (e.g. X.50 and I.463) by utilizing the aforesaid bit map driven format conversion technique.

Abstract: Methods and apparatus are set forth which provide for the allocation of bandwidth for point-to-point, serial, bidirectional communication paths in a digital switching system. Bandwidth allocation is performed at both ends of a path (e.g. T1 line, IML, etc.) and may take place in either direction. Furthermore, according to the preferred embodiment of the invention, the Bandwidth Allocation Facility (BAF) at each end of a given path allocates bandwidth in integer multiples of maximum switching system granularity. The BAF also supports the implementation of user requests for any one of a plurality of allocation and boundry rules. To minimize the probability of contention and out of band signalling between the BAF pair associated with a given path, a front-to-back search mechanism is assigned for one BAF of the pair, while the other BAF utilizes a back-to-front search mechanism.

Abstract: Methods and apparatus are set forth which improve the efficiency of bandwidth usage over the CCITT I.463 standard, for switching systems having a granularity of better then 64 Kbps (e.g. 8 Kbps). Furthermore, methods and apparatus are set forth which are capable of performing rate adaptation for synchronized sub-rate channels in a manner geared to package sub-rate data in fragment size envelopes (or integer multiples thereof), where the width of a fragment is matched (ideally equal) to the granularity of the system's switch. This improves the efficiency of the rate adaptation process and maximizes the use of the system's switching and bandwidth capacity.