Lucent Technologies Inc.

At+t Corp.

At&t Bell Laboratories

Srinivasan Keshav

Alexander Gibson Fraser

David Tse

Matthias Grossglauser

Kenneth Lee Clarkson

Charles R Kalmanek

Rosen Sharma

A M Odlyzko

Disclosed are methods and systems for authenticating a unique article utilizing a generated unique data signature. The unique data signature is generated by encrypting a received data set representative of a unique identification number fixed to a substantially unforgeable document. The unique data signature is fixed to the unique article or to an optionally generated ownership certificate or the like. The unforgeable document is retained, possibly as the ownership certificate, or the like, or as a part thereof, to thereby authenticate the unique article.

Methods and systems for performing article authentication

A method and system adaptively substitutes a single dialing button sequence for a selected action in a voice menu of a telephone system. A shortcut message in the voice menu prompts a caller to select a shortcut button to achieve a shortcut action. The system then accumulates counts related to frequencies of occurrence of a plurality of actions prompted by the voice menu. The system then ranks the plurality of actions by their respective accumulated counts and determines if any one of the plurality of actions has an accumulated count greater than an accumulated count of the shortcut action. If it does, then the system causes the substitution the one of the plurality of actions and a corresponding message for the shortcut action and the shortcut message in the voice menu.

Voice menu optimization method and system

A method and apparatus for transferring encrypted information to a database. First certification information is transferred from a first database to a second database. Second certification information is then transferred from the second database to the first database, where both the first certification information and the second certification information is authenticated. If both certifications are authenticated, the transfer of the encrypted information to the second database is enabled.

Method and apparatus for crytographically protecting data

A method and an apparatus that improves a data transmission rate in a TCP connection having an asymmetrical path. An intermediate node transmits a predetermined number k of data packets to a destination node, and measures a time period A between transmitting the k data packets and receiving a receipt acknowledgment signal at the intermediate node indicating receipt of the k data packets at the destination node. The intermediate node then transmits to a source node k acknowledgement signals with a time interval of A/k between each acknowledgement signal.

Method and apparatus for collapsing TCP ACKs on asymmetrical connections

A method and system for handling incoming calls when no destination stations are available. When an incoming call from an originating station is received, it is determined whether a destination station is available. If a destination station is not available, a telephone number of the originating station is stored, Shortly before its current call is concluded, a destination station indicates its approaching availability. Responsive to this indication, an outgoing call is placed to the originating station. If the originating station does not answer the outgoing call within a predetermined time, the outgoing call is terminated and rescheduled. If the originating station answers the call within a predetermined time, the outgoing call is connected to the available destination station.

800 number callback

Disclosed are methods and systems for achieving and maintaining data transmission rates in processing system networks, independent of communication between the node and the processing system network, and including techniques for data transmission initialization, data retransmission, and buffer management. Data transmission initialization includes transmitting data packets from a source node over a network at an adaptive exponential transmission rate from a current operating point to an optimal operating point. The optimal operating point is a data transmission rate wherein data buffers are neither overflowing nor under-flowing. Data retransmission includes transmitting data packets at the optimal set point, detecting the loss of a transmitted data packet as a function of a timer-less acknowledgement signal, and retransmitting the lost data packet. Buffer management includes redetermining the optimal operating point in response to unexpected changes in the data transmission bandwidth of the network, wherein detection of such changes is preferably accomplished using a dynamic set point probing procedure.

Methods and apparatus for achieving and maintaining optimum transmission

The methods and systems of the invention enable connectionless-oriented server and client programs operating on processing systems to communicate with connection-oriented routines operating on different processing systems linked to connectionless or connection-oriented networks by establishing connections or communications virtual circuits between such programs. The connectionless-oriented server and client programs may be modified to communicate with a connection manager to establish a virtual circuit before initiating communications with the connection-oriented routines. The invention further utilizes encapsulators and decapsulators to enable communication programs to transfer data packets in a first format on an established virtual circuit over a network transmitting data in a second format.

Methods and systems for interprocess communication and inter-network

A data transmission system and method employing either a renegotiated variable bit-rate ('RVBR') network or a renegotiated constant bit-rate ('RCBR') network. Within these networks, data transmission rates between a sender and a recipient are rapidly renegotiated as a function of previously stored data transmission rate information and system buffer levels. Such a system and method can be readily implemented within existing CBR and/or VBR network architectures. The RCBR and RVBR networks allow for the implementation of an intelligent data traffic management systems that are responsive to the rate at which new calls or requests for connections enter and leave the network, the frequency and duration of extended peak rate data bursts, as well as the occurrence of short duration data transmission peaks.

Renegotiated bit-rate service system and method

A system and method for the segmentation of data exhibiting an intrinsic long-term average data rate, punctuated with periods of peak rate data bursts. This segmentation conditions the data for efficient transmission via either a renegotiated constant bit-rate ('RCBR') network or a renegotiated variable bit-rate network ('RVBR') network. Within these networks, data transmission rates between a sender and a recipient are rapidly renegotiated as a function of previously stored data transmission demand information and system buffer levels. Such a system is responsive to the rate at which new calls or requests for connections enter and leave the network, the frequency and duration of extended peak rate data bursts, as well as the occurrence of short duration data transmission peaks.

Data segmentation within a renegotiated bit-rate service transmission

Apparatus and methods for time multiplexing a resource among a plurality of entities at average rates and with deterministic delays between accesses to the resource by an entity. An entity accessing the resource receives a time slot on the resource; a fixed number of time slots constitute a frame. Each entity receives a fixed allocation of time slots in the frame. When an entity has work for the resource to do, it receives access to the resource for a number of slots in each frame equal to the lesser of the number of slots required to do the work and the number of slots in the allocation. A rate-controlled server is disclosed which defines a frame and allocations therein, as well as a hierarchy of servers which combines rate-controlled traffic with best effort traffic. In the hierarchy, a rate-controlled server activates a round-robin server when the entities served by the rate-controlled server do not require all the slots in a frame. A hierarchy of rate-controlled servers is further disclosed which permits access to the resource at widely-differing average rates. In that hierarchy, a number of slots in the frame for a given member of the hierarchy are reserved for the next member down of the hierarchy and the next member down is active only during those slots. Further disclosed are nodes of ISDN networks employing ATM which incorporate the servers and hierarchies thereof.

Growing community of inventors

Berkeley Heights, NJ, United States of America

Srinivasan Keshav