Carroll W Creswell, Francine S Frome, Daniel Furman, Philip S Kravitz, Ramnath A Lakshmi Ratan, Steven G Lanning, Bernard S L Renger, John A Rotondo: System for providing personalized telephone calling features. AT&T Bell Laboratories, F B Luludis, June 22, 1993: US05222125 (207 worldwide citation)

A common adjunct switch integrated with a telecommunications network and associated with a plurality of predetermined telephone numbers prefixed by a common code is provided with a facility which allows telephone subscribers that are assigned respective ones of the telephone numbers to personalize t ...

Richard A Becker, Stephen G Eick, Eileen O Miller, Allan R Wilks: Dynamic graphical analysis of network data. AT&T Bell Laboratories, F B Luludis, August 4, 1992: US05136690 (130 worldwide citation)

A computer is provided with the facility to display in map form, directed data associated with respective nodes. The operation of the mapping facility is initiated in response to the user entering an appropriate command. Specifically, responsive to the command, the computer displays a plurality of s ...

Guy G Riddle: Communications network dynamic addressing arrangement. AT&T Bell Laboratories, F B Luludis, November 24, 1992: US05166931 (130 worldwide citation)

A facility is provided which obviates the need of administering network addresses in an internetwork composed of a plurality of networks by assigning to each network a common source address, rather than a unique network address. In addition, and when a connection is established between two of the ne ...

Gary C Hess: Data router backup feature. Lucent Technologies, F B Luludis, November 10, 1998: US05835696 (127 worldwide citation)

A back-up facility for data routers is enhanced by providing a mutual back-up feature which allows each of the routers to be active at the same time while also providing a standby monitoring function for the other router(s).

Gerard Joseph Foschini, Glenn David Golden: Wireless communications system having a space-time architecture employing multi-element antennas at both the transmitter and receiver. Lucent Technologies, F B Luludis, Reitseng Lin, November 13, 2001: US06317466 (121 worldwide citation)

The bit rate at which a digital wireless communications system communicates data in scattering environments may be significantly increased by using multiple antennas at both the transmitter and receiver and by decomposing the channel into m subchannels. In the same frequency band, m one dimensional ...

Bruce D Wycherley, Daniel J Yaniro Jr: Automated dual-party-relay telephone system. AT&T Bell Laboratories, F B Luludis, November 10, 1992: US05163081 (100 worldwide citation)

A facility is provided for automating dual party relay service so that the cost of such a service may be reduced. The desired result is achieved by automating particular features of dual party relay service to appreciably decrease the amount of time that a service attendant is involved in a dual par ...

Gerald R Ash, Steven D Schwartz: Fully shared communications network. AT&T Bell Laboratories, F B Luludis, July 14, 1992: US05130982 (91 worldwide citation)

The architecture of a communication network comprising a plurality of nodes interconnected by a transmission facility having a bandwidth divisible into channels of respective bandwidths, e.g., optical fiber, is enhanced by fully sharing the network bandwidth among the network nodes, such that each p ...

Bruce E Caram, Ronald C Roposh, Harvey Rubin: Communications network arranged to transport connection oriented and connectionless messages. AT&T Bell Laboratories, F B Luludis, November 10, 1992: US05163045 (65 worldwide citation)

A communications system that is arranged to transport so-called connection oriented messages via respective virtual circuit connections is enhanced so that it also transports so-called connectionless messages via a predefined virtual circuit connection that is common among those data modules which p ...

Yuval V Lirov, On C Yue: Technique for producing an expert system for system fault diagnosis. AT&T Bell Laboratories, F B Luludis, April 21, 1992: US05107497 (65 worldwide citation)

The present invention relates to a technique for operation on a computer for developing the knowledge base for ultimately providing very fast and cost-efficient fault diagnosis systems. The present technique uses an effective hierarchy of rules where at a first level are rules which allow the arrang ...

Bharat T Doshi, Subrahmanyam Dravida, Christopher Flores, Pravin K Johri: Data services retransmission procedure. AT&T Bell Laboratories, F B Luludis, June 22, 1993: US05222061 (64 worldwide citation)

A facility is provided for use in a packet switch to control unnecessary multiple retransmissions of a data packet. In an exemplary embodiment of the invention, such control is achieved by tracking in a list the sequence numbers of transmitted data packets and retransmitting a data packet only if it ...