1
Raymond O Colbert: Secure credit/debit card authorization. AT&T, Werner Ulrich, Mony R Ghose, January 16, 1996: US05485510 (445 worldwide citation)

This invention relates to methods for making a credit/debit card purchase without revealing the card number to the vendor of services or goods. The card holder is connected to a data base and provides the card number, plus holder identity verification, to the data base. The data base then verifies w ...


2
William P Lidinsky, Gary A Roediger, Scott B Steele, Ronald C Weddige: User to network interface protocol for packet communications networks. American Telephone and Telegraph Company, Werner Ulrich, May 1, 1990: US04922486 (294 worldwide citation)

A high capacity metropolitan area network (MAN) is described. Data traffic from users is connected to data concentrators at the edge of the network, and is transmitted over fiber optic data links to a hub where the data is switched. The hub includes a plurality of data switching modules, each having ...


3
Thomas L Hiller, James J Phelan, Meyer J Zola: Apparatus for interfacing between telecommunications call signals and broadband signals. AT&T Bell Laboratories, Werner Ulrich, July 5, 1994: US05327421 (286 worldwide citation)

In accordance with the principles of this invention, Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample of up to 48 different voice connections, the ...


4
John M Scanlon: Telecommunications access to lottery systems. American Telephone and Telegraph Company, Werner Ulrich, May 1, 1990: US04922522 (278 worldwide citation)

A method and apparatus for operating a lottery system. Customers purchase lottery entries using their customer stations to send lottery entry data to a toll switching system equipped to prompt customers and accept lottery entries. Customer identification data for identifying purchasers is transmitte ...


5
Thomas L Hiller, James J Phelan, Meyer J Zola: Establishing telecommunications call paths in broadband communication networks. AT&T Bell Laboratories, Werner Ulrich, September 6, 1994: US05345446 (260 worldwide citation)

In accordance with the principles of this invention, Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample of up to 48 different voice connections, the ...


6
Thomas L Hiller, James J Phelan, Meyer J Zola: Establishing telecommunications calls in a broadband network. AT&T Bell Laboratories, Werner Ulrich, September 6, 1994: US05345445 (241 worldwide citation)

In accordance with the principles of this invention, Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample of up to 48 different voice connections, the ...


7
Roger A Elliott, Wayne V Lindquist: Reliable local data network arrangement. AT&T Bell Laboratories, Werner Ulrich, Peter Visserman, September 8, 1987: US04692918 (235 worldwide citation)

The reliability of a distributed processing system is enhanced through the use of a highly reliable data communication system. Each node of such a system is connected to the other nodes by a local data network, including duplicated data network media, such as coaxial cables. Each node includes a mai ...


8
Robert F Cuschleg Jr, Brian D Freeman, Kevin B Kelly, Philip J Patti, Anthony J Perinelli, Amy K Shannon: Multilocation queuing for telephone calls. AT&T Bell Laboratories, Werner Ulrich, August 28, 1990: US04953204 (229 worldwide citation)

This invention relates to methods and apparatus for queuing calls to a multilocation service provider having a plurality of automatic call distributors (ACDs). If all circuits to the ACDs are unavailable, a call is queued in one of a plurality of queues. One or more of these queues will allow call c ...


9
Wayne A Davidson, Diana S Winter: Automated call handling apparatus. AT&T Bell Laboratories, Peter Visserman, Werner Ulrich, June 11, 1991: US05023868 (227 worldwide citation)

A computer connected to an ISDN switch via an ISDN digital subscriber line, has shared cell appearances with a number of telephone stations connected to the switch and on the basis of shared call appearance associated messages from the switch, controls the forwarding of calls directed to the station ...


10
Thomas L Hiller, Ronald A Spanke, John J Stanaway Jr, Alex L Wierzbicki, Meyer J Zola: Intra-switch communications in narrow band ATM networks. AT&T, Werner Ulrich, June 27, 1995: US05428607 (214 worldwide citation)

Pulse Code Modulation (PCM) signal streams are converted into Asynchronous Transfer Mode (ATM) cells for switching and transmission across a telecommunications network. Each cell carries one PCM sample of up to 48 different voice connections, the voice connections being selected from the PCM data st ...