1
Thomas S Afferton, Sid Chaudhuri, Peter M Dollard, Simon S Zelingher: Fault detection and isolation in a synchronous optical network (SONET) and in a synchronous digital hierarchy (SDH) network. AT&T, September 17, 2002: US06452906 (16 worldwide citation)

An in-band fault detection and isolation system and method for networks such as Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) networks. Fault detection may be quickly and efficiently performed by a network without requiring modification to any add/drop multiplexers (ADMs) and ...


2
Sid Chaudhuri, Bruce Gilbert Cortez, Simon S Zelingher: Method and apparatus for capacity-efficient restoration in an optical communication system. AT&T, July 1, 2003: US06587235 (16 worldwide citation)

A method and system provide capacity-efficient restoration within an optical fiber communication system. The system includes a plurality of nodes each interconnected by optical fibers. Each optical fiber connection between nodes includes at least three channel groups with different priority levels f ...


3
John T Mulligan, David John Knight, Ronnie R Kulper, Don J Moloney, Mai Uyen Thi Nguyen, Han Q Nguyen, Diana Lynn Toll Verry, Simon S Zelingher: Methods and apparatus to provision cloud computing network elements. AT&T Intellectual Property I, Hartman & Citrin, April 15, 2014: US08699499 (15 worldwide citation)

Methods and apparatus to provision cloud computing network elements are disclosed. A disclosed example method includes receiving a selection of a cloud networking template from a client, wherein the cloud networking template includes a data center connector type and a wide area network connector typ ...


4
Sid Chaudhuri, Bruce Gilbert Cortez, Simon S Zelingher: Method and apparatus for capacity-efficient restoration in an optical communication system. AT&T, April 1, 2008: US07352966 (11 worldwide citation)

A method and system provide capacity-efficient restoration within an optical fiber communication system. The system includes a plurality of nodes each interconnected by optical fibers. Each optical fiber connection between nodes includes at least three channel groups with different priority levels f ...


5
Sid Chaudhuri, Simon S Zelingher: System and method for service independent data routing. AT&T, June 29, 2004: US06757243 (10 worldwide citation)

Data are rerouted over a network having a uniform-capacity Tandem Connection by detecting a failure in a link in a path, maintaining the path through a Tandem Connection that does not include the failed link, and rerouting the data through the Tandem Connection based on information embedded in a tan ...


6
Bruce Gilbert Cortez, Sanja Durinovic Johri, Pravin Kumar Johri, John Paggi, Simon S Zelingher: Scheme for randomized selection of equal cost links during restoration. AT&T, June 24, 2008: US07391732 (9 worldwide citation)

The present invention relates generally to restoration of services in a network. More particularly, the invention encompasses a scheme for randomized selection of equal cost links during restoration in a communication network. The invention further includes multiple schemes for restoring services. T ...


7
Thomas S Afferton, Martin Birk, Kenneth A Duell, Hossein Eslambolchi, Kathleen A Tse, Simon S Zelingher: Network with optical bandwidth on demand. August 4, 2009: US07570886 (6 worldwide citation)

A network arrangement where traffic elements of network nodes are programmable. A traffic element comprises electrically controllable transceiver pool having one or more ports that are coupled to an electrically controllable optical director that has all-optical information communication paths. The ...


8
Sid Chaudhuri, Bruce Gilbert Cortez, Simon S Zelingher: Method and apparatus for capacity-efficient restoration in an optical communication system. AT&T Intellectual Property II, December 7, 2010: US07848642 (5 worldwide citation)

A method and system provide capacity-efficient restoration within an optical fiber communication system. The system includes a plurality of nodes each interconnected by optical fibers. Each optical fiber connection between nodes includes at least three channel groups with different priority levels f ...


9
John T Mulligan, David John Knight, Ronnie R Kulper, Don J Moloney, Mai Uyen Thi Nguyen, Han Q Nguyen, Diana Lynn Toll Verry, Simon S Zelingher: Methods and apparatus to provision cloud computing network elements. AT&T Intellectual Property I, Hartman & Citrin, December 1, 2015: US09203775 (4 worldwide citation)

Methods and apparatus to provision cloud computing network elements are disclosed. A disclosed example method includes receiving a selection of a cloud networking template from a client, wherein the cloud networking template includes a data center connector type and a wide area network connector typ ...


10
Sid Chaudhuri, Simon S Zelingher: System and method for service independent data routing. AT&T, January 24, 2006: US06990065 (3 worldwide citation)

Data are rerouted over a network having a uniform-capacity Tandem Connection by detecting a failure in a link in a path, maintaining the path through a Tandem Connection that does not include the failed link, and rerouting the data through the Tandem Connection based on information embedded in a tan ...