Han T Nguyen

US Patent:

7035260, Apr 25, 2006

Filed:

Aug 27, 2001

Appl. No.:

09/939871

Inventors:

Carl E. Betta - Freehold NJ, US
Gerald L Hoover - Red Bank NJ, US
John Jutten Lawser - Holmdel NJ, US
James J. Mansell - Fair Haven NJ, US
Han Q. Nguyen - Marlboro NJ, US
Larry Arnise Russell - Atlantic Highlands NJ, US

Assignee:

AT&T Corp. - Bedminster NJ

International Classification:

H04L 12/28
H04L 12/56

US Classification:

370392, 370401

Abstract:

A network architecture () provides Voice over Internet Protocol (VoIP) service as well as multimedia and Internet web-based applications while implementing features common in a traditional telecommunications network. In response to an incoming call dialed to an IP endpoint (), the network will process the call, and in particular, convert the call, if in not already in a VoIP format, to such a format, while mapping signaling associated with the call into a compatible format. The VoIP call is then routed to the IP endpoint. In the event that the call requires an associated multimedia or Internet-web-based application, the network will initiate the application. Processing of the incoming call may require accessing of a common database to acquire a location routing number for the call destination. To afford dynamic addressing of the IP endpoints, each may be referenced by a corresponding Universal Resource Locator (URL) (or other indirect mapping) associated with the IP address of the endpoint.

US Patent:

7313605, Dec 25, 2007

Filed:

Jan 30, 2004

Appl. No.:

10/768518

Inventors:

Ali Murat Iloglu - Laurence Harbor NJ, US
Han Q. Nguyen - Marlboro NJ, US

Assignee:

AT&T Corp. - New York NY

International Classification:

G06F 15/16
G06F 15/173

US Classification:

709219, 709227, 709228, 709229, 709238, 709242, 709244, 709249

Abstract:

A network that supports VPNs is enhanced to allow users in one VPN to communicate with users in another VPN in the course of executing a predefined application, such as VoIP. This capability is achieved dynamically by enabling a device that can communicate with the network elements that operate to normally prohibit inter-VPN communication to direct those network elements to enable such communication, at least for the purposes the purposes of specific applications.

US Patent:

7467227, Dec 16, 2008

Filed:

Dec 30, 2003

Appl. No.:

10/748882

Inventors:

Han Q. Nguyen - Marlboro NJ, US
Tayfun Cataltepe - Fair Haven NJ, US
Samir S. Saad - Long Branch NJ, US

Assignee:

AT&T Corp. - New York NY

International Classification:

G06F 15/173

US Classification:

709239, 709238, 709242

Abstract:

The present invention discloses a method and architecture for enabling multiple services or service providers to share the facilities of an access network infrastructure that provides physical connectivity to subscribers.

US Patent:

8031712, Oct 4, 2011

Filed:

Mar 28, 2006

Appl. No.:

11/392435

Inventors:

Carl E. Betta - Freehold NJ, US
Gerald L Hoover - Red Bank NJ, US
John Jutten Lawser - Holmdel NJ, US
James J. Mansell - Fair Haven NJ, US
Han Q. Nguyen - Marlboro NJ, US
Larry Arnise Russell - Atlantic Highlands NJ, US

Assignee:

AT&T Intellectual Property II, L.P. - Atlanta GA

International Classification:

H04L 12/28
H04L 12/56

US Classification:

370392, 370401

Abstract:

A network architecture () provides Voice over Internet Protocol (VoIP) service as well as multimedia and Internet web-based applications while implementing features common in a traditional telecommunications network. In response to an incoming call dialed to an IP endpoint (), the network will process the call, and in particular, convert the call, if in not already in a VoIP format, to such a format, while mapping signaling associated with the call into a compatible format. The VoIP call is then routed to the IP endpoint. In the event that the call requires an associated multimedia or Internet-web-based application, the network will initiate the application. Processing of the incoming call may require accessing of a common database to acquire a location routing number for the call destination. To afford dynamic addressing of the IP endpoints, each may be referenced by a corresponding Universal Resource Locator (URL) (or other indirect mapping) associated with the IP address of the endpoint.

US Patent:

8040896, Oct 18, 2011

Filed:

Nov 25, 2008

Appl. No.:

12/313846

Inventors:

Han Q. Nguyen - Marlboro NJ, US
Tayfun Cataltepe - Fair Haven NJ, US
Samir S. Saad - Long Branch NJ, US

Assignee:

AT&T Intellectual Property II, L.P. - Reno NV

International Classification:

H04L 12/56

US Classification:

37039531, 370235, 370392

Abstract:

The present invention discloses a method and architecture for enabling multiple services or service providers to share the facilities of an access network infrastructure that provides physical connectivity to subscribers.

US Patent:

8089871, Jan 3, 2012

Filed:

Mar 25, 2005

Appl. No.:

11/090634

Inventors:

Ali M. Iloglu - Laurance Harbor NJ, US
Han Q. Nguyen - Marlboro NJ, US
John T. Mulligan - Brick NJ, US
Samir S. Saad - Long Branch NJ, US

Assignee:

AT&T Intellectual Property II, L.P. - Atlanta GA

International Classification:

G01R 31/08
G06F 7/04
G06F 11/00
G06F 12/14
H04L 12/28
H04L 12/56

US Classification:

370230, 370235, 37039532, 370401, 726 23, 726 26

Abstract:

A method and apparatus for providing traffic management for distributed denial of service (DDOS) traffic. Within a communications network, a DDOS detection system monitors network traffic to identify traffic that is designed to attack a particular server within the network and their entry points into the network. A traffic routing control unit is requested to deny service to the DDOS traffic. By selectively manipulating the routing information propagated to network edge routers, the traffic that is denied service is limited to mostly DDOS traffic and is routed to a cleaning center or a null address in the most effective fashion.

US Patent:

8296458, Oct 23, 2012

Filed:

Aug 24, 2009

Appl. No.:

12/546421

Inventors:

Richard T. Kwapniewski - Middletown NJ, US
Han C. Nguyen - Marlboro NJ, US

Assignee:

AT&T Intellectual Property I, LP - Reno NV

International Classification:

G06F 15/173

US Classification:

709238, 709220

Abstract:

A system includes a plurality of cache servers and a domain name server. Each of the cache servers is configured to respond to a content request. The plurality of cache servers is divided into a plurality of subsets and configured to respond to an anycast address for each subset to which the cache server belongs. The domain name server is configured to receive a request from a requester for a cache server address, identify an anycast address for a largest available subset, and provide the anycast address of the largest available subset to the requester.

US Patent:

8386629, Feb 26, 2013

Filed:

Dec 27, 2007

Appl. No.:

11/965456

Inventors:

Elysia Tan - Fairhaven NJ, US
Han Nguyen - Marlboro NJ, US

Assignee:

AT&T Intellectual Property I, L.P. - Atlanta GA

International Classification:

G06F 15/16
H04N 7/173

US Classification:

709231, 709204, 709217, 725 87

Abstract:

The invention relates to a method of distributing a non-live content stream in a network. The method comprises transmitting an initial meta-file in response to receiving a request for a non-live content stream. The initial meta-file comprises information, and the information identifies a division of the content stream, identifies a multicast source server and a unicast source server. The method also comprises transmitting at least a first portion of the non-live content stream using the multicast source server and at least a second portion of the non-live content stream using the unicast source server. Also, the invention relates to a system comprising a multicast source server adapted to transmit at least a first portion of the non-live content stream in response to transmission of an initial meta-file. The initial meta-file is transmitted in response to receiving a request for a non-live content stream.