Robert Scott Sparks

US Patent:

7607138, Oct 20, 2009

Filed:

Jun 15, 2005

Appl. No.:

11/154974

Inventors:

Steven R. Donovan - Plano TX, US
Ben A. Campbell - Irving TX, US
Adam B. Roach - Dallas TX, US
Robert J. Sparks - Plano TX, US
Ajay P. Deo - Lewisville TX, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G06F 9/44
G06F 15/173

US Classification:

719318, 709224

Abstract:

Event services provided between domains include receiving a first subscription request to receive an event state of an event source. A view associated with the first subscription request is determined. A notify message is sent that reflects a first defined view into the event state of the event source that corresponds to the first subscription request. A second subscription request is received to receive the event state of the event source. A view associated with the second subscription request is determined. It is determined if the first defined view corresponds to the second subscription request.

US Patent:

7756034, Jul 13, 2010

Filed:

Nov 29, 2005

Appl. No.:

11/290711

Inventors:

Steven R. Donovan - Plano TX, US
Ben A. Campbell - Irving TX, US
Adam B. Roach - Dallas TX, US
Robert J. Sparks - Plano TX, US
Ajay P. Deo - Lewisville TX, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 1/00

US Classification:

370235, 370231, 370236, 370410, 370468

Abstract:

A system and method for handling network overload includes receiving one or more requests, wherein an originating client originates the one or more requests. It is determined if a network element handling the one or more requests is overloaded. If the network element is overloaded, a pushback message associated with a specific request of the one or more requests is generated. The pushback message is sent to the originating client.

US Patent:

7760639, Jul 20, 2010

Filed:

Nov 29, 2005

Appl. No.:

11/290997

Inventors:

Steven R. Donovan - Plano TX, US
Ben A. Campbell - Irving TX, US
Adam B. Roach - Dallas TX, US
Robert J. Sparks - Plano TX, US
Ajay P. Deo - Lewisville TX, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 1/00

US Classification:

370235, 370231, 370236, 370410, 370468

Abstract:

A system and method for handling network overload includes receiving one or more requests, wherein an originating client originates the one or more requests. It is determined if a network element processing the one or more requests is overloaded. If the network element is overloaded, a pushback message is generated. The pushback message is sent with request gapping information to a previous hop in a network, wherein the previous hop is one or more network elements operable to route the one or more network requests to the network element processing the one or more requests.

US Patent:

8090850, Jan 3, 2012

Filed:

Dec 14, 2009

Appl. No.:

12/637587

Inventors:

Adam B. Roach - Dallas TX, US
Ben Allen Campbell - Irving TX, US
Robert J Sparks - Plano TX, US
Ajay P. Deo - Lewisville TX, US

Assignee:

Tekelec - Morrisville NC

International Classification:

G06F 15/16

US Classification:

709228, 709227, 709229, 709230, 709232, 709233, 709234, 709235

Abstract:

Methods, systems, and computer readable media for regulating pinhole preservation traffic generated or received by firewall or network address translator (NAT) session initiation protocol (SIP) user agent clients (UACs) are disclosed. One method includes, maintaining a list of contact information for a plurality of SIP UACs registering from behind at least one of a firewall and a NAT. The method further includes iterating through the list to generate SIP messages to the different UACs such that the SIP messages to the different UACs are spaced at substantially regular intervals with respect to each other, wherein the SIP messages to the different UACs trigger responses from the UACs such that the responses are spaced at substantially regular intervals with respect each other.

US Patent:

8321592, Nov 27, 2012

Filed:

Dec 14, 2009

Appl. No.:

12/637572

Inventors:

Adam B. Roach - Dallas TX, US
Ben A. Campbell - Irving TX, US
Robert J. Sparks - Plano TX, US
Ajay P. Deo - Lewisville TX, US

Assignee:

Tekelec, Inc. - Morrisville NC

International Classification:

G06F 15/16

US Classification:

709245, 709230, 709227, 709228, 709229

Abstract:

The subject matter described herein relates to methods, systems, and computer readable media for generating and using statelessly reversible representations of SIP information by SIP cluster entities. One method includes, at a first SIP cluster entity, receiving a first SIP message including SIP information. The method further includes generating a second SIP message including a statelessly reversible representation of the SIP information. The method further includes transmitting, to a SIP entity that is not a member of the cluster to which the first SIP entity belongs, the second SIP message with the statelessly reversible representation and information for reaching the cluster.

US Patent:

8499035, Jul 30, 2013

Filed:

Jan 6, 2011

Appl. No.:

12/985967

Inventors:

Adam Boyd Roach - Dallas TX, US
Robert James Sparks - Plano TX, US
Ben Allen Campbell - Irving TX, US
Ajay Padmakar Deo - Carrollton TX, US
Sam Eric McMurry - Richardson TX, US

Assignee:

Tekelec, Inc. - Morrisville NC

International Classification:

H04L 29/00

US Classification:

709203, 709223

Abstract:

Methods, systems, and computer readable media system for collecting and distributing session initiation protocol (SIP) event watcher entity subscription information in a communications network are disclosed. According to one aspect, a system includes one or more notifier servers for receiving subscription requests for SIP event information associated with a plurality of watched entities from a plurality of watcher entities. The system further includes a watcher information (WINFO) server for receiving, from the notifier servers, SIP event subscription information that includes, for each watcher entity, an association between the watcher entity to each of the watched entities in which a subscription for SIP event information was requested by the watcher entity, for storing the SIP event subscription information in the WINFO server, for receiving, from one of the watched entities, a request for watcher entity subscription information associated with the requesting watched entity from one of the watched entities, and for accessing the SIP event subscription information to locate the watcher entity subscription information associated with the requesting watched entity.

US Patent:

8645565, Feb 4, 2014

Filed:

Jul 30, 2009

Appl. No.:

12/512971

Inventors:

Robert J. Sparks - Plano TX, US
Adam B. Roach - Dallas TX, US
Byron Campen - Dallas TX, US

Assignee:

Tekelec, Inc. - Morrisville NC

International Classification:

G06F 15/16

US Classification:

709235, 709203

Abstract:

Methods, systems, and computer readable media for throttling traffic to an IP network server using alias hostname identifiers assigned to the IP network server with a domain name system are disclosed. One method includes maintaining a plurality of weight values and corresponding alias hostname identifiers for the IP network server that are associated with the IP network server in a DNS system. The method further includes throttling network traffic sent to an IP network server by sending, from the IP network server, messages to nodes that send the traffic to the IP network server, where the messages selectively enable or disable traffic flow to the individual alias hostnames.

US Patent:

20100027532, Feb 4, 2010

Filed:

Jul 31, 2009

Appl. No.:

12/533617

Inventors:

Robert J. Sparks - Plano TX, US
Ben Allen Campbell - Irving TX, US
Adam B. Roach - Dallas TX, US
Ajay P. Deo - Lewisville TX, US

International Classification:

H04L 12/66

US Classification:

370352

Abstract:

Methods, systems, and computer readable media for providing sedation service in a telecommunications network are disclosed. According to one aspect, a method for providing sedation service in a telecommunications network is provided. The method includes steps that are performed at a session initiation protocol (SIP) sedation node. The method includes receiving a first message sent from a SIP user agent and intended for a SIP server. The method further includes determining whether the SIP server is unavailable. The method further includes responsive to a determination that the SIP server is unavailable to respond to the first message, sending, to the SIP client, a SIP sedation message for reducing the number or frequency of messages sent by the SIP user agent to the SIP server.