James L Polk

US Patent:

7693060, Apr 6, 2010

Filed:

Oct 12, 2007

Appl. No.:

11/974501

Inventors:

James M. Polk - Colleyville TX, US
Subhasri Dhesikan - San Jose CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 12/26

US Classification:

370231, 370230, 370329

Abstract:

A method and corresponding apparatus establish a reservation in a segment of an end-to-end path between a data sender and a data receiver, up to a point in the end-to-end path; attempt to establish another reservation in an adjacent segment of the end-to-end path, beyond the point in the end-to-end path; and in an event that the other reservation is established in the adjacent segment of the end-to-end path, bind the other reservation to the reservation established in the segment of an end-to-end path up to the point in the end-to-end path.

US Patent:

7764945, Jul 27, 2010

Filed:

Mar 8, 2006

Appl. No.:

11/371606

Inventors:

James M. Polk - Colleyville TX, US
Cullen F. Jennings - San Jose CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04M 11/04

US Classification:

4554041, 379 9001

Abstract:

A system and a method are disclosed for authenticating a subsequent callback from a public safety answering point (PSAP) in response to a user agent's initial emergency call. In one embodiment, the user agent forwards a token to the PSAP during the initial call, and the PSAP returns the token during callback. The PSAP is authenticated when the forwarded and returned tokens match. In another embodiment, the user agent encrypts a token using a Public Key Infrastructure and forwards the encrypted token to the PSAP. The PSAP decrypts the token and, upon callback, includes a signed digital certificate based on the token. The user agent authenticates the PSAP when the decrypted digital certificate matches the originally sent token. In yet another embodiment, the user agent forwards a first token to the PSAP. Upon callback, the user agent forwards a second token to the PSAP.

US Patent:

7826454, Nov 2, 2010

Filed:

Jun 29, 2007

Appl. No.:

11/824585

Inventors:

James M. Polk - Colleyville TX, US
Subhasri Dhesikan - San Jose CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 12/28

US Classification:

370392, 370235, 370408

Abstract:

In one embodiment, a method and corresponding apparatus, in a network, treat a reservation for network layer resources according to a domain of reservation treatment to which the reservation belongs.

US Patent:

8031603, Oct 4, 2011

Filed:

Jun 30, 2005

Appl. No.:

11/173909

Inventors:

James M. Polk - Colleyville TX, US
Subhasri Dhesikan - San Jose CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 1/00

US Classification:

370235, 370468, 709229, 709240

Abstract:

A technique that allows existing reservations to be partially preempted by higher-priority reservations. An intermediate node receives a request to reserve resources for the higher-priority reservation. The higher priority entitles the reservation to acquire resources allocated to existing lower priority reservations, if necessary. If sufficient unallocated resources are not available on the preempting system to accommodate the higher-priority reservation, an error message is generated and forwarded by the intermediate node towards a receiver associated with the reservation that is to be partially preempted. The error message contains an error code and an amount of resources available on the intermediate node. The receiver processes the error message including selecting a reservation to be torn down, tearing down the selected reservation and re-reserving resources for remaining reservations, as necessary.

US Patent:

8068586, Nov 29, 2011

Filed:

Jan 26, 2007

Appl. No.:

11/627565

Inventors:

James M. Polk - Colleyville TX, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04M 11/00

US Classification:

379 37, 379 45, 4554042

Abstract:

Determining a local emergency dial-string includes determining location information of an endpoint in a network. The location information indicates a current location of the endpoint. An emergency dial-string is received. The emergency dial-string is determined according to the location information, and the emergency dial-string operates to contact an emergency service associated with the current location of the endpoint.

US Patent:

8156536, Apr 10, 2012

Filed:

Dec 1, 2006

Appl. No.:

11/607404

Inventors:

James M. Polk - Colleyville TX, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G06F 21/00

US Classification:

726 1, 713166, 713167, 713168, 713169, 713170, 713171, 713172, 713150, 713151, 713152, 713153, 709225, 709228, 709229, 726 2, 726 3, 726 4

Abstract:

In one embodiment, a method for establishing a session between a first party and a second party in a communication network comprises issuing a request to establish the session with the second party, the request containing a first security level associated with the first party. A response is received to the request from the second party, the response containing a second security level associated with the second party. A security level for the session is identified from the first security level and the second security level and the session established at the identified security level.

US Patent:

8190134, May 29, 2012

Filed:

Jul 31, 2006

Appl. No.:

11/496272

Inventors:

James M. Polk - Colleyville TX, US
Cullen F. Jennings - San Jose CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04M 3/42

US Classification:

4554142, 4554143

Abstract:

A technique for displaying information ancillary to an entity's location. A request for information ancillary to the location of a communication unit in a communication network is generated by the communication unit wherein the request contains a location of the communication unit as well as specifies the information ancillary to the communication unit's location that is sought. The request is forwarded to an information server in the communication network which may be a “trusted source” meaning that the communication unit considers the information server a reliable (trustworthy) source of information. The information server receives the request and identifies the requested information using the location information contained in the request. A response (notification) containing the identified information is then generated by the information server and forwarded to the communication unit. The communication unit receives the notification and processes it accordingly, including displaying the identified information in a manner that indicates the requested information is available.

US Patent:

8412804, Apr 2, 2013

Filed:

Jan 6, 2006

Appl. No.:

11/327151

Inventors:

James M. Polk - Colleyville TX, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G01C 21/34

US Classification:

709221, 370352, 701202, 701209, 701213, 707102, 340995

Abstract:

A technique for providing information relative to an entity's location to an entity in a communication network. A request for information is generated by a first entity wherein the request contains a location of the first entity. The request is then forwarded to a second entity which illustratively is a trusted source in the communication network. The second entity receives the request and identifies the requested information using the location information contained in the request. A notification containing the identified information is then generated by the second entity and forwarded to the first entity. The first entity receives the notification and processes it accordingly.