Jerry Lindsay Ray

US Patent:

7643817, Jan 5, 2010

Filed:

May 18, 2005

Appl. No.:

11/132643

Inventors:

Keith M. Klug - Mesa AZ, US
Stuart S. Kreitzer - Coral Springs FL, US
Brent M. McKay - Chandler AZ, US
Bradley J. Rainbolt - Sunrise FL, US
Fred R. Villa - Gilbert AZ, US
Marc A. Boillot - Plantation FL, US
Ty B. Lindteigen - Chandler AZ, US
Bernard R. McKibben - Gilbert AZ, US
Jerry D. Ray - Phoenix AZ, US
Michael A. Savage - Chandler AZ, US
Bryce Sutherland - Gilbert AZ, US
Barbara S. Winterfield - Mesa AZ, US

Assignee:

General Dynamics C4 Systems, Inc. - Scottsdale AZ
Motorola, Inc. - Schaumburg IL

International Classification:

H04M 1/66
H04K 1/00

US Classification:

455411, 455518, 455517

Abstract:

Techniques are provided for secure group communications in a wireless dispatch system which includes a group of devices. The group of devices can include a first secure device which communicates with a plurality of second secure devices over a channel.

US Patent:

7747021, Jun 29, 2010

Filed:

May 18, 2005

Appl. No.:

11/132707

Inventors:

Ty B. Lindteigen - Chandler AZ, US
Bernard R. McKibben - Louisville CO, US
Jerry D. Ray - Phoenix AZ, US
Michael A. Savage - Chandler AZ, US
Bryce Sutherland - Gilbert AZ, US
Barbara S. Winterfield - Mesa AZ, US
Keith M. Klug - Mesa AZ, US
Stuart S. Kreitzer - Coral Springs FL, US
Brent M. McKay - Chandler AZ, US
Bradley J. Rainbolt - Sunrise FL, US
Fred R. Villa - Gilbert AZ, US
Marc A. Boillot - Plantation FL, US

Assignee:

General Dynamics C4 Systems, Inc. - Scottsdale AZ
Motorola, Inc. - Schaumburg IL

International Classification:

H04L 9/00

US Classification:

380274, 380270

Abstract:

Methods and apparatus are provided for secure communication techniques in a communication system. The system can include a first device which communicates with a second device over a channel. A security association can be established during a first session between the devices via an asymmetric key exchange. The security association comprises a Traffic Encryption Key (TEK) and a first state vector. The TEK comprises a shared, secret symmetric key. The security association is stored in each of the devices for use during a second session between the devices to expedite security association establishment during call set-up of the second session. The security association can be associated with the second device in the first device, and with the first device in the second device. An updated state vector can be generated at the first device. A second session can be established between the first device and the second device by using the TEKs from the first session and the updated state vector.

US Patent:

6829249, Dec 7, 2004

Filed:

Sep 21, 2000

Appl. No.:

09/666758

Inventors:

Jerry Ray - Chandler AZ
Ray Campbell - Gilbert AZ

Assignee:

Inter-Tel, Inc. - Tempe AZ

International Classification:

H04J 316

US Classification:

370466, 370352

Abstract:

A system and method is designed for upgrading a digital PBX used with a pulse code modulation (PCM) telephone system by providing an interface card connected to the back plane of the PBX. The interface card acts as a replacement for the digital key set cards normally used with the back plane of such a PBX. The interface card is designed with circuitry to process voice-encoded packet data directly from a LAN to the PCM data used within the PBX network, and to process PCM data from the telephone network to voice coded packet data on the LAN to provide a voice-over Internet protocol and interface with the telephone system connected with and controlled by the PBX.