Roy Emery Hanzel

US Patent:

6961774, Nov 1, 2005

Filed:

Aug 2, 2001

Appl. No.:

09/922086

Inventors:

Michael L. Shannon - San Jose CA, US
Manjari Asawa - Cupertino CA, US
Roy E. Hanzel - Allen TX, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G06F015/16

US Classification:

709227, 709249, 455436

Abstract:

A system for performing a hand-off between two IP core networks in the wireless domain includes a source mobility control function (MCF) within a source IP core network that is coupled to a source access network providing service to a mobile unit. The source MCF is coupled to a source bearer path gateway (BPGW) within the source IP core network. The source BPGW communicates bearer traffic associated with the mobile unit between the source access network and a public switched telephone network (PSTN) gateway within the source IP core network. The PSTN gateway communicates the bearer traffic between the source BPGW and a PSTN coupled to the source IP core network. The source MCF is functionally separate from a call agent (CA) within the source IP core network. The CA is also coupled to the source BPGW. The CA sets up a first segment of a bearer path for the bearer traffic between the source BPGW and the PSTN gateway, and the source MCF sets up a second segment of the bearer path for the bearer traffic between the source access network and the source BPGW.

US Patent:

7110764, Sep 19, 2006

Filed:

Dec 21, 2000

Appl. No.:

09/748759

Inventors:

Dana Blair - Alpharetta GA, US
Roy Hanzel - Allen TX, US
Michael Shannon - San Jose CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04Q 7/20

US Classification:

455436, 4554321, 455433, 4554351

Abstract:

The functions performed by a mobile switching center (MSC) may be divided between two entities. A mobile control function performs mobility management functions such as roaming control, implementing hand-off, and coordinating bearer traffic flow. A call agent performs call control functions such as call setup, call tear down, and advanced call features such as call hold, call waiting, etc. The call agent is preferably unaware of mobile specific interfaces and can support multiple access network types including cable, DSL, PSTN, etc. This provides feature transparency for users as they use devices in each of the access domains.

US Patent:

6732174, May 4, 2004

Filed:

May 5, 1998

Appl. No.:

09/072828

Inventors:

Chandrakant Gundecha - Raleigh NC
William David Gentry - Cary NC
Roy Emery Hanzel - Apex NC
C. Michael Brown - Raleigh NC
Sanjay Bhatia - Raleigh NC
David Anthony Gallagher - Fuquay-Varina NC

Assignee:

Nortel Networks Limited - St. Laurent

International Classification:

G06F 1300

US Classification:

709227, 709313, 37922001, 379229

Abstract:

An integrated wireless and wireline telecommunication switch. The switch includes peripheral modules having both wireless and wireline peripheral devices. The switch also includes wireless and wireline software load. An aspect table allows the wireless and wireline software load within the switch to be executed within a single call without creating direct dependencies on each other. The switch allows new and more efficient connections between wireless and wireline subscribers. In many cases wireless and wireline subscribers having direct access to the switch can connect without using any other switches in the network.