Bich Thi Nguyen

US Patent:

6888808, May 3, 2005

Filed:

Sep 15, 2003

Appl. No.:

10/664984

Inventors:

Ramanathan T. Jagadeesan - San Jose CA, US
Bich T. Nguyen - Los Altos CA, US
Kamaldip Toor - San Diego CA, US
Sudhakar S. Valluru - San Jose CA, US
Christopher E. Pearce - Dallas TX, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04Q007/00

US Classification:

370328, 455432

Abstract:

A method is provided that includes receiving a request from a communication device to establish a communication session with a mobile station, the mobile station being operable to roam between a private and a public network. The mobile station is signaled via a cellular data network that a call is being initiated for the mobile station. Signaling information may be exchanged with a voice gateway such that one or more voice circuits are established. A signaling pathway may be established between an Internet protocol private branch exchange (IP PBX) and the mobile station via the cellular data network. The establishment of the signaling pathway is substantially concurrent with the establishment of one or more of the voice circuits. One or more features associated with a private network are delivered to the mobile station during the communication session as an end user moves between the public and private networks.

US Patent:

6999417, Feb 14, 2006

Filed:

Nov 30, 2001

Appl. No.:

09/998866

Inventors:

Philip R. Graham - Milpitas CA, US
Ramanathan T. Jagadeesan - San Jose CA, US
Bich Tu Nguyen - Los Altos CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04J 1/16
H04J 3/14

US Classification:

370230, 370235

Abstract:

Devices, software, and methods quantify a burstiness quality of the packet loss in the node of a path. The quantified burstiness becomes a metric for determining the Quality of Service (QoS) offered by a node in retransmitting data through a network. Network routing and rerouting decisions are made according to the improved QoS. The burstiness statistic is determined by counting lengths of episodes of sequentially discarded packets at the node. The burstiness statistic is incorporated as a metric with the other metrics of the QoS of the node.

US Patent:

7035282, Apr 25, 2006

Filed:

Apr 10, 2001

Appl. No.:

09/832456

Inventors:

Ramanathan Jagadeesan - San Jose CA, US
Bich Nguyen - Los Altos CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04J 3/16

US Classification:

370465, 370401, 370469

Abstract:

Wideband telephones, gateways, adapters, software, and methods are provided for implementing wideband telephony over a network. A WB IP telephone has a WB telephone, a codec for encoding voice into voice data bits, and a packetizer for encoding groups of the voice data bits in intermediate packets. An adapter for an analog WB telephone has a digital to analog converter, a codec and a packetizer. The intermediate packets are generally not in form that would be ready for network transmission. The WB IP telephone also includes a modem for connecting to the network over a telephone line. A voice gateway receives the encoded voice, and adds packet headers to it, to make it suitable for transmission through the network to a cooperating gateway. The cooperating gateway in turn strips the headers for the receiving WB IP telephone. The WB IP telephones can thus be connected to the network using only PSTN lines.

US Patent:

7035734, Apr 25, 2006

Filed:

Dec 10, 2003

Appl. No.:

10/732725

Inventors:

Shmuel Shaffer - Palo Alto CA, US
Gebran G. Chahrouri - Menlo Park CA, US
Joseph F. Khouri - San Jose CA, US
Bich Tu Nguyen - Los Altos CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G01C 21/26
G01C 21/30

US Classification:

701210, 701201, 701211, 34099512, 34099513, 34099523

Abstract:

A method for communicating navigation information includes receiving destination information from a user. The destination information comprises a desired destination of the user. The method includes determining a first route to the destination and communicating the first route to the user. The method includes monitoring position information of a plurality of vehicles and identifying an area causing traffic delay using the position information of the plurality of vehicles. The method also includes determining a second route to the destination to avoid the area and communicating the second route to the user.

US Patent:

7068622, Jun 27, 2006

Filed:

Feb 21, 2005

Appl. No.:

11/063285

Inventors:

Ramanathan T. Jagadeesan - San Jose CA, US
Bich T. Nguyen - Los Altos CA, US
Kamaldip Toor - San Diego CA, US
Sudhakar S. Valluru - San Jose CA, US
Christopher E. Pearce - Dallas TX, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04Q 7/00

US Classification:

370328, 455432

Abstract:

A method is provided that includes receiving a request from a communication device to establish a communication session with a mobile station, the mobile station being operable to roam between a private and a public network. The mobile station is signaled via a cellular data network that a call is being initiated for the mobile station. Signaling information may be exchanged with a voice gateway such that one or more voice circuits are established. A signaling pathway may be established between an Internet protocol private branch exchange (IP PBX) and the mobile station via the cellular data network. The establishment of the signaling pathway is substantially concurrent with the establishment of one or more of the voice circuits. One or more features associated with a private network are delivered to the mobile station during the communication session as an end user moves between the public and private networks.

US Patent:

7072291, Jul 4, 2006

Filed:

Aug 23, 2001

Appl. No.:

09/938741

Inventors:

Ramanathan Jagadeesan - San Jose CA, US
Bich Nguyen - Los Altos CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G01R 31/08

US Classification:

370216, 704262

Abstract:

Devices, softwares and methods are provided for redundantly encoding a data stream into frames for network transmission as packets. A main encoder encodes a data stream into main frames, while a redundant encoder encodes it into redundant frames. The redundant frames have a redundant-coding delay from the main frames that is adjustable to accommodate many different sets of network conditions.

US Patent:

7076251, Jul 11, 2006

Filed:

Sep 11, 2003

Appl. No.:

10/660172

Inventors:

Ramanathan T. Jagadeesan - San Jose CA, US
Bich T. Nguyen - Los Altos CA, US
Kamaldip Toor - San Diego CA, US
Troy M. Trenchard - Los Gatos CA, US
Sudhakar S. Valluru - San Jose CA, US
Tony T. Wan - Mountain View CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04Q 7/20

US Classification:

455445, 455417, 455560, 455461, 370331, 370401, 370352

Abstract:

A method is provided that includes receiving a request from a communication device to establish a communication session with a mobile station. The request is responded to by signaling the mobile station via a cellular data network that a call is being initiated for the mobile station. Signaling information may be exchanged with a voice gateway such that one or more voice circuits are established to accommodate voice data that may propagate between the communication device and the mobile station. A signaling pathway may be established between an Internet protocol private branch exchange (IP PBX) and the mobile station via the cellular data network. The establishment of the signaling pathway is substantially concurrent with the establishment of one or more of the voice circuits such that one or more features associated with a private network are delivered to the mobile station during the communication session.

US Patent:

7082301, Jul 25, 2006

Filed:

Sep 12, 2003

Appl. No.:

10/661265

Inventors:

Ramanathan T. Jagadeesan - San Jose CA, US
Bich Tu Nguyen - Los Altos CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04Q 7/20
H04J 11/00
G06F 15/16

US Classification:

455436, 455438, 455441, 370210, 370328, 370329, 709250

Abstract:

A method for handing off a call between networks includes monitoring a quality of a first link between a mobile station and a wireless local area network (WLAN) when the mobile station is actively connected with the WLAN on a call and monitoring a quality of a second link between the mobile station and a cellular network when the mobile station is actively connected with the WLAN on the call. The method also includes handing off the call from the WLAN to the cellular network when the quality of the first link is less than a handoff trigger threshold for a drop count duration and when the quality of the second link is greater than a minimum cellular link quality threshold.