Mohammed Zain Shaikh

US Patent:

7688809, Mar 30, 2010

Filed:

May 3, 2006

Appl. No.:

11/417763

Inventors:

Raghunath Dendukuri - Milpitas CA, US
Parameswaran Kumarasamy - San Jose CA, US
Mohammed Taher Shaikh - Fremont CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 12/66

US Classification:

370352, 3703952

Abstract:

Systems and techniques to determine that a VoIP call is an inactive media call. One or more counters may be used to determine information indicative of an elapsed time since the last valid media packet sent/received. When the elapsed time exceeds a threshold time, the call is determined to be an inactive media call. The call may be designated as inactive, may be terminated, or other action may be taken based on the determination that the call is an inactive media call.

US Patent:

7778180, Aug 17, 2010

Filed:

Feb 21, 2007

Appl. No.:

11/709512

Inventors:

Mohammed T. Shaikh - Fremont CA, US
Todd M. Baker - Los Altos CA, US
Sabita Jasty - San Jose CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 12/28

US Classification:

370235, 370231

Abstract:

Negotiation of RSVP reservations prior to the setup of a call, rather than negotiating reservation parameters during the call. RSVP reservation parameters are negotiated prior to ringing a device, rather than after. In some embodiments, this is achieved by including information in the initial call signaling elements. This added information allows negotiation with each device in the proposed data path to determine, prior to ringing the terminating device in the data path, whether each of the devices can support the proposed data link.

US Patent:

7822858, Oct 26, 2010

Filed:

Apr 26, 2006

Appl. No.:

11/411367

Inventors:

Parameswaran Kumarasamy - San Jose CA, US
Jayesh Chokshi - Cupertino CA, US
Mohammed Taher Shaikh - Fremont CA, US
Vinay Pande - San Jose CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G06F 15/16

US Classification:

709227, 709229, 709226, 709249, 709207, 709245, 709205, 709228, 370352, 370242, 370328, 370466, 370401, 370389, 370349, 370465, 455434, 455433, 4554261, 379 8817, 379 8818

Abstract:

Techniques for providing a bulk refresh of sessions in a network are provided. A plurality of session identifiers for sessions that were created are determined. These session identifiers may be included in a bulk refresh message. The bulk refresh message is sent to a device configured to determine if sessions associated with the plurality of session identifiers are active or inactive. The device then sends a response to the refresh requestor. The response can be used to determine which sessions are active or inactive. After the determination, actions can be taken in order to clear the hanging session. For example, the session may be torn down or a BYE message may be sent to end the session on a peer device.

US Patent:

8064435, Nov 22, 2011

Filed:

Mar 1, 2007

Appl. No.:

11/681081

Inventors:

Mohammed Taher Shaikh - Fremont CA, US
Paul R. P. Chu - Saratoga CA, US
Sunila R. Ainapure - Sunnyvale CA, US
Viraj Raut - Cupertino CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 12/28
H04L 12/56
H04L 12/66
H04J 3/16
H04M 11/00
G06F 15/16

US Classification:

370352, 370401, 370467, 379 9315, 709228

Abstract:

Methods and systems for optimizing interworking between various communication protocols are provided. The method comprises establishing a communication connection between a first endpoint and a second endpoint, wherein the first endpoint communicates over a first communication protocol and wherein the second endpoint communicates over a second communication protocol; and monitoring communication between the first and second endpoints such that communication messages that are transmitted by the first endpoint over the first communication protocol can be mapped to counterpart messages to be received by the second endpoint over the second communication protocol, and communication messages that are transmitted by the second endpoint over the second communication protocol can be mapped to counterpart messages received by the first endpoint over the first communication protocol.

US Patent:

8351439, Jan 8, 2013

Filed:

May 3, 2006

Appl. No.:

11/417820

Inventors:

Paul Chu - Saratoga CA, US
Mohammed Taher Shaikh - Fremont CA, US
Parameswaran Kumarasamy - San Jose CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 12/28

US Classification:

370401, 370241

Abstract:

Techniques for determining media statistics for a communication from a first device to a second device are provided. The techniques include receiving media traffic for the communication at a network device configured to receive the media traffic from the first device. The network device is also configured to transmit the media traffic to the second device. A copy of the received media traffic is also forked to a processor. The received media traffic is sent to the second device while the forked copy of the media traffic is analyzed at the processor to generate media statistics about the media traffic.

US Patent:

8526447, Sep 3, 2013

Filed:

Mar 3, 2006

Appl. No.:

11/367662

Inventors:

Parameswaran Kumarasamy - San Jose CA, US
Mohammed Taher Shaikh - Fremont CA, US
Paul Chu - Saratoga CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 12/28
H04L 12/56
H04J 3/16
H04J 3/22
H04M 11/00
H04N 1/00

US Classification:

370401, 370466, 370467, 379 8813, 37910016, 358407

Abstract:

A network device has a H. 323 interface to communicate under a H. 323 standard of the International Telecommunications Union. The device also has a Session Initiation Protocol (SIP) interface. A processor converts signaling messages between H. 323 and Session Initiation Protocol to establish a fax session for communication of packetized fax signals and data.

US Patent:

20070226361, Sep 27, 2007

Filed:

Mar 23, 2006

Appl. No.:

11/388672

Inventors:

Mohammed Shaikh - Fremont CA, US
Parameswaran Kumarasamy - San Jose CA, US
Jayesh Chokshi - Cupertino CA, US
Vinay Pande - San Jose CA, US

International Classification:

G06F 15/16

US Classification:

709230000

Abstract:

In accordance with at least one embodiment of the present invention, a communication apparatus includes a communication unit configured to send and receive messages on a network. Each message has a message header configured to include a plurality of header fields, where the message header includes a suppression header field that indicates a request to suppress at least one header field in at least one subsequently sent or received message. The communication apparatus is configured to establish a suppressed header field message exchange session with a peer on the network so that at least one subsequent message exchanged between the communication apparatus and the peer is free of at least one suppressible header field.

US Patent:

20070286157, Dec 13, 2007

Filed:

Jun 7, 2006

Appl. No.:

11/448280

Inventors:

Mohammed Taher Shaikh - Fremont CA, US
Viraj Raut - Santa Clara CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 12/28

US Classification:

370351

Abstract:

Techniques and systems for inter-working between different protocols are disclosed. In one embodiment, a protocol inter-working system can include: (i) a first server that can connect to a first gateway, where the first server and the first gateway can operate in a first protocol; (ii) a second server that can connect to a second gateway, where the second server and the second can operate in a second protocol; and (iii) a controller that can connect to the first and second gateways, where the controller can translate a first indicator in the first protocol to a second indicator in the second protocol. The first and second protocols can include H.323 and session initiation protocol (SIP), for example. The first and second indicators can each include a message waiting indicator (MWI), for example.