Dilip Dinkar Kandlur

Author:

Dilip D. Kandlur

ISBN #:

0819427500

Author:

Dilip D. Kandlur

ISBN #:

0819431257

US Patent:

6430622, Aug 6, 2002

Filed:

Sep 22, 1999

Appl. No.:

09/401419

Inventors:

Michael Edward Baskey - Wappingers Falls NY
James L. Hall - Raleigh NC
Dilip Dinkar Kandlur - Yorktown Heights NY
Andrew H. Richter - Raleigh NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1516

US Classification:

709245, 709239, 709230

Abstract:

Methods, systems and computer program products are provided for transferring a Virtual IP Address (VIPA) from a first application instance to a second application instance executing on a cluster of data processing systems having a plurality of communication protocol stacks. A list of dynamic VIPAs is distributed among the protocol stacks and a hierarchy of backup communication protocol stacks for the dynamic VIPAs is determined based on the list of dynamic VIPAs. Upon receiving notification of failure of the first stack the second stack evaluates the hierarchy of backup stacks to determine if it is the next stack in the hierarchy for the VIPA associated with the first application instance. If so, then the VIPA associated with the first application instance is transferred to the second communication protocol stack associated with the second application instance.

US Patent:

6519636, Feb 11, 2003

Filed:

Oct 28, 1998

Appl. No.:

09/181376

Inventors:

Robert Engel - Greenwich CT
Tsipora P. Barzilai - Tel Aviv, IL
Dilip Dinkar Kandlur - Yorktown Heights NY
Ashish Mehra - White Plains NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 15173

US Classification:

709223, 709203, 709224, 709231, 709232, 709233, 709250, 370229, 370252

Abstract:

A computer connected to one or more networks through appropriate network interfaces is used to classify, manipulate, and/or control communications, e. g. , packets sent and/or received over the network by one or more applications executing in the computer. Each application is connected to the network through one or more sockets to enable this communication. The computer also comprises one or more rule sets of one or more rules. A socket set of one or more of the sockets is associated with only one of the rule sets. The rules in the rule set are used to control one or more of the packets communicated by the applications communicating over the socket(s) associated with the respective rule set. Rules can be added to the rule set, deleted from the rule set, or modified in order to classify, manipulate, and/or control the communication of the packets, e. g. to control the rate at which the packets are sent or to provide certain security functions.

US Patent:

6732269, May 4, 2004

Filed:

Oct 1, 1999

Appl. No.:

09/411471

Inventors:

Michael Edward Baskey - Wappingers Falls NY
Timothy James Hahn - Vestal NY
Dilip Dinkar Kandlur - Yorktown Heights NY
David Gerard Kuehr-McLaren - Apex NC

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 124

US Classification:

713153, 713161, 713165, 713170, 713189, 713200

Abstract:

Methods, systems and computer program products are provided which communicate between client applications and a transaction server by establishing a persistent secure connection between the transaction server and a Secure Socket Layer (SSL) proxy server. A first session specific SSL connection, different from the persistent secure connection, is also established between a first client application and the SSL proxy server. Communications between the first client application and the SSL proxy server transmitted over the first session specific SSL connection are then forwarded with the clients identity preserved to the transaction server over the persistent secure connection. Furthermore, a second session specific SSL connection between a second client application and the SSL proxy server may also be established and the communications between the second client application and the SSL proxy server transmitted over the second session specific SSL connection are forwarded to the transaction server over the persistent secure connection. Preferably, the persistent secure connection is an SSL connection.

US Patent:

7054421, May 30, 2006

Filed:

May 31, 2002

Appl. No.:

10/160517

Inventors:

Dilip D. Kandlur - Yorktown Heights NY, US
Dave B. Lindquist - Raleigh NC, US
Baiju D. Mandalia - Boca Raton FL, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04M 11/00

US Classification:

379 9315, 379 9326, 379 8801

Abstract:

A method of enabling a legacy interactive voice response unit to accept multiple forms of user input can include associating dual tone multi-frequency selectable options of the legacy interactive voice response unit with non-dual tone multi-frequency user inputs. A non-dual tone multi-frequency user input can be received and processed to determine at least one dual tone multi-frequency selectable option that is associated with the received user input. Dual tone multi-frequency signals can be generated for selecting the at least one dual-tone multi-frequency selectable option associated with the user input. The dual tone multi-frequency signals can be provided to the legacy interactive voice response unit.

US Patent:

7353255, Apr 1, 2008

Filed:

Oct 30, 2003

Appl. No.:

10/697834

Inventors:

Arup Acharya - Nanuet NY, US
Rong N Chang - Pleasantville NY, US
Dilip Kandlur - San Jose CA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 15/16
G06F 15/177

US Classification:

709204, 709205, 709207, 709218, 709222

Abstract:

The present invention is directed to a system, including apparatus and architecture, and method for providing scheduled and ad hoc voice over IP conference services having enhanced quality and reliability. The system uses an overlay network of geographically distributed conference servers working simultaneously and collaboratively to host a given conference session. Multiple conference servers simultaneously and collaboratively perform the necessary audio mixing. The voice routing path is established and controlled within the overlay network and supports conference services across different conference service providers.

US Patent:

7376129, May 20, 2008

Filed:

Oct 29, 2003

Appl. No.:

10/695856

Inventors:

Arup Acharya - Nanuet NY, US
Dilip Dinkar Kandlur - Yorktown Heights NY, US
Priya Mahadevan - Durham NC, US
Aameek Singh - Atlanta GA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L 12/66

US Classification:

370352, 370353, 370401, 709229

Abstract:

A method and system for enabling voice over Internet for computer applications includes registering session initiation protocol (SIP) as a system service and providing SIP service through an application programming interface (API) to permit access to service functions by individual software applications. A SIP link is provided within a software application to permit user invocation of SIP service functions. The link may be passed as a parameter to permit external access to an invoked service function.

US Patent:

7701854, Apr 20, 2010

Filed:

Nov 17, 2003

Appl. No.:

10/714732

Inventors:

Arup Acharya - Nanuet NY, US
Dilip Dinkar Kandlur - San Jose CA, US
Prashant Pradhan - New Rochelle NY, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L 12/26

US Classification:

370235, 3702301, 370429

Abstract:

Systems and methods are disclosed for differentiated handling of VoIP call control messages according to their importance and functionality, thus providing to VoIP infrastructures a level of robust call control similar to that in PSTN networks. SIP messages are classified by their type or content, and resources of a VoIP call control server are allocated to the SIP messages according to a policy. The scheme also provides overload protection and prioritized handling of certain kinds of requests in VoIP call control servers.

US Patent:

7783704, Aug 24, 2010

Filed:

Jan 21, 2008

Appl. No.:

12/017187

Inventors:

Arup Acharya - Nanuet NY, US
Rong N Chang - Pleasantville NY, US
Dilip Kandlur - San Jose CA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 15/16
G06F 15/177

US Classification:

709204, 709205, 709207, 709218, 709222

Abstract:

The present invention is directed to a system, including apparatus and architecture, and method for providing scheduled and ad hoc voice over IP conference services having enhanced quality and reliability. The system uses an overlay network of geographically distributed conference servers working simultaneously and collaboratively to host a given conference session. Multiple conference servers simultaneously and collaboratively perform the necessary audio mixing. The voice routing path is established and controlled within the overlay network and supports conference services across different conference service providers.