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US Patent 7782787 Rapid fault detection and recovery for internet protocol telephony

Patent 7782787 was granted and assigned to Avaya on August, 2010 by the United States Patent and Trademark Office.

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Patent
Patent
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Patent attributes

Current Assignee
Avaya
Avaya
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Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
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Patent Number
77827870
Patent Inventor Names
Parameshwaran Krishnan0
Juan Jenny Li0
Mark John Karol0
Date of Patent
August 24, 2010
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Patent Application Number
109530240
Date Filed
September 29, 2004
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Patent Primary Examiner
‌
Jason E Mattis
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Patent abstract

Techniques for performing rapid fault detection and recovery in communication networks are disclosed. For example, in one aspect of the invention, a technique for detecting one or more conditions in a communication network comprises the following steps/operations. One or more keep-alive packets are transmitted from a source node in the communication network to a destination node in the communication network over two or more paths between the source node and the destination node, wherein the two or more paths are at least partially disjoint. Upon receipt of the one or more keep-alive packets at the destination node via the two or more paths, at least one quality measure is computed at the destination node for each of the two or more paths, the at least one quality measure being indicative of one or more conditions in the communication network. While not limited thereto, the invention is particularly well-suited to Internet Protocol (IP) telephony networks, particularly those that provide Voice over IP (VoIP) applications.

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