Method and apparatus for fault tolerant permanent voice calls in voice-over-packet systems

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7068594
SERIAL NO

09258674

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A Multiservice Access Concentrator (MAC) is provided that provides fault tolerant permanent voice calls in a voice over packet-data-network system (VOPS). The MAC sets up at least one permanent voice call by coupling a number of nodes in series using a voice-over-packet protocol and a set of primary connection bindings. Furthermore, at least one set of alternate connection bindings are defined for the permanent voice call. At least one preference-based list is generated comprising the sets of alternate connection bindings. Each node operating with the voice-over-packet protocol is capable of determining at least one out-of-service state for the node. A failure of at least one of the series nodes is detected by the node. A reconnection relationship is established between nodes on either side of a node determined to be out of service. The permanent voice call connection is automatically re-established or reconnected using at least one alternate node. The permanent voice call of an embodiment is transmitted over a Frame Relay network in accordance with a standard comprising a Frame Relay Forum FRF.11 Implementation Agreement.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CISCO TECHNOLOGY, INC.SAN JOSE, CA13854

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Tasker, Michael Pleasanton, CA 11 159

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Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
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