Active call context reconstruction for primary/backup resource manager servers
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United States of America Patent
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Apr 28, 2009
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N/A
app pub date -
Nov 30, 1999
filing date -
Nov 30, 1999
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Abstract
A method and apparatus for network server recovery maintains an ongoing call by reconstructing its call context from a server-state attribute (SSA) that is generated by a first server, recorded in separate storage and retrieved by a second server in the event that a connection to the first server is interrupted. The SSA encodes call data that can be used to enable a server to maintain the call. The separate storage is preferably associated with a network access server (NAS) that does not itself use the SSA.
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