The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 2009
Filed:
Nov. 30, 1999
Brian Lo Bue, Irvine, CA (US);
Darrell Myers Shively, Ii, Irvine, CA (US);
Larry Nadeau, Irvine, CA (US);
Brian Lo Bue, Irvine, CA (US);
Darrell Myers Shively, II, Irvine, CA (US);
Larry Nadeau, Irvine, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
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.