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:
Sep. 24, 2002
Filed:
Dec. 21, 1998
David Whiting, Nepean, CA;
Greg Wilbur, Ottawa, CA;
Nevein Sultan, Ottawa, CA;
Richard K. Mayer, Nepean, CA;
Nortel Networks Limited, St. Laurent, CA;
Abstract
In a data communications network in which virtual circuits and encapsulated virtual circuits may be established to carry calls from source terminals to destination terminals through network interfaces, information describing each virtual circuit is returned to, and stored at, the source. Should a virtual circuit or an encapsulated virtual circuit be interrupted, the destination holds the call open while the source requests reestablishment of the virtual circuit or encapsulated virtual circuit, by providing the stored description thereof through an alternate network interface. Upon reestablishment of the virtual circuit or encapsulated virtual circuit, the call proceeds with, or without, loss of data.