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:
Jul. 17, 2007
Filed:
Jun. 07, 2001
Kim B. Roberts, Nepean, CA;
Dino B. Fatica, Nepean, CA;
Kim B. Roberts, Nepean, CA;
Dino B. Fatica, Nepean, CA;
Nortel Networks Limited, St. Laurent, QC, CA;
Abstract
A network node includes a system enabling high-speed protection switching of traffic between respectively associated working and protection channels of a communications network. The node comprises a multi-stage switch fabric, an interface, and a toggle. The multi-stage switch fabric has a first stage including a respective plurality of stage-switch elements. The interface is operatively coupled to a set of one or more stage-switch elements, and is adapted to aggregate the working and protection channels of the communications network on a selected one of the set of stage-switch elements. Finally, the toggle is adapted to control the selected stage-switch element to map traffic between a middle stage of the switch fabric and a selected one of the working and protection channels.