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:
Mar. 30, 2010
Filed:
Jul. 10, 2007
Pierre Peloso, Marcoussis, FR;
Emmanuel Dotaro, Verrieres le Buisson, FR;
Pierre Peloso, Marcoussis, FR;
Emmanuel Dotaro, Verrieres le Buisson, FR;
Alcatel Lucent, Paris, FR;
Abstract
An optical connection path surveillance device for a transparent optical network includes analysis means () adapted to detect node signatures carried by an optical signal in transit at a point of said network, each node signature including information uniquely associated with a switching node of the network. The analysis means include calculation means () adapted to determine a number of hops from said detected node signatures and error detection means () adapted to compare said number of hops to a predetermined threshold in order to detect a routing error in relation to said optical signal if said threshold is exceeded. In one embodiment, a surveillance device detects looped paths on the basis of the detected node signatures.