Optical communications – Diagnostic testing – Fault detection
Reexamination Certificate
2006-07-24
2010-12-07
Sedighian, M. R. (Department: 2613)
Optical communications
Diagnostic testing
Fault detection
C398S012000, C398S005000
Reexamination Certificate
active
07848646
ABSTRACT:
Normality of links on a spare path or the links and nodes is monitored. When the spare path cannot be used, at least any one of nodes at both ends in a segmented path section is changed to another node on a working path. The segmented path section is changed to set another spare path. When a fault monitoring section which can accumulatively detect abnormal information is changed to the changed partial working path section, alarm generation in the fault monitoring section is prevented to release the prevention after completion of the change.
REFERENCES:
patent: 6735392 (2004-05-01), Elahmadi et al.
patent: 6862380 (2005-03-01), Chaudhuri et al.
patent: 7289728 (2007-10-01), Wang et al.
patent: 7302177 (2007-11-01), Moriyama
patent: 7340163 (2008-03-01), Hardee
patent: 7424220 (2008-09-01), Miyazaki
patent: 2641926 (2004-09-01), None
patent: 2003-218912 (2003-07-01), None
patent: 2003-258851 (2003-09-01), None
patent: 2003-258851 (2003-12-01), None
patent: 2005-027144 (2005-01-01), None
L. Berger, “Generalized Multi-Protocol Label switching (GMPLS) Signaling Functional Description”, Jan. 2003, IETF.
P. Ashwood-Smith et al., “Generalized Multi-Protocol Label switching (GMPLS) Signaling Constraint-based Routed Label Distribution Protocol 9CD-LDP) Extensions”, Jan. 2003, IETF.
L. Berger, “Generalized Multi-Protocol Label switching (GMPLS) Signaling Resource Reservation Protocol-Traffic Engineering (RSVP-TE) Extensions”, Jan. 2003, IETF.
Itu, “Interfaces for the Optical Transport Network (OTN)”, Itu-t, g.709/y.1331, Mar. 2003.
Chinese Office Action dated Sep. 25, 2009; 4 pages.
Japanese Office Action dated May 18, 2010 for Application No. 2005-213728.
Fukashiro Yasuyuki
Hirai Tooru
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Sedighian M. R.
LandOfFree
Optical, network, node apparatus and method for recovery... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical, network, node apparatus and method for recovery..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical, network, node apparatus and method for recovery... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4215848