Optical communications – Diagnostic testing – Fault detection
Reexamination Certificate
2003-08-05
2008-08-05
Sedighian, M. R. (Department: 2613)
Optical communications
Diagnostic testing
Fault detection
C398S003000, C398S012000, C398S059000, C398S067000, C398S072000
Reexamination Certificate
active
07409154
ABSTRACT:
An optical access network employs a ring topology in which connections between the network units and between the network units and the optical line terminal are via a protection switch. The protection switch monitors connections from the optical network units to detect a loss of signal and, on detecting a loss of signal from an optical network unit, switches the respective optical network unit out of the ring, thus maintaining continuity of the ring topology.
REFERENCES:
patent: 5592475 (1997-01-01), Gliga et al.
patent: 5903370 (1999-05-01), Johnson
patent: 6470032 (2002-10-01), Dudriak et al.
patent: 6771908 (2004-08-01), Eijk et al.
patent: 6798991 (2004-09-01), Davis et al.
patent: 7158720 (2007-01-01), Mazzurco et al.
IEEE Standards for Local Area Networks 802.5-1989 “Token Ring Access Method” published by The Institute of Electrical andElectronics Engineers Inc.
Fujimoto et al., “Broadband Subscriber Loop System Using Multi-Gigabit Intelligent Optical Shuttle Nodes”,Proceedings of the Global Telecommunications Conference and Exhibition(Globecom), Nov. 15-18, 1987, Tokyo, vol. 3, pp. 1449-1454.
Lucent Technologies - Inc.
Sedighian M. R.
LandOfFree
System and method for a protected optical access ring network does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for a protected optical access ring network, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for a protected optical access ring network will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4016010