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Class Information
Number: 398/4
Name: Optical communications > Fault recovery > Bypass inoperative element > In a ring or loop > Using a secondary ring or loop
Description: Subject matter wherein the inoperative element is bypassed by using an auxiliary closed path transmission system.

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8634715 System and method for demand aggregation in optical networks employing shared ring protection Jan. 21, 2014
8606101 Optical channel intelligently shared protection ring Dec. 10, 2013
8553534 Protecting an ethernet network having a ring architecture Oct. 8, 2013
8532481 Dual fault tolerant optical networking with fast protection performance Sep. 10, 2013
8457488 Technology for providing telecommunication services to multiple optical communication lines Jun. 4, 2013
8456983 Method and system for arranging link resource fragments Jun. 4, 2013
8433190 Hot-swapping in-line optical amplifiers in an optical network Apr. 30, 2013
8433191 Optical channel intelligently shared protection ring Apr. 30, 2013
8417114 Apparatus, system and method for network monitoring Apr. 9, 2013
8391707 Maintenance friendly optical fiber switching system Mar. 5, 2013
8326143 Routing method of optical communication network node apparatus and optical communication network node apparatus Dec. 4, 2012
8320757 Method and device for starting up an optical transmission link Nov. 27, 2012
8280244 Optical ring network system Oct. 2, 2012
8218965 Optical failover routing Jul. 10, 2012
8204374 Reconfigurable multichannel (WDM) optical ring network with optical shared protection Jun. 19, 2012
8160441 Optical fiber access network and commuication protection method thereof Apr. 17, 2012
8103161 Method, device and system for group optical channel shared protection Jan. 24, 2012
8090256 Optical network architectures and optical communication schemes Jan. 3, 2012
8078051 Method and system for a secure bi-directional line switched ring Dec. 13, 2011
8018841 Interworking an ethernet ring network and an ethernet network with traffic engineered trunks Sep. 13, 2011
8019217 Storage system and optical module switching method for storage system Sep. 13, 2011
8005356 Video transmission system of a ring network Aug. 23, 2011
7991286 Optical transmission apparatus Aug. 2, 2011
7974185 Three fiber line switched ring Jul. 5, 2011
7970278 Flexible open ring optical network and method Jun. 28, 2011
7965938 Method for mesh optical network service restoration Jun. 21, 2011
7945157 Ship with a data network May. 17, 2011
7936990 Method and node apparatus for traffic protection in optical transport network May. 3, 2011
7881616 Transceiver based loop back initiation Feb. 1, 2011
7882370 Static pulsed bus circuit and method having dynamic power supply rail selection Feb. 1, 2011
7848642 Method and apparatus for capacity-efficient restoration in an optical communication system Dec. 7, 2010
7840133 Method and system for hybrid protection in optical networks Nov. 23, 2010
7805072 Wavelength division multiplex optical ring network for transmitting protected signals by local state switching following local interruption detection Sep. 28, 2010
7787763 System and method for protecting optical light-trails Aug. 31, 2010
7761006 Method for designing optical network, and computer readable medium Jul. 20, 2010
7751705 Optical channel intelligently shared protection ring Jul. 6, 2010
7738789 Radio base station with multiple radio frequency heads Jun. 15, 2010
7729613 Apparatus for optical path monitoring and an optical shutter for preventing signal transimission in a faulty optical path Jun. 1, 2010
7724654 Method for synchronized trunk failover and failback in a FC-AL switching environment May. 25, 2010
7715716 Methods and apparatus for optimizing utilization in reconfigurable optical add-drop mulitplexer based ring network May. 11, 2010
7711263 Fault protection system and method for passive optical network May. 4, 2010
7680032 Bidirectional line switched partial rings, mesh networks, and methods of operation Mar. 16, 2010
7664391 Method and system for shared optical regeneration Feb. 16, 2010
7660525 Methods and apparatus for optimizing utilization in a ring network Feb. 9, 2010
7660524 Temperature compensation for transmission between nodes coupled by a unidirectional fiber ring Feb. 9, 2010
7643751 Network managing apparatus, optical add/drop multiplexer, and network managing method Jan. 5, 2010
7633857 Node and method of setting backup path Dec. 15, 2009
7634194 Multi-channel protection switching systems and methods for increased reliability and reduced cost Dec. 15, 2009
7630296 System and method for remotely restoring inoperative data communications Dec. 8, 2009
7613392 1:N protection in an optical terminal Nov. 3, 2009

1 2 3 4

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