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Class Information
Number: 398/2
Name: Optical communications > Fault recovery > Bypass inoperative element
Description: Subject matter including a provision for alternate routing when the network or its component is at fault.

Sub-classes under this class:

Class Number Class Name Patents
398/3 In a ring or loop 194
398/5 Spare channel or standby optical fiber 391

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8687956 Standby restoration signaling for optical networks Apr. 1, 2014
8682157 Optical communication system, optical receiving terminal, and optical signal fault detection method Mar. 25, 2014
8666242 Response to OTUk-BDI for OTN interfaces to restore bidirectional communications Mar. 4, 2014
8638683 Frame signal generating method and frame signal generating device Jan. 28, 2014
8620154 Methods and apparatus for fast and energy-efficient light recovery in a visible light communication (VLC) system Dec. 31, 2013
8606099 Method and system for protecting integrated optoelectronic devices Dec. 10, 2013
8606100 WDM-TDM PON remote terminal and WDM-TDM PON link protection system Dec. 10, 2013
8600228 Optical communication Dec. 3, 2013
8559773 Coupling multiple conductor undersea optical cables to an undersea device with an isolated bypass conductive path across the undersea device Oct. 15, 2013
8559812 Methods and systems for the hierarchical mesh restoration of connections in an automatically switched optical network Oct. 15, 2013
8553531 Method and system for implementing network element-level redundancy Oct. 8, 2013
8553534 Protecting an ethernet network having a ring architecture Oct. 8, 2013
8554080 Failsafe optical splitter and method to isolate faults in a passive optical network Oct. 8, 2013
8547828 Method and system for implementing network element-level redundancy Oct. 1, 2013
8538261 Immediate protection scheme for passive optical network Sep. 17, 2013
8538256 Fast protection scheme for passive optical network Sep. 17, 2013
8532481 Dual fault tolerant optical networking with fast protection performance Sep. 10, 2013
8488445 Gateway device, optical network terminal, and passive optical network system Jul. 16, 2013
8457488 Technology for providing telecommunication services to multiple optical communication lines Jun. 4, 2013
8433189 Linear protection method of the optical network Apr. 30, 2013
8433190 Hot-swapping in-line optical amplifiers in an optical network Apr. 30, 2013
8428456 Passive optical network protection method, switchover control device, and passive optical network protection system Apr. 23, 2013
8412038 Optical transmission device, optical transmission system including the same, and optical transmission method Apr. 2, 2013
8401382 Passive optical network protection method, switchover control device, and passive optical network protection system Mar. 19, 2013
8401392 Flexible branching unit and system including the same Mar. 19, 2013
8391707 Maintenance friendly optical fiber switching system Mar. 5, 2013
8385745 Method and apparatus for transmitting/receiving signals in a microwave system Feb. 26, 2013
8358929 Network protection switching mechanisms and methods of network protection Jan. 22, 2013
8355632 Transmission apparatus Jan. 15, 2013
8320757 Method and device for starting up an optical transmission link Nov. 27, 2012
8315159 Utilizing optical bypass links in a communication network Nov. 20, 2012
8301026 Network restoration under dual failures using path protecting preconfigured cycles Oct. 30, 2012
8295161 Network apparatus that determines whether data is written into buffer based on detection of a memory error Oct. 23, 2012
8295160 Data communication system, device and method of detecting a failure on an access line in a network Oct. 23, 2012
8280243 Optical communication transmission system and method for checking performance of optical communication transmission system Oct. 2, 2012
8266220 Email management and rendering Sep. 11, 2012
8244123 System and method for optical transmission Aug. 14, 2012
8229297 Provision of alternative communications paths in a communications network Jul. 24, 2012
8229296 Method and apparatus for channel protection switching of optical network device Jul. 24, 2012
8218965 Optical failover routing Jul. 10, 2012
8218968 System and method for discovering neighboring nodes Jul. 10, 2012
8213792 Automatic ONT self disabling system, method, and computer readable medium Jul. 3, 2012
8208370 Method and system for fast link failover Jun. 26, 2012
8200792 Desktop secure video teleconferencing Jun. 12, 2012
8160441 Optical fiber access network and commuication protection method thereof Apr. 17, 2012
8155515 Method and apparatus for sharing common capacity and using different schemes for restoring telecommunications networks Apr. 10, 2012
8155516 Apparatus and method for ensuring continuity of fiber optic Apr. 10, 2012
8150257 Shared mesh restoration with pre-configured standby lightpaths Apr. 3, 2012
8139936 Method and apparatus of routing convergence in control plane of an intelligent optical network Mar. 20, 2012
8126330 Dynamic wavelength service over a ROADM optical network Feb. 28, 2012

1 2 3 4

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