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Statements

Subject Item: dbr:Bay_of_Bengal_Gateway
dbo:wikiPageWikiLink: dbr:Submarine_branching_unit

Subject Item: dbr:West_Africa_Cable_System
dbo:wikiPageWikiLink: dbr:Submarine_branching_unit

Subject Item: dbr:Minerva_(cable_system)
dbo:wikiPageWikiLink: dbr:Submarine_branching_unit

Subject Item: dbr:Cable_landing_point
dbo:wikiPageWikiLink: dbr:Submarine_branching_unit

Subject Item: dbr:Submarine_communications_cable
dbo:wikiPageWikiLink: dbr:Submarine_branching_unit

Subject Item: dbr:Submarine_branching_unit
rdf:type: yago:Cable106275095 dbo:MusicalWork yago:WikicatSubmarineCommunicationsCables yago:Abstraction100002137 yago:Communication100033020 yago:Telegram106622709 yago:Message106253690
rdfs:label: Submarine branching unit
rdfs:comment: A submarine branching unit is a piece of equipment used in submarine telecommunications cable systems to allow the cable to split to serve more than one destination. For example, one branch might head for a cable landing point and others may continue. There are several methods by which the split can be affected, which can also depend on the type of cable system: In both types of cable system, more than one technique can be used simultaneously.
dcterms:subject: dbc:Submarine_communications_cables
dbo:wikiPageID: 3970376
dbo:wikiPageRevisionID: 1044716005
dbo:wikiPageWikiLink: dbr:Festoon_cable dbr:Equilateral_triangle dbr:Cable_landing_point dbr:Reconfigurable_optical_add-drop_multiplexer dbr:Add-drop_multiplexer dbr:Submarine_communications_cable dbc:Submarine_communications_cables
dbo:wikiPageExternalLink: n14:bu.pdf
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dbp:wikiPageUsesTemplate: dbt:Cite_web dbt:Dead_link dbt:Reflist
dbp:bot: InternetArchiveBot
dbp:date: June 2018
dbp:fixAttempted: no
dbo:abstract: A submarine branching unit is a piece of equipment used in submarine telecommunications cable systems to allow the cable to split to serve more than one destination. For example, one branch might head for a cable landing point and others may continue. There are several methods by which the split can be affected, which can also depend on the type of cable system: * Purely electrical systems (now almost obsolete) can be split by either: * Physically separating the signal cables so some go in one direction and some in another, which requires no additional power. * Using an add-drop multiplexer to direct the signals down one path or the other. The electrical equipment that acts as the add-drop multiplexer will need powering. * Optical fibre cable systems can be split by either: * Physically separating the signal-carrying fibres so some go in one direction and some in another, which requires no additional power. * Converting the optically carried signals to electrical signals, using an add-drop multiplexer to divide and recombine the signals on the desired paths, the reconverting back to optically carried signals. This signal conversion and multiplexing equipment will require power. * Using a reconfigurable optical add-drop multiplexer to direct optical carrier frequencies down desired paths. The power requirements of optical multiplexing in this manner will be lower than the previous method. In both types of cable system, more than one technique can be used simultaneously. The conventional symbol used for a submarine branching unit in maps of cable routes is a small equilateral triangle with (usually) one vertex pointing towards the top of the map.
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prov:wasDerivedFrom: wikipedia-en:Submarine_branching_unit?oldid=1044716005&ns=0
dbo:wikiPageLength: 2674
foaf:isPrimaryTopicOf: wikipedia-en:Submarine_branching_unit

Subject Item: dbr:Submarine_Branching_Unit
dbo:wikiPageWikiLink: dbr:Submarine_branching_unit
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Subject Item: dbr:Branching_unit
dbo:wikiPageWikiLink: dbr:Submarine_branching_unit
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Subject Item: wikipedia-en:Submarine_branching_unit
foaf:primaryTopic: dbr:Submarine_branching_unit