Data Portal @ linkeddatafragments.org

Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Synchronous_optical_networking> ?p ?o. }

• Synchronous_optical_networking abstract "Synchronous Optical Networking (SONET) and Synchronous Digital Hierarchy (SDH) are standardized protocols that transfer multiple digital bit streams over optical fiber using lasers or highly coherent light from light-emitting diodes (LEDs). At low transmission rates data can also be transferred via an electrical interface. The method was developed to replace the Plesiochronous Digital Hierarchy (PDH) system for transporting large amounts of telephone calls and data traffic over the same fiber without synchronization problems. SONET generic criteria are detailed in Telcordia Technologies Generic Requirements document GR-253-CORE. Generic criteria applicable to SONET and other transmission systems (e.g., asynchronous fiber optic systems or digital radio systems) are found in Telcordia GR-499-CORE.SONET and SDH, which are essentially the same, were originally designed to transport circuit mode communications (e.g., DS1, DS3) from a variety of different sources, but they were primarily designed to support real-time, uncompressed, circuit-switched voice encoded in PCM format. The primary difficulty in doing this prior to SONET/SDH was that the synchronization sources of these various circuits were different. This meant that each circuit was actually operating at a slightly different rate and with different phase. SONET/SDH allowed for the simultaneous transport of many different circuits of differing origin within a single framing protocol. SONET/SDH is not itself a communications protocol per se, but a transport protocol.Due to SONET/SDH's essential protocol neutrality and transport-oriented features, SONET/SDH was the obvious choice for transporting the fixed length Asynchronous Transfer Mode (ATM) frames also known as cells. It quickly evolved mapping structures and concatenated payload containers to transport ATM connections. In other words, for ATM (and eventually other protocols such as Ethernet), the internal complex structure previously used to transport circuit-oriented connections was removed and replaced with a large and concatenated frame (such as STS-3c) into which ATM cells, IP packets, or Ethernet frames are placed.Both SDH and SONET are widely used today: SONET in the United States and Canada, and SDH in the rest of the world. Although the SONET standards were developed before SDH, it is considered a variation of SDH because of SDH's greater worldwide market penetration.The SDH standard was originally defined by the European Telecommunications Standards Institute (ETSI), and is formalized as International Telecommunication Union (ITU) standards G.707, G.783, G.784, and G.803. The SONET standard was defined by Telcordia and American National Standards Institute (ANSI) standard T1.105.".
• Synchronous_optical_networking thumbnail SDH_Racks.jpg?width=300.
• Synchronous_optical_networking wikiPageExternalLink 21707.
• Synchronous_optical_networking wikiPageExternalLink hr20031114_esum.pdf.
• Synchronous_optical_networking wikiPageExternalLink docs.cgi?ID=SEARCH&DOCUMENT=GR-253&.
• Synchronous_optical_networking wikiPageExternalLink docs.cgi?ID=SEARCH&DOCUMENT=GR-499&.
• Synchronous_optical_networking wikiPageExternalLink RecordDetail.aspx?sku=ATIS-PP-0900119.01.2006.
• Synchronous_optical_networking wikiPageExternalLink RecordDetail.aspx?sku=T1.105-2001.
• Synchronous_optical_networking wikiPageExternalLink sifhom.htm.
• Synchronous_optical_networking wikiPageExternalLink sonet.
• Synchronous_optical_networking wikiPageExternalLink netspeeds.html.
• Synchronous_optical_networking wikiPageExternalLink T-REC-G.707.
• Synchronous_optical_networking wikiPageExternalLink T-REC-G.783.
• Synchronous_optical_networking wikiPageExternalLink T-REC-G.803.
• Synchronous_optical_networking wikiPageExternalLink sdh_pg_opt_tm_ae.pdf.
• Synchronous_optical_networking wikiPageExternalLink sonet_pg_opt_tm_ae.pdf.
• Synchronous_optical_networking wikiPageExternalLink SDH-SONET.html.
• Synchronous_optical_networking wikiPageExternalLink www.sonet.com.
• Synchronous_optical_networking wikiPageID "38536".
• Synchronous_optical_networking wikiPageRevisionID "605216911".
• Synchronous_optical_networking hasPhotoCollection Synchronous_optical_networking.
• Synchronous_optical_networking subject Category:Fiber-optic_communications.
• Synchronous_optical_networking subject Category:Network_protocols.
• Synchronous_optical_networking subject Category:Synchronous_optical_networking.
• Synchronous_optical_networking type Abstraction100002137.
• Synchronous_optical_networking type Communication100033020.
• Synchronous_optical_networking type Direction106786629.
• Synchronous_optical_networking type Message106598915.
• Synchronous_optical_networking type NetworkProtocols.
• Synchronous_optical_networking type Protocol106665108.
• Synchronous_optical_networking type Rule106652242.
• Synchronous_optical_networking comment "Synchronous Optical Networking (SONET) and Synchronous Digital Hierarchy (SDH) are standardized protocols that transfer multiple digital bit streams over optical fiber using lasers or highly coherent light from light-emitting diodes (LEDs). At low transmission rates data can also be transferred via an electrical interface.".
• Synchronous_optical_networking label "Rede ótica síncrona".
• Synchronous_optical_networking label "SONET".
• Synchronous_optical_networking label "SONET".
• Synchronous_optical_networking label "SONET".
• Synchronous_optical_networking label "Synchroniczna sieć optyczna".
• Synchronous_optical_networking label "Synchronous Optical Network".
• Synchronous_optical_networking label "Synchronous Optical Network".
• Synchronous_optical_networking label "Synchronous Optical Network".
• Synchronous_optical_networking label "Synchronous optical networking".
• Synchronous_optical_networking label "同步光网络".
• Synchronous_optical_networking sameAs SONET.
• Synchronous_optical_networking sameAs Synchronous_Optical_Network.
• Synchronous_optical_networking sameAs SONET.
• Synchronous_optical_networking sameAs Synchronous_Optical_Network.
• Synchronous_optical_networking sameAs SONET.
• Synchronous_optical_networking sameAs Synchronous_Optical_Network.
• Synchronous_optical_networking sameAs SONET.
• Synchronous_optical_networking sameAs Synchroniczna_sieć_optyczna.
• Synchronous_optical_networking sameAs Rede_ótica_síncrona.
• Synchronous_optical_networking sameAs m.09llg.
• Synchronous_optical_networking sameAs Q51823.
• Synchronous_optical_networking sameAs Q51823.
• Synchronous_optical_networking sameAs Synchronous_optical_networking.
• Synchronous_optical_networking wasDerivedFrom Synchronous_optical_networking?oldid=605216911.
• Synchronous_optical_networking depiction SDH_Racks.jpg.
• Synchronous_optical_networking isPrimaryTopicOf Synchronous_optical_networking.