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optical transport network wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 comparing otn and sonet sdh 2 standards 3 equipment toggle equipment subsection 3 1 switch fabric 3 2 fec latency 4 see also 5 references 6 external links toggle the table of contents optical transport network 9 languages azərbaycanca deutsch español فارسی suomi italiano português русский türkçe edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia redirected from optical transport network standard for optical data packages function diagram 200 gbit s transponder muxponder aggregating 4x40 gbit s and 4x10 gbit s into a single 200 gbit s otu2c standard otn trunk an optical transport network otn is a digital wrapper that encapsulates frames of data to allow multiple data sources to be sent on the same channel this creates an optical virtual private network for each client signal itu t defines an optical transport network as a set of optical network elements one connected by optical fiber links able to provide functionality of transport multiplexing switching management supervision and survivability of optical channels carrying client signals 1 an one may re time re amplify re shape 3r but it does not have to be 3r it can be purely photonic unless connected by optical fibre links it shall not be otn mere functionality of switching management supervision shall not make it otn unless the signals are carried through optical fibre unlike sonet sdh otn provides a mechanism to manage multiplexed wavelengths in a dwdm system 2 comparing otn and sonet sdh edit otn sonet sdh scaling 400gbit s 2021 3 40gbit s error correcting yes forward error correction 64b 66b encoding 512b 513b encoding 1024b 1027b encoding yes forward error correction bch code timing does not require requires octet based block frame structure fixed 16300 byte variable 2430 622 080 byte frame rate variable 98 354 1 163 μs 125 μs standards edit otn multiplexing and mapping structures show the relationship between odu clients odu odu groups and otu otn was designed to provide higher throughput currently 400g than its predecessor sonet sdh which stops at 40 gbit s per channel itu t recommendation g 709 is commonly called optical transport network otn also called digital wrapper technology or optical channel wrapper as of december 2009 otn has standardized the following line rates signal marketing data rate gbit s true signal rate otu gbit s applications maximum number of signals per channel of odu0 1 2g of odu1 2 5g of odu2 10g of odu2e 10 4g of odu25 26 4g of odu3 40 3g of odu50 52 8g of odu4 104g otu1 2 5 2 66 transports sonet oc 48 or synchronous digital hierarchy sdh stm 16 signal 2 1 0 0 0 0 0 0 otu2 10 10 7 transports an oc 192 stm 64 or wide area network wan physical layer phy for 10 gigabit ethernet 10gbase w 8 4 1 0 0 0 0 0 otu2e 4 10 5 11 1 transports a 10 gigabit ethernet local area network lan phy coming from ip ethernet switches and routers at full line rate 10 3 gbit s this is specified in g sup43 8 4 1 1 0 0 0 0 otu25 25 26 4 transports a 25 gigabit ethernet signal 20 10 2 2 1 0 0 0 otu3 40 43 transports an oc 768 or stm 256 signal or a 40 gigabit ethernet signal 5 32 16 4 3 1 1 0 0 otu3e1 2 6 41 44 5 develop for transport of 10g lan phy and one for 10g wan phy over sdh and otn 32 16 4 3 1 1 0 0 otu50 50 52 8 transports a 50 gigabit ethernet signal 40 20 5 5 2 1 1 0 otu4 100 111 8 transports a 100 gigabit ethernet signal 80 40 10 10 2 2 2 1 otucn n x 100 n x 105 2 n instances of a logically interleaved 100g c 100 frame format total bandwidth odu size e g 200g channel support 4xodu3 and 4xodu2 7 the otuk k 1 2 2e 3 3e2 4 is an information structure into which another information structure called oduk k 1 2 2e 3 3e2 4 is mapped the oduk signal is the server layer signal for client signals the following oduk information structures are defined in itu t recommendation g 709 signal data rate gbit s typical applications odu0 1 24416 transport of a timing transparent transcoded compressed 1000base x signal 8 or a stream of packets such as ethernet mpls or ip using generic framing procedure odu1 2 49877512605042 transport of two odu0 signals or a sts 48 stm 16 signal or a stream of packets such as ethernet mpls or ip using generic framing procedure odu2 10 0372739240506 transport of up to eight odu0 signals or up to four odu1 signals or a sts 192 stm 64 signal or a wan phy 10gbase w or a stream of packets such as ethernet mpls or ip using generic framing procedure odu2e 10 3995253164557 transport of a 10 gigabit ethernet signal or a timing transparent transcoded compressed fibre channel 10gfc signal odu3 40 3192189830509 transport of up to 32 odu0 signals or up to 16 odu1 signals or up to four odu2 signals or a sts 768 stm 256 signal or a timing transparent transcoded 40 gigabit ethernet signal or a stream of packets such as ethernet mpls or ip using generic framing procedure odu3e2 41 7859685595012 transport of up to four odu2e signals odu4 104 794445814978 transport of up to 80 odu0 signals or up to 40 odu1 signals or up to ten odu2 signals or up to two odu3 signals or a 100 gigabit ethernet signal oduflex cbr 239 238 x client bit rate 8 transport of a constant bitrate signal such as fibre channel 8gfc infiniband or common public radio interface oduflex gfp any configured rate 8 transport of a stream of packets such as ethernet mpls or ip using generic framing procedure equipment edit at a very high level the typical signals processed by otn equipment at the optical channel layer are sonet sdh ethernet fibrechannel packets otn a few of the key functions performed on these signals are protocol processing of all the signals mapping and de mapping of non otn signals into and out of otn signals multiplexing and de multiplexing of otn signals forward error correction fec on otn signals packet processing in conjunction with mapping de mapping of packet into and out of otn signals switch fabric edit the otn signals at all data rates have the same frame structure but the frame period reduces as the data rate increases as a result the time slot interchange tsi technique of implementing sonet sdh switch fabrics is not directly applicable to otn switch fabrics otn switch fabrics are typically implemented using packet switch fabrics fec latency edit on a point to point otn link there is latency due to forward error correction fec processing hamming distance of the rs 255 239 code is 17 see also edit g 709 references edit itu t otn definitions g 709 the optical transport network white paper pdf viavi solutions inc 2021 retrieved 10 january 2024 the aim of the optical transport network otn is to combine the benefits of sonet sdh technology with the bandwidth expandability of dwdm g 709 interfaces for the optical transport network g sup43 transport of ieee 10gbase r in optical transport networks otn www itu int retrieved 31 october 2021 otn offers transparent service delivery archived 2008 05 10 at the wayback machine retrieved june 2 2007 itu t g suppl 43 02 2011 itu retrieved 31 october 2021 200g otn optical transponder muxponder for dci network fs com retrieved 31 october 2021 1 2 3 odu0 and oduflex a future proof solution for otn client mapping pdf tpack a s february 2010 archived from the original pdf on 12 march 2012 external links edit anritsu poster details of all otn areas including breakdown of the full frame dead link anritsu poster details of all otn areas including breakdown of the full frame at the wayback machine archived 2014 05 17 optical transport network otn tutorial itu t only covers g 709 2003 03 hot topics in optical transport networks steve trowbridge nokia chairman itu t study group 15 v t e optical telecommunication basic smoke signal beacon hydraulic telegraph ships flags optical telegraph heliograph signal lamp photophone advanced fiber optics optical fiber cable connectors optical wireless free space visible light li fi in space consumer ir optical transport network technologies oc rates intensity modulation modulating retro reflector category portal v t e telecommunications history beacon broadcasting cable protection system cable tv communications satellite computer network data compression audio dct image video digital media internet video online video platform social media streaming drums edholm s law electrical telegraph fax heliographs hydraulic telegraph information age information revolution internet mass media mobile phone smartphone optical telecommunication optical telegraphy pager photophone prepaid mobile phone radio radiotelephone satellite communications semaphore phryctoria semiconductor device mosfet transistor smoke signals telecommunications history telautograph telegraphy teleprinter teletype telephone history the telephone cases television digital streaming undersea telegraph line videotelephony whistled language wireless revolution pioneers nasir ahmed edwin howard armstrong mohamed m atalla john logie baird paul baran john bardeen alexander graham bell emile berliner tim berners lee francis blake jagadish chandra bose charles bourseul walter houser brattain vint cerf claude chappe yogen dalal donald davies daniel davis jr amos dolbear thomas edison philo farnsworth reginald fessenden lee de forest elisha gray oliver heaviside robert hooke erna schneider hoover harold hopkins gardiner greene hubbard bob kahn dawon kahng charles k kao narinder singh kapany hedy lamarr roberto landell innocenzo manzetti guglielmo marconi robert metcalfe antonio meucci samuel morse jun ichi nishizawa charles grafton page radia perlman alexander stepanovich popov tivadar puskás johann philipp reis claude shannon almon brown strowger henry sutton charles sumner tainter nikola tesla camille tissot alfred vail thomas a watson charles wheatstone vladimir k zworykin internet pioneers transmission media coaxial cable fiber optic communication optical fiber free space optical communication internet molecular communication radio waves wireless transmission line telecommunication circuit network topology and switching bandwidth links network switching circuit packet list nodes terminal telephone exchange multiplexing space division frequency division time division polarization division orbital angular momentum code division concepts communication protocol computer network data transmission store and forward telecommunications equipment types of network cellular network ethernet isdn lan mobile ngn public switched telephone radio television telex uucp wan wireless network notable networks arpanet bitnet cyclades fidonet internet internet2 janet npl network tanet toasternet usenet locations africa americas north south antarctica asia europe oceania global telecommunications regulation bodies telecommunication portal category outline commons retrieved from https en wikipedia org w index php title optical_transport_network oldid 1360692336 categories optical transport network itu t recommendations hidden categories articles with short description short description is different from wikidata webarchive template wayback links all articles with dead external links articles with dead external links from september 2024 this page was last edited on 23 june 2026 at 01 08 utc page was rendered with parsoid text is available under the creative commons attribution 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