Nrog rau kev tawg ntawm cov tsheb thauj mus los digital thiab kev loj hlob ntawm kev siv bandwidth- tshaib plab, Optical Transport Network (OTN) hloov zuj zus los ntawm qhov taw tes-rau-point DWDM cov kev kho rau scalable thiab robust optical networking daim ntawv thov uas cater rau ib tug ntau yam ntawm cov neeg siv cov cim nrog. sib npaug-varied kev xav tau kev pab. Cov neeg nqa khoom tseem tab tom tso ib qho tshwj xeeb rau OTN hauv cheeb tsam Metro, qhov twg nws tau hloov pauv sai ntawm SONET / SDH mus rau Wavelength Division Multiplexing (WDM). Nrog lub hom phiaj ntawm kev txhawb nqa bandwidth thiab nce kev ua haujlwm hauv lub network, OTN muab txoj hauv kev los txhawb cov tsheb sib txawv ntawm tus nqi zoo dua li siv SONET / SDH tes hauj lwm.
OTN Network yog dab tsi?
Txhais los ntawm ITU Telecommunication Standardization Sector (ITU-T), OTN yog digital wrapper thev naus laus zis uas muab txoj hauv kev tau txais txiaj ntsig zoo thiab thoob ntiaj teb rau ntau yam kev pabcuam sib txawv mus rau txoj hauv kev kho qhov muag. OTN thev naus laus zis lossis digital wrapper thev naus laus zis muab lub luag haujlwm thoob plaws hauv lub network uas ntxiv SONET / SDH zoo li cov khoom siv rau WDM. Nws tsim cov pob tshab, hierarchical network tsim los siv rau ob qho tib si WDM thiab TDM. (Ntau cov ntaub ntawv hais txog WDM thiab TDM systems muaj nyob rau hauv Optical Wavelength Bands Evolution.)
OTN koom ua ke ua haujlwm ntawm kev thauj mus los, kev sib txuas, kev sib txuas, kev tswj hwm, thiab kev saib xyuas, thiab tsim OTN tus neeg siv khoom (xws li SONET / SDH, IP, ATM) kev sib txuas hauv Metro thiab Core networks. Niaj hnub no, nws tau dav siv nyob rau hauv metro, cheeb tsam, thiab ntev-ntev DWDM pob ntawv-kho qhov muag thauj network.
