SONET (Synchronous Optical Network)
SONET yog tus qauv kev sib txuas lus ceev ceev hauv Tebchaws Meskas. Nws siv fiber ntau optical raws li qhov nruab nrab kis tau tus mob cov ntaub ntawv nyob rau hauv ib lub nplhaib los yog taw tes-to-point layout. Ntawm nws cov tub ntxhais, nws synchronizes cov ntaub ntawv ntws kom cov teeb liab los ntawm ntau qhov chaw tuaj yeem ua ntau yam yam tsis muaj ncua sij hawm ntawm txoj kev teeb liab siab ceev. SONET yog sawv cev los ntawm OC (optical carrier) qib, xws li OC-3, OC-12, OC-48, thiab lwm yam, qhov twg cov lej sawv cev ntau ntawm chav tsev hauv paus OC-1 (51.84 Mbps). SONET architecture yog tsim los nrog kev tiv thaiv muaj zog thiab muaj peev xwm rov qab los ntawm tus kheej, yog li nws feem ntau siv hauv cov pob txha caj qaum.
SDH (Synchronous Digital Hierarchy)
SDH yog qhov sib npaug thoob ntiaj teb ntawm SONET, feem ntau yog siv hauv Tebchaws Europe thiab lwm thaj chaw tsis yog Asmeskas. SDH siv STM (Synchronous Transport Module) qib los txheeb xyuas qhov sib txawv ntawm kev sib kis ceev, xws li STM-1, STM-4, STM-16, thiab lwm yam, qhov twg STM-1 sib npaug rau 155.52 Mbps. SDH thiab SONET muaj kev sib cuam tshuam hauv ntau cov ntsiab lus, tab sis SDH muab kev yooj yim dua, xws li tso cai rau cov teeb liab los ntawm ntau qhov chaw sib txawv kom yooj yim dua rau hauv ib qho fiber ntau optical.
DWDM (Dense Wavelength Division Multiplexing)
DWDM yog fiber ntau optic network kis tau tus mob thev naus laus zis uas nce bandwidth los ntawm kev xa tawm ntau lub teeb liab ntawm qhov sib txawv wavelengths ib txhij ntawm tib lub fiber ntau optical. DWDM systems muaj peev xwm nqa tau ntau tshaj 100 lub teeb liab ntawm qhov sib txawv wavelengths, txhua tus tuaj yeem suav tau tias yog ib qho kev ywj pheej channel, thiab txhua lub channel tuaj yeem xa tawm ntawm tus nqi sib txawv thiab cov ntaub ntawv. Daim ntawv thov ntawm DWDM tso cai rau cov neeg ua haujlwm hauv lub network kom nthuav dav lub peev xwm hauv lub network yam tsis tau tso cov khoom siv kho qhov muag tshiab, uas yog qhov tseem ceeb heev rau cov ntaub ntawv kev pabcuam kev lag luam nrog kev loj hlob ntawm kev thov.
Qhov sib txawv ntawm peb
Txawm hais tias peb lub thev naus laus zis zoo sib xws hauv lub tswv yim, lawv tseem sib txawv hauv kev siv tiag tiag:
Cov txheej txheem kev kawm: SONET thiab SDH yog ob qho tib si cov qauv kev tshaj lij. SONET feem ntau yog siv hauv North America, thaum SDH feem ntau siv hauv lwm thaj chaw. DWDM yog lub wavelength multiplexing thev naus laus zis uas yog siv rau kev sib kis ntawm ntau lub cim sib luag es tsis yog cov qauv ntaub ntawv.
Cov ntaub ntawv tus nqi: SONET thiab SDH txhais cov ntu ntu rau cov ntaub ntawv xa mus los ntawm cov qib tshwj xeeb lossis cov qauv, thaum DWDM tsom ntau ntxiv rau kev nce cov ntaub ntawv xa mus tag nrho los ntawm kev ntxiv cov kev sib kis hauv tib lub fiber ntau optical.
Flexibility thiab scalability: SDH muab kev hloov pauv ntau dua li SONET, ua kom yooj yim rau kev sib txuas lus thoob ntiaj teb, thaum DWDM thev naus laus zis muab kev hloov pauv tau zoo thiab muaj peev xwm loj hauv cov ntaub ntawv tus nqi thiab kev siv spectrum, tso cai rau lub network nthuav dav raws li qhov xav tau loj hlob.
Daim ntawv thov thaj chaw: SONET thiab SDH feem ntau yog siv los tsim cov pob txha caj qaum thiab lawv cov kev tiv thaiv thiab kev rov qab los ntawm tus kheej, thaum DWDM yog ib qho kev daws teeb meem rau kev sib kis mus ntev thiab ultra-ntev-ntev optical network, siv rau kev sib txuas ntawm cov chaw zov me nyuam lossis thoob plaws hauv lub nkoj. cable systems, thiab lwm yam.
Hauv cov ntsiab lus, SONET, SDH thiab DWDM yog cov thev naus laus zis tseem ceeb rau kev tsim cov kev sib txuas lus kho qhov muag niaj hnub thiab yav tom ntej, thiab txhua lub thev naus laus zis muaj nws tus kheej tshwj xeeb daim ntawv thov scenarios thiab kev zoo. Los ntawm kev xaiv thiab siv cov thev naus laus zis sib txawv no, cov neeg ua haujlwm hauv lub network tuaj yeem tsim kom muaj txiaj ntsig zoo, txhim khu kev qha thiab cov ntaub ntawv xa mus ceev ceev thoob ntiaj teb.
Peb yuav coj peb cov khoom DWDM thiab DCI BOX tuaj koom Africa Tech Festival, cov ntsiab lus raws li hauv qab no:
Booth NO. yog D91A,
Hnub tim: Kaum Ib Hlis 12-14, 2024.
Ntxiv: Cape Town International Convention Center (CTICC)
Cia siab tias yuav pom koj nyob ntawd!
Post lub sij hawm: Nov-06-2024