I-SONET (Inethiwekhi ye-Optical ehambelanayo)
I-SONET ngumgangatho wothumelo lwenethiwekhi oluhamba ngesantya esiphezulu eMelika. Isebenzisa i-optical fiber njengendlela yothumelo ukudlulisa ulwazi lwedijithali kwisangqa okanye ulwakhiwo lwe-point-to-point. Embindini wayo, ivumelanisa ukuhamba kolwazi ukuze imiqondiso evela kwimithombo eyahlukeneyo ikwazi ukuphindaphindwa ngaphandle kokulibazisa kwindlela yesignali eqhelekileyo ehamba ngesantya esiphezulu. I-SONET imelwe ngamanqanaba e-OC (optical carrier), afana ne-OC-3, OC-12, OC-48, njl., apho amanani amele ukuphindaphinda kweyunithi esisiseko ye-OC-1 (51.84 Mbps). Uyilo lwe-SONET luyilwe ngokhuseleko oluqinileyo kunye nokukwazi ukuzibuyisela, ngoko ke lusetyenziswa rhoqo kwiinethiwekhi zomqolo.
I-SDH (Ulawulo lweDijithali oluhambelanayo)
I-SDH ngokusisiseko lixabiso elilingana ne-SONET kwihlabathi liphela, elisetyenziswa kakhulu eYurophu nakwezinye iindawo ezingezizo zase-US. I-SDH isebenzisa amanqanaba e-STM (i-Synchronous Transport Module) ukuchonga isantya sokudlulisa esahlukileyo, njenge-STM-1, i-STM-4, i-STM-16, njl.njl., apho i-STM-1 ilingana ne-155.52 Mbps. I-SDH kunye ne-SONET ziyasebenzisana kwiinkcukacha ezininzi zobugcisa, kodwa i-SDH ibonelela ngokuguquguquka okungakumbi, njengokuvumela imiqondiso evela kwimithombo eyahlukeneyo ukuba idityaniswe ngokulula kwi-fiber enye ye-optical.
I-DWDM (i-Dense Wavelength Division Multiplexing)
I-DWDM yiteknoloji yokudlulisa inethiwekhi ye-fiber optic eyonyusa i-bandwidth ngokudlulisa imiqondiso emininzi ye-optical yee-wavelengths ezahlukeneyo ngaxeshanye kwi-optical fiber efanayo. Iinkqubo ze-DWDM zinokuthwala imiqondiso engaphezulu kwe-100 yee-wavelengths ezahlukeneyo, nganye inokuthathwa njengetshaneli ezimeleyo, kwaye itshaneli nganye inokudlulisa ngamanani ahlukeneyo kunye neentlobo zedatha. Ukusetyenziswa kwe-DWDM kuvumela abaqhubi benethiwekhi ukuba bandise kakhulu umthamo wenethiwekhi ngaphandle kokubeka iintambo ezintsha ze-optical, nto leyo ebaluleke kakhulu kwimarike yenkonzo yedatha ngokukhula okukhulu kwemfuno.
Umahluko phakathi kwaba bathathu
Nangona ezi teknoloji zintathu zifana ngokwengqiqo, zisahlukile kwindlela ezisetyenziswa ngayo ngokwenene:
Imigangatho yobugcisa: I-SONET kunye ne-SDH zimigangatho yobugcisa emibini ehambelanayo. I-SONET isetyenziswa kakhulu eMntla Melika, ngelixa i-SDH isetyenziswa kakhulu kwezinye iindawo. I-DWDM yiteknoloji yokwandisa ubude be-wavelength esetyenziselwa ukudlulisa imiqondiso emininzi ehambelanayo endaweni yemigangatho yefomathi yedatha.
Izinga ledatha: I-SONET kunye ne-SDH zichaza amacandelo esantya esimiselweyo sokudluliselwa kwedatha ngamanqanaba athile okanye iimodyuli, ngelixa i-DWDM igxile ngakumbi ekwandiseni izinga lokudluliselwa kwedatha iyonke ngokongeza iitshaneli zokudlulisela kwifayibha efanayo ye-optical.
Ukuguquguquka nokukhula: I-SDH ibonelela ngokuguquguquka okungaphezulu kune-SONET, iququzelela unxibelelwano lwamazwe ngamazwe, ngelixa itekhnoloji ye-DWDM ibonelela ngokuguquguquka okukhulu nokukhula kwisantya sedatha kunye nokusetyenziswa kwe-spectrum, okuvumela inethiwekhi ukuba yande njengoko imfuno ikhula.
Iindawo zokusetyenziswa: I-SONET kunye ne-SDH zihlala zisetyenziselwa ukwakha iinethiwekhi zomqolo kunye neenkqubo zazo zokuzikhusela kunye nokuzihlaziya, ngelixa i-DWDM isisisombululo sokudluliselwa kwenethiwekhi ye-optical ekude kakhulu kunye ne-ultra-long-long-distance, esetyenziselwa ukunxibelelana phakathi kwamaziko edatha okanye kwiinkqubo zekhebula ezingaphantsi kwamanzi, njl.
Ngamafutshane, i-SONET, i-SDH kunye ne-DWDM ziiteknoloji eziphambili zokwakha iinethiwekhi zonxibelelwano ze-optical fiber zanamhlanje nezexesha elizayo, kwaye iteknoloji nganye ineemeko zayo zokusetyenziswa kunye neenzuzo zobugcisa. Ngokukhetha ngokuchanekileyo nangokusebenzisa ezi teknoloji zahlukeneyo, abaqhubi benethiwekhi banokwakha iinethiwekhi zokudlulisa idatha ezisebenzayo, ezithembekileyo nezikhawulezayo kwihlabathi liphela.
Siza kuzisa iimveliso zethu ze-DWDM kunye ne-DCI BOX ukuze siye kwi-Africa Tech Festival, iinkcukacha zilandelayo:
INOMBOLO YEBHATHI yi-D91A,
Umhla: 12-14 Novemba, 2024.
Yongeza: IZiko leeNkomfa zaMazwe ngaMazwe laseKapa (CTICC)
Ndiyathemba ukuba siza kukubona apho!
Ixesha leposi: Novemba-06-2024