Kulezi zinsuku, emadolobheni omphakathi, amakhamera okuqapha afakwa kuwo wonke amakhona. Sibona amakhamera ahlukahlukene okuqapha ezakhiweni eziningi zokuhlala, ezakhiweni zamahhovisi, ezitolo ezinkulu, emahhotela nakwezinye izindawo ukuvimbela ukwenzeka kwemisebenzi engekho emthethweni.
Njengoba intuthuko eqhubekayo yomnotho nobuchwepheshe iqhubeka, ukuqwashisa kwabantu ngokuqapha ukuphepha kuyaqhubeka nokuthuthuka, futhi kuyadingeka ukuthi noma iyiphi indawo ibe nokuqapha ukuphepha. Kodwa-ke, ubunzima bentuthuko yasemadolobheni benza uhlelo lokuqapha lwendlela yokufinyelela yendabuko lungakwazi ukuhlangabezana ngokugcwele nezidingo, futhi uhlelo lokuqapha olusebenzisa ukufinyelela kwenethiwekhi ye-PON luya ngokuya luthandwa.
Njengedivayisi yokufinyelela ebalulekile ohlelweni lwe-PON, ukukhetha i-ONU kubalulekile. Ngakho-ke iyiphi i-ONU engcono futhi ungayikhetha kanjani?
I-ONU iyidivayisi esetshenziswa kakhulu yizinhlelo zokusebenza ze-PON. Iyidivayisi ye-terminal ene-bandwidth ephezulu futhi engabizi kakhulu edingekayo ekushintsheni kusukela "enkathini yekhebula lethusi" kuya "enkathini yefayibha yokukhanya". Idlala indima ebalulekile ekwakhiweni kwenethiwekhi.
I-ONU iyiyunithi yenethiwekhi yokukhanya, esebenzisa i-fiber eyodwa ukuxhuma ehhovisi eliphakathi i-OLT ukuze inikeze izinsizakalo ezifana nedatha, izwi, nevidiyo. Inesibopho sokwamukela idatha ethunyelwe yi-OLT, ukuphendula imiyalo ethunyelwe yi-OLT, ukubhafa idatha nokuyithumela ku-OLT. Idinga ukuzwela okuphezulu futhi kulula ukuyisebenzisa.
Ama-ONU ahlukaniswe ngama-ONU ajwayelekile kanye nama-ONU ane-PoE. Eyokuqala iyidivayisi ye-ONU evame kakhulu futhi yi-ONU esetshenziswa kakhulu. Eyokugcina inamandla e-PoE, okungukuthi, inamachweba amaningana e-PoE, lapho amakhamera okuqapha angaxhunywa khona ukuze asebenze kahle futhi asuse izintambo zikagesi eziyinkimbinkimbi.
Ngaphezu kwechweba le-PoE, i-ONU ene-PoE kumele ibe ne-PON. Ngale PON, ingaxhunywa ku-OLT ukuze yakhe inethiwekhi ye-PON iyonke.
Njengamanje, lolu hlobo lwe-ONU ene-PoE luthandwa yizinkampani zobunjiniyela zokuqapha. Isibonelo, intengo ye-ONU ye-Sushan Weida iphezulu kakhulu, kodwa ixazulula izinkinga eziningi ezingadingekile ezinzima. Ngakho-ke, uma inethiwekhi ye-PON isetshenziswa kuphrojekthi yokuqapha, umsebenzi we-ONU one-PoE ungakhethwa.
Isikhathi sokuthunyelwe: Feb-25-2022