Kulezi zinsuku, emadolobheni omphakathi, amakhamera okuqapha afakwa kuwo wonke amakhona. Sizobona 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 kuyanda njalo, futhi ukuqapha ukuphepha kuyadingeka kunoma iyiphi indawo. Kodwa-ke, ubunzima bentuthuko yasemadolobheni benza uhlelo lokuqapha lwezindlela zokufinyelela zendabuko lungakwazi ukuhlangabezana ngokugcwele nezidingo, futhi i-PON iyasetshenziswa. Uhlelo lokuqapha ukufinyelela kwenethiwekhi luye lwaba luthandwa kancane kancane.
Njengedivayisi yokufinyelela ebalulekile ohlelweni lwe-PON, ukukhetha i-ONU kubalulekile, ngakho-ke iyiphi i-ONU engcono nokuthi ungayikhetha kanjani?
I-ONU iyidivayisi esetshenziswa ngabasebenzisi bezinhlelo zokusebenza ze-PON kanye nedivayisi yesiphelo 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 yeyunithi ukuxhuma ehhovisi eliphakathi le-OLT ukuze inikeze izinsizakalo ezifana nedatha, izwi, nevidiyo. Inesibopho sokwamukela idatha ethunyelwe yi-OLT, iphendule imiyalo ethunyelwe yi-OLT, ifake idatha ku-buffer bese iyithumela ku-OLT. Idinga ukuzwela okuphezulu futhi kulula ukuyisebenzisa.
Ama-ONU ahlukaniswe ngama-ONU ajwayelekile nama-ONU ane-PoE. Eyokuqala iyidivayisi ye-ONU evame kakhulu futhi yi-ONU esetshenziswa kakhulu. Eyokugcina inomsebenzi we-PoE, okungukuthi, inezixhumi eziningana ze-PoE. Ungaxhuma amakhamera okuqapha ngalezi zixhumi. Asebenza kahle futhi asuse izintambo zikagesi eziyinkimbinkimbi.
Ngaphezu kwamachweba e-PoE, ama-ONU ane-PoE kumele abe ne-PON. Ngale PON, angaxhunywa ku-OLT ukuze akhe inethiwekhi ye-PON iyonke.
Isikhathi sokuthunyelwe: Novemba-19-2021