Ithelevishini yekhebula ibilokhu iyingxenye yezimpilo zethu amashumi eminyaka, inikeza ukuzijabulisa nolwazi emakhaya ethu. Kodwa-ke, ngokuthuthuka okusheshayo kobuchwepheshe, ithelevishini yekhebula yendabuko iyaphambukiswa, futhi inkathi entsha iyeza. Ikusasa lethelevishini yekhebula lisekuhlanganisweni kobuchwepheshe be-CATV ONU (Cable TV Optical Network Unit).
Ama-CATV ONU, aziwa nangokuthi amadivayisi e-fiber-to-the-home (FTTH), adlala indima ebalulekile ekushintsheni indlela i-cable TV ehanjiswa ngayo. Lobu buchwepheshe buletha izinsizakalo ze-inthanethi ezisheshayo, ithelevishini yedijithali kanye nezwi ngqo ekhaya lomsebenzisi ngezintambo ze-fiber optic. Buthathe indawo yekhebula le-coaxial lendabuko, banikeza izinzuzo eziningi, futhi bavula indlela yoguquko embonini ye-cable TV.
Enye yezinzuzo eziyinhloko ze-I-CATV ONUubuchwepheshe buyi-bandwidth emangalisayo obuyinikezayo. Izintambo ze-fiber optic zinamandla angavamile futhi zingadlulisa idatha eningi ngesivinini esimangalisayo. Ngokuhlanganisa ama-CATV ONU, abahlinzeki be-cable TV banganikeza iziteshi ze-UHD, izinsizakalo zokusakaza ezifunwayo, kanye nezici zokuxhumana ezazingacatshangwa ngaphambili. Intuthuko ye-bandwidth iqinisekisa isipiliyoni sokubuka esingenamthungo nesithuthukisiwe kubathengi.
Ngaphezu kwalokho, ubuchwepheshe be-CATV ONU abugcini nje ngokwandisa ikhwalithi kanye nenani leziteshi ezitholakalayo, kodwa futhi busekela izinketho zokwenza ngokwezifiso kanye nokwenza ngokwezifiso. Ngokuhlanganisa ukuxhumana kwe-inthanethi, abathengi bangafinyelela izinhlelo zokusebenza eziningi, kufaka phakathi amapulatifomu evidiyo afunwayo, izinsizakalo zokusakaza kanye nokuqukethwe okusebenzisanayo. Lokhu kuvumela abasebenzisi ukuthi bakhethe ngokukhululekile ukuthi bafuna ukubuka ini nokuthi nini, okushintsha ngokuphelele imodeli ye-TV yekhebula yendabuko.
Enye inzuzo ebalulekile yobuchwepheshe be-CATV ONU ukuthi ingakonga izindleko. Izintambo ze-fibre optic zithembeke kakhulu futhi zidinga ukulungiswa okuncane kunezintambo ze-coaxial zendabuko. Ukuqina kwengqalasizinda okwandisiwe kunciphisa isidingo sokulungiswa njalo nokufakwa esikhundleni, kunciphisa izindleko zabahlinzeki bezintambo. Ngakho-ke, lokhu konga izindleko kungadluliselwa kubathengi, okuholela kumaphakheji e-cable TV angabizi kakhulu.
Ngaphezu kwalokho, ubuchwepheshe be-CATV ONU bunikeza ithuba kubahlinzeki be-cable TV ukuthi banikeze izinsizakalo ezihlanganisiwe. Ngokuhlanganisa izinsizakalo zezwi kanye ne-inthanethi esheshayo, abathengi bangahlangabezana nazo zonke izidingo zabo zokuxhumana nezokuzijabulisa ezivela kumhlinzeki oyedwa. Lokhu kuhlangana kwezinsizakalo kwenza kube lula ulwazi lomthengi futhi kususa inkinga yokuphatha ukubhalisa okuningi.
Ngaphezu kwalokho, ukusabalala kanye nokuguquguquka kobuchwepheshe be-CATV ONU kwenza bube yisivikelo esikhathini esizayo. Njengoba ubuchwepheshe buqhubeka nokuthuthuka, ukuhlanganiswa kwezici ezintsha kanye nezinsizakalo kuba lula ngamanethiwekhi e-fiber optic. Abahlinzeki be-Cable TV bangazivumelanisa kalula nezidingo zabathengi ezishintshayo kanye nezintandokazi, baqinisekise ukuthi bahlala bencintisana futhi behamba phambili embonini.
Ngamafuphi, ikusasa le-cable TV lisekuhlanganisweni kweI-CATV ONUubuchwepheshe. Lesi sixazululo esisha siguqula imodeli ye-cable TV yendabuko, sinikeza i-bandwidth ethuthukisiwe, izinketho zokwenza ngokwezifiso kanye nokonga izindleko. Ngokusebenzisa lobu buchwepheshe, abahlinzeki be-cable TV bangahlangabezana nesidingo sabathengi sokuqukethwe kwekhwalithi ephezulu, okuhlangenwe nakho okwenziwe ngezifiso kanye nezinsizakalo ezihlanganisiwe. Isikhathi sobuchwepheshe be-CATV ONU sesifikile, siletha inkathi entsha ye-cable TV, iletha ikusasa eliqhakazile nelijabulisayo kubabukeli emhlabeni jikelele.
Isikhathi sokuthunyelwe: Septhemba-07-2023