I-CATV yikhashana elifushane lemisebenzi yethelevishini yekhebula. Ingqalasizinda efanayo yeklabhu esekela i-cable TV ibuye isekele i-Intanethi ye-intanethi. Abahlinzeki abaningi be- intanethi (ISPs) banikezela amakhasimende abo ikhebula le-intanethi isevisi kanye nethelevishini phezu kwemigqa efanayo ye-CATV.
Ingqalasizinda ye-CATV
Abahlinzeki bamakhansela bangasebenzisa ngqo noma baqashise ikhono lenethiwekhi ukusekela amakhasimende abo. Ukuhamba kwe-CATV ngokuvamile kugijima ngezintambo ze-fiber optic ekugcineni komhlinzeki nangaphezu kwezintambo ze-coaxial ekupheleni kwamakhasimende.
I-DOCSIS
Amanethiwekhi amanethiwekhi amaningi asekela i- Data Over Cable Interface Specification (DOCSIS) . I-DOCSIS ichaza ukuthi ukubonakaliswa kwedatha kweminye imigqa ye-CATV isebenza kanjani. I-original DOCSIS 1,0 yaqinisekiswa ngo-1997 futhi iye yathuthukiswa kancane kancane kule minyaka:
- I-DOCSIS 1.1 (1999) - yanezela ikhwalithi ye-Quality of Service (QoS) edingekayo ukusekela izwi nge-IP (VoIP)
- I-DOCSIS 2.0 (2001) - ukukhula kwamazinga we-traffic emgwaqeni ophezulu
- I-DOCSIS 3.0 (2006) - inani lamanani lenyuka futhi lengeze i- IPv6 ukwesekwa
- I-DOCSIS 3.1 (2013+) - inyuke kakhulu inani lamanani
Ukuze uthole isethi esigcwele sesici nokusebenza okuphezulu kusuka ku-intanethi ukuxhumana kwe-inthanethi, amakhasimende kumele asebenzise i-modem esekela inguqulo efanayo noma ephakeme ye-DOCSIS ukwesekwa kwenethiwekhi yomhlinzeki wabo.
Izinsiza ze-Cable Internet
Amakhasimende e-Intanethi ye-Cable kumele afake i- modem yekhebula (ngokuvamile, i-modem ye-DOCSIS) ukuyobheja umzila wabo wokuhambisa ekhaya noma amanye amadivaysi enkonzweni ye-intanethi. Amanethiwekhi asekhaya angasebenzisa futhi amadivaysi esango lendabuko ahlanganisa ukusebenza kwe-modem yekhebula ne-broadband router kudivayisi eyodwa.
Amakhasimende kufanele abhalisele ohlelweni lwezinsiza ukuze athole i-intanethi ye-Intanethi. Abahlinzeki abaningi banikeza izinqumo eziningi zezinhlelo ezivela ekupheleni okuphansi kuya ekupheleni okuphezulu. Ukucabangela okubalulekile kuhlanganisa:
- Izinhlelo ezihlanganisa i-intanethi ye-intanethi, i-cable TV kanye nesevisi yocingo enkonzweni eyodwa zibizwa ngokuthi amaphakheji. Okubizwa ngokuthi "ukudlala kathathu" amaphakheji kufaka zonke ezintathu. Ngenkathi izindleko zamaphakheji ezinqwabelene zidlula ezesevisi ye-Intanethi yedwa, amanye amakhasimende alondoloza imali ngokugcina okubhaliselwe nomhlinzeki ofanayo.
- Amanye amasevisi we-intanethi ye-intanethi afaka imingcele ephezulu kakhulu emininingwaneni engadalwa ngesikhathi ngasinye sokukhokha (ngokuvamile, njalo ngenyanga) kanti abanye banikeza idatha engenamkhawulo.
- I-modem yekhamera ingavunyelwa ukuqasha imali eyengeziwe kunokuba ithengwe ngokwehlukana
Izixhumanisi ze-CATV
Ukuhlanganisa i-TV kumasevisi wekhebula, ikhebula le-coaxial kufanele lixhunyiwe ku-TV. Uhlobo olufanayo lwekhebula lusetshenziselwa ukuxhuma i-modem yekhebula kumsebenzi wekhebula. Lezi zingcingo zisebenzisa isisindo sezinga "F" isitayela esivame ukubizwa ngokuthi isixhumi se-CATV, nakuba lezi zixhumi ezifanayo ezavame ukusetshenziswa ngama-setups e-analog TV eminyakeni embalwa edlule ngaphambi kokuba i-cable TV ikhona.
I-CATV vs. CAT5
Naphezu kwegama elifanayo, i-CATV ayihlobene neSigaba 5 (CAT5) noma ezinye izinhlobo zezintambo zenethiwekhi zendabuko. I-CATV iphinde ibhekisele enhlobonhlobo yesevisi yethelevishini kune- IPTV .