CATV ndi shorthand term for service televizioni. Zipangizo zomwe zimagwiritsira ntchito makina opangira ma TV amathandizanso pa Intaneti. Othandizira ambiri pa intaneti (ISPs) amapereka makasitomala awo chingwe pa intaneti ntchito limodzi ndi televizioni pa mizere yomweyo ya CATV.
Zothandizira za CATV
Opereka chithandizo amagwiritsa ntchito mwachindunji kapena kugwiritsira ntchito makina ogwira ntchito kuti athandize makasitomala awo. Magalimoto a CATV amatha kugwiritsa ntchito zingwe zamtundu wa fiber operekera pa mapeto a othandizira komanso pazinyalala za coaxial pamapeto a makasitomala.
DOCSIS
Makina ambiri opangira chingwe amathandizira Deta ya Interseti ya Deta (DOCSIS) . DOCSIS imatanthauzira momwe kulumikiza kwa digito pazitsulo za CATV kumagwira ntchito. Chiyambi cha DOCSIS 1,0 chinalandiridwa mu 1997 ndipo pang'onopang'ono kwasintha bwino:
- DOCSIS 1.1 (1999) - yowonjezera Quality of Service (QoS) yoyenera kuthandizira mawu pa IP (VoIP)
- DOCSIS 2.0 (2001) - kuwonjezeka kwa chiwerengero cha data pamsewu wamtunda
- DOCSIS 3.0 (2006) - kuwonjezeka kwa chiwerengero cha data ndi kuwonjezera thandizo la IPv6
- DOCSIS 3.1 (2013+) - yowonjezera kuchuluka kwa deta
Kuti mukhale ndi chida chonse chokhazikika ndi ntchito yaikulu kuchokera pa Intaneti, makasitomala ayenera kugwiritsa ntchito modem yomwe imagwiritsa ntchito njira imodzi kapena yapamwamba ya DOCSIS yopezera ma intaneti.
Makampani a Internet Internet
Makasitomala a pa intaneti a Cable ayenera kukhazikitsa modem yachingwe (kawirikawiri, modememodzinso ya DOCSIS) kuti agwirizane ndi ma routi awo apanyumba kapena zipangizo zina ku intaneti. Ma intaneti angagwiritsenso ntchito zipangizo zamagetsi zomwe zimagwirizanitsa ntchito ya modem yachingwe ndi routiketi yotsegula mu chipangizo chimodzi.
Amakhasimende ayenera kulembera ku dongosolo la utumiki kuti alandire chingwe pa intaneti. Ambiri opereka amapereka mapulani osiyanasiyana kuchokera kumapeto mpaka kumapeto. Mfundo zazikuluzi zikuphatikizapo:
- Ndondomeko zomwe zimagwiritsa ntchito Intaneti, TV ndi nthawi zina ma telefoni amatha kutchulidwa kuti phukusi. Zomwe zimatchedwa "masewero atatu" zimaphatikizapo zonse zitatu. Ngakhale mtengo wa mapepala ophatikizidwa umaposa wa intaneti payekha, makasitomala ena amasungira ndalama mwa kusunga zolemba zawo ndi wothandizira omwewo.
- Ena ma intaneti amatenga malire pa kuchuluka kwa deta zomwe zingapangidwe pa nthawi iliyonse yobweretsera (kawirikawiri, pamwezi) pamene ena amapereka deta yopanda malire.
- Cable modems ikhoza kubwerekedwa kuti ikhale yowonjezera apo osati kugula mosiyana
CATV Connectors
Kuti mutsegule televizioni ku utumiki wa chingwe, chingwe cha coaxial chiyenera kutsegulidwa mu TV. Mtambo womwewo umagwiritsidwa ntchito kulumikiza modem ya chingwe ku utumiki wa chingwe. Zingwezi zimagwiritsa ntchito chida cha "F" chojambulira nthawi zambiri chotchedwa CATV chojambulira, ngakhale izi ndizogwirizanitsa zomwezo zomwe zimagwiritsidwa ntchito ndi maselo a TV a analog m'zaka makumi angapo zapitazi chisanafike TV.
CATV vs. CAT5
Ngakhale kuti dzina lofanana ndilo, CATV sichigwirizana ndi Gawo 5 (CAT5) kapena mitundu ina yamtundu wamba. CATV imakhalanso ndi mtundu wina wa utumiki wa televizioni kuposa IPTV .