Pakadali pano, IPTV, atatu akuluakulu ogwiritsira ntchito matelefoni, akulowa mosalekeza pamsika wapa TV wamawayilesi achikhalidwe ndi wailesi yakanema. Ogwiritsa ntchito wailesi ndi wailesi yakanema akukumana ndi kutayika kwakukulu kwa ogwiritsa ntchito, ndipo kusintha kwa chitukuko cha wailesi ndi wailesi yakanema kuli pafupi. Zinganenedwe kuti aliyense amene amalamulira pabalaza amagwira ogwiritsa ntchito. Bizinesi yayikulu ya ogwiritsa ntchito wailesi yakanema ndi wailesi yakanema imaphatikizapo ntchito zamawayilesi ndi kanema wawayilesi komanso ntchito zapaintaneti zanjira ziwiri (kugwiritsa ntchito intaneti/VOD/IPTV/e-government/interactive games) komanso ntchito zamabroadband. Choncho, kumanga FTTH kwa wailesi ndi wailesi yakanema mosalephera kumakhudza ntchito yomanga FTTH kwa wailesi ndi TV misonkhano ndi kumanga FTTH ntchito njira ziwiri deta. Kuphatikiza zomwe zilipo pawailesi ndi kanema wawayilesi, kukhazikitsidwa kwa FTTH kumatengera njira yothetsera vutoli: single fiber three wave + broadband access solution. Lero, mkonzi akufotokozerani makamaka.
Mu single fiber three wave +broadband service access scheme, theONUGawo la data la optical cat limagwiritsa ntchito ma siginali a 1310nm/1490nm, ndiONUGawo la CATV limagwiritsa ntchito ma siginecha a 1550nm. M'chipinda chakumapeto kwa wailesi ndi kanema wawayilesi, zida za WDM wavelength division multiplexing zimaphatikizidwa ndi chingwe cha fiber optic, ndiyeno zimadutsa pakupatsirana ndikugawanika kwa magawo osiyanasiyana a zida za ODN isanafike kunyumba ya wogwiritsa ntchito. MuONUOptical cat unit yanyumba ya wogwiritsa ntchito, single fiber three waveONUCATV yopangidwa ndi kampani yathu imagwiritsidwa ntchito, ndiko kuti, data + CATV kuwala ndi makina awiri mu GPON imodzi.ONU, yomwe imatha kutulutsa mwachindunji ma siginecha apawailesi yakanema ndi ma data a Broadband data. Panthawi imodzimodziyo, ogwira ntchito pawailesi ndi wailesi yakanema amathanso kupanga ogwiritsa ntchito ma Broadband potengera dongosololi, kukwaniritsa zopezera ntchito zambiri, ndikuchepetsa ndalama zomanga ma network.
Ubwino wa single fiber three wave access scheme ndi motere:
1. Kuwongolera-kutha-kumapeto: Chifukwa chakumapeto mpaka-kumapeto kwa maukonde amtundu umodzi wa fiber three wave, ndikosavuta kuwongolera.ONUamphaka owoneka. Oyang'anira ma netiweki amatha kugwiritsa ntchito ntchito monga kugawa ntchito zakutali, kukonza zolakwika, ndikutsegula/kutseka ntchito za CATV kudzera kutsogolo.OLTzipangizo.
2. Mtengo wotsika wa ODN: Chifukwa chakuti ma siginecha a TV owulutsa ndi ma data a Broadband amafalitsidwa pamtundu womwewo wa optical fiber, dongosololi limachepetsa kwambiri mtengo womanga wa zinthu za ODN kuchokera kutsogolo kupita kunyumba ya wogwiritsa ntchito.
System topology chithunzi