Hajoale, mabapi le theknoloji ea marang-rang ea optical fiber access, phihlello ea narrowband butle-butle e nkeloa sebaka ke phihlello ea marang-rang, 'me qetellong fiber home e fihletsoe.Broadband optical fiber ea marang-rang ea phihlello e fetoha e ke keng ea qojoa, 'me theknoloji ea PON e tla fetoha sebaka sa botekgeniki sa marang-rang a marang-rang a marang-rang nakong e tlang ka lebaka la lits'ebeletso tsa ona tse ngata, matsete a tlase le tlhokomelo e bonolo.
Fiber access network ke eng?
Optical fiber access network e bua ka marang-rang a phihlello moo mochini oa phetiso e leng fiber ea optical.Marang-rang a phihlello ea fiber a ka aroloa ka mekhahlelo e 'meli: marang-rang a sebetsang a optical (AON, Active Optical Network) le marang-rang a passive optical (PON, Passive Optical Network).
Active optical network e ka aroloa ka AON e thehiloeng ho SDH le AON e thehiloeng ho PDH;
Li-network tsa Passive Optical li ka aroloa ka narrowband PON le Broadband PON.
Marang-rang a phihlello a phetha karolo efe kahong ea marang-rang?
Marang-rang a tlhahisoleseling a entsoe ka marang-rang a mantlha, marang-rang a sebaka sa litoropo, marang-rang a phihlello, le marang-rang a sebaka sa bareki.Marang-rang a phihlello a borokhong ba marang-rang a sebaka sa metropolitan / backbone network.
Hona joale, saense le thekenoloji li ntse li hatela pele ka potlako, 'me palo e kholo ea lifaele tsa elektronike li lula li hlahisoa.Ka ho ikopanya ha lichaba tsa moruo le ho potlakisa boitsebiso ba sechaba, Inthanete e se e tumme ka ho pharaletseng, litšebeletso tsa boitsebiso li eketsehile ka mabifi, 'me mefuta ea litšebeletso tsa likhokahano e ntse e tsoela pele ho ata.Mofuta oa khoebo.Marang-rang a marang-rang a narrowband a fetohile bothata bo thibelang nts'etsopele ea marang-rang ho broadband.Mmaraka oa marang-rang oa phihlello o na le bokhoni bo boholo, 'me mahlale a macha a lula a hlaha ho fihlela litlhoko tsa basebelisi.Marangrang a phihlello ke sepheo le senotlolo sa nts'etsopele ea meralo ea motheo ea litaba ea naha.Theknoloji ea phihlello ea marang-rang e fetohile sebaka se tsepamisitsoeng maikutlo le matsete a setsi sa litsi tsa lipatlisiso, barekisi ba puisano, lik'hamphani tsa mehala le mafapha a sebetsang.
Melemo ea PON
1. E ka fana ka bokhoni ba phetisetso ea marang-rang e hlakileng le ea theko e tlase.
2. Ha ho bapisoa le marang-rang a sebetsang a optical, lits'enyehelo tsa ts'ebetso ea ho kenya, ho laela le ho lokisoa ha eona li tlaase, 'me tsamaiso e tšepahala ebile e tsitsitse, kahoo marang-rang a fihlella a sebelisa palo e kholo ea mekhoa ea PON.
3. Hobane PON e amohela mokhoa oa ho fumana ntlha-to-multipoint, litšenyehelo tsa motheo tsa ho beha fiber optical pakeng tsa ofisi e bohareng le basebelisi li tsamaisoa ke basebelisi, e leng se ka eketsang phaello ea lichelete ho haha marang-rang.Ha ho bapisoa le mokhoa oa ho lokisa fiber ea optical ea ho qetela bakeng sa mosebedisi e mong le e mong, boholo ba thepa ea PON e ntlafatsang litšebeletso bakeng sa palo e lekanang ea bareki e nyenyane 'me e nka sebaka se senyenyane ofising e bohareng.
4. PON e tšehetsa litšebeletso tse peli tsa setso (tšebeletso ea setso ea thelefono POTS, TV ea analog) le litšebeletso tsa marang-rang (ho fetisa lentsoe la IP, IPTV, ho kena Inthaneteng ka Broadband, joalo-joalo).
5.PON e ts'ehetsa basebelisi bohle ba bolulo (ho sebelisa POTS, TV ea analog le lits'ebeletso tsa data) le basebelisi ba bangata ba khoebo (ba sebelisang lits'ebeletso tsa T1 / E1 le Ethernet) ho arolelana marang-rang a phihlello (ho kenyeletsoa le lera la 'mele le lera la protocol) ntle le ho sebelisa phihlello e fapaneng. Ho fihlella marang-rang ho fana ka litšebeletso bakeng sa bona, kahoo ho fokotsa palo ea marang-rang a marang-rang a hasaneng.