Okwangoku, ngokwetekhnoloji ye-fiber optical access network, ufikelelo lwe-narrowband luthatyathelwa indawo lufikelelo lwebroadband, kwaye ekugqibeleni ifayibha ikhaya liyafezekiswa. I-broadband optical fiber yokufikelela kwinethiwekhi iba yinto engenakuphepheka, kwaye iteknoloji ye-PON iya kuba yindawo yobugcisa yokufikelela kwinethiwekhi ye-broadband kwixesha elizayo ngenxa yeenkonzo ezininzi, utyalo-mali oluphantsi kunye nokugcinwa lula.
Yintoni i-fiber access network?
Inethiwekhi yokufikelela kwifiber optical ibhekisa kuthungelwano lofikelelo apho i-transmission medium is a optical fiber. Uthungelwano lwe-fiber optical access networks lunokwahlulwa ngokobugcisa lube ngamacandelo amabini: uthungelwano olusebenzayo lwe-optical network (AON, Active Optical Network) kunye ne-passive optical networks (PON, Passive Optical Network).
Inethiwekhi ye-optical esebenzayo inokwahlulwa ibe yi-AON esekelwe kwi-SDH kunye ne-AON esekelwe kwiPDH;
Uthungelwano lwe-passive optical lunokwahlulwa lube yi-PON encinci kunye ne-Broadband PON.
Yiyiphi indima edlalwa yinethiwekhi yokufikelela kulwakhiwo lwenethiwekhi?
Uthungelwano lolwazi luqulunqwe ngumqolo ongundoqo womnatha, uthungelwano lwengingqi yemetropolitan, uthungelwano lofikelelo, kunye nothungelwano lwezakhiwo zabathengi. Inethiwekhi yokufikelela ikwibhulorho yothungelwano lwendawo yemetropolitan / inethiwekhi yomqolo.
Okwangoku, isayensi kunye nobuchwepheshe buqhubela phambili ngokunyuka, kwaye inani elikhulu leefayile ze-elektroniki zihlala ziveliswa. Ngokudibana kwezoqoqosho kunye nokukhawuleza kolwazi lwentlalo, i-Intanethi iye yanda kakhulu, iinkonzo zedatha ziye zanda ngobundlobongela, kwaye iintlobo zeenkonzo zonxibelelwano ziye zaqhubeka zanda. Uhlobo lweshishini. Inethiwekhi yokufikelela kwi-narrowband ibe ngumqobo othintela uphuhliso lwenethiwekhi kwi-broadband. Imarike yenethiwekhi yokufikelela inomthamo omkhulu, kwaye ubugcisa obutsha buhlala buvela ukuhlangabezana neemfuno zabasebenzisi. Uthungelwano lofikelelo lujoliso nesitshixo kuphuhliso lweziseko zolwazi zesizwe. Itekhnoloji yokufikelela kuthungelwano iye yaba yeyona nto kugxilwe kuyo kunye notyalo-mali kumaziko ophando, abathengisi bonxibelelwano, iinkampani zonxibelelwano kunye namasebe asebenzayo.
Izinto ezilungileyo zePON
1. Inokubonelela nge-broadband ecacileyo kunye neendleko eziphantsi zothumelo lwezakhono.
2. Xa kuthelekiswa nenethiwekhi ye-optical esebenzayo, ukufakwa kwayo, ukugunyaziswa kunye nokugcinwa kweendleko zokusebenza ziphantsi, kwaye inkqubo inokwethenjelwa kwaye izinzile, ngoko inethiwekhi yokufikelela isebenzisa inani elikhulu leenkqubo ze-PON.
3. Ngenxa yokuba i-PON ithatha i-point-to-multipoint mode yokufikelela, iindleko zeziseko zophuhliso zokubeka i-fiber optical phakathi kweofisi ephakathi kunye nabasebenzisi zithwalwa ngabasebenzisi, ezinokunyusa imbuyekezo kutyalo-mali kulwakhiwo lwenethiwekhi. Xa kuthelekiswa nendlela yokuqwalasela i-fiber optical ekupheleni kokuphela komsebenzisi ngamnye, umthamo wezixhobo ze-PON eziphucula iinkonzo kwinani elifanayo labathengi lincinci kwaye lithatha indawo encinci kwiofisi ephakathi.
4. I-PON ixhasa zombini iinkonzo zemveli (inkonzo yomnxeba yemveli ye-POTS, i-analog TV) kunye neenkonzo ze-broadband (ukuhanjiswa kwezwi le-IP, i-IPTV, ukufikelela kwi-intanethi ye-broadband, njl.).
I-5.PON isekela bonke abasebenzisi beendawo zokuhlala (usebenzisa i-POTS, i-analog TV kunye neenkonzo zedatha) kunye nabasebenzisi abaninzi bezentengiselwano (besebenzisa iinkonzo ze-T1 / E1 kunye ne-Ethernet) ukwabelana ngenethiwekhi yokufikelela (kubandakanywa umaleko womzimba kunye neprotocol layer) ngaphandle kokusebenzisa ukufikelela okwahlukileyo. Ukufikelela kwinethiwekhi kubonelela ngeenkonzo kubo, ngaloo ndlela kuncitshiswe inani lothungelwano olusasazekileyo lokufikelela.