Ilizwe lokuqala (O1)
I-ONU kweli lizwe isanda kunikwa amandla kwaye isekwi-LOS / LOF.Emva kokuba umlambo osezantsi ufunyenwe, i-LOS kunye ne-LOF zisusa, kunye neI-ONUiqhubela kwindawo yokulinda (O2).
Ilizwe elilindileyo (O2)
II-ONUkweli lizwe lifunyenwe kwi-flow ezantsi kwaye ilinde iparameters zenethiwekhi ukuba zamkelwe.Xa i-ONU ifumana umyalezo we-Upstream_Overhead, qwalasela i-ONU ngokusekelwe kwezi parameters zenethiwekhi (umzekelo, i-delimiters, imo yamandla, ukulibaziseka kokulinganisa kwangaphambili) kwaye idluliselwe kwi-serial number state (O3).
Uthotho-Inombolo-imeko (O3)
IOLTithumela imiyalezo yeSicelo-yeNani kuzo zonke ii-ONU ezikweso simo ukufumana ii-ONU ezintsha kunye namanani azo Uthotho.Xa iOLTufumanisa entshaI-ONU, iI-ONUilindele iOLTukuyabela i ONU-ID.IOLTyabela i-ONU-ID ngomyalezo we-Asign_ONU-ID.Ukudluliselwa kwe-ONU ukuya kwi-state range (O4) emva kokufumana i-ONU-ID.
I-Ranging-state (O4)
Iimpawu ezigqithisiweyo ezivela kwii-ONU ezahlukeneyo kufuneka zihambelane xa zifika kwiOLT, apho nganyeI-ONUidinga ukulibaziseka kokulinganisa, okulinganiswa kwimeko yokusukela.I-ONU ifumana iRangi_Time umyalezo kwaye ifudukele kwimeko yokusebenza (O5).
I-Operation-state (O5)
I-Onus kule meko ingathumela idatha kunye nemiyalezo ye-PLOAM phantsi kolawulo lwe-OLT, kwaye i-ONUs kweli lizwe inokuseka nolunye uxhulumaniso njengoko lufunekayo.Xa i-range iphumelele, zonke ii-ONU zithumela imiqondiso ngokulibaziseka ngokulinganayo ukugcina ulungelelwaniso lwesakhelo se-uplink.Iimpawu ezithunyelwe zii-ONU ezahlukeneyo ziyakufika kwiOLTngokwahlukeneyo, kodwa uphawu ngalunye luzakuvela kanye apho lufanele ukuvela khona kwisakhelo se-uplink.Misa iI-ONUekusebenzeni: Ngexesha lokusebenza okuqhelekileyo, i-OLT inokumisa i-ONU ukuthumela iimpawu zokufumana inombolo yokulandelelana kwezinye ii-ONU okanye ukulinganisa umgama wezinye ii-ONU.IOLTuyayeka ukugunyazisa yonke uplink bandwidth ixesha elithile, kunyeI-ONUisebenza ngendlela eqhelekileyo.Ekubeni akukho sigunyaziso esifunyenweyo, akukho mqondiso uya kuhanjiswa, okubangela ukuba kubekho ixesha elizolileyo, ukwenzela ukuba i-OLT yenze zonke ii-ONU zimise ukuhambisa iimpawu.
I-POPU-state (O6)
II-ONUkwimeko yokusebenza (O5) ingena kweli lizwe xa ibona i-LOS okanye i-LOF.Kule meko, i-ONU iyeka kwangoko ukuthumela imiqondiso, ukuze iOLTizakubona i-alam ye-LOS yale ntoI-ONU.Xa i-ODN fiber iphazamisekile, ezininzi ze-ONU ziya kungena kweli lizwe.Ngenxa yokuthembeka kwenethiwekhi, enye yezi ndlela zilandelayo kufuneka isetyenziswe:
Ukuba utshintsho lokugada luvuliwe, zonke ii-ONU ziyakutshintshela kwifiber yokulinda.Ngeli xesha, zonke ii-ONU ziya kuqhuba ukusuka kwakhona, apho iOLT ithumela umyalezo woSasazo lwePOPUP ukwazisa zonke ii-ONU ukuba zingene kwimo esukela (O4).
Ukuba akukho ukutshintshwa kokukhusela kodwaI-ONUinamandla okhuseleko lwangaphakathi, iOLTithumela umyalezo oLathisiweyo we POPUP ukwazisa iI-ONUukungena kwimeko yokusebenza (O5).Xa i-ONU ingena kwimo ye-O5, iOLTkufuneka ukubona iI-ONUkuqala kwaye emva koko
Buyisela inkonzo ye ONU.Ukuba iI-ONUayibuyiseli kwi-LOS okanye i-LOF, i-ONU ayizukufumana umyalezo woSasazo lwePOPUP okanye umyalezo oKhokelwe kwi-POPUP, kwaye i-ONU ingena kwimeko yokuqala (O1) emva kwexesha le-TO2.
Emergency-Stop-state (O7)
Xa iI-ONUifumana i-Diable_Serial_Number message nge-"Disable" option, i-ONU ingena kwi-emergency stop state (O7) kwaye icime i-laser.Kwimeko ye-O7, i-ONU ayivumelekanga ukuhambisa iimpawu.Ukuba iI-ONUayingeni ngempumelelo i-O7 karhulumente kunye neOLTisenokuqhubeka ifumana umqondiso othunyelwe yi-ONU, iOLT izakuvelisa i-alamu yeDfi.Xa impazamo ye-ONU isonjululwe, iOLTithumela i Khubaza_Inombolo_ yomyalezo weNombolo ngo "Vumela" ukhetho lokuvula loo ONU.Emva kokufumana umyalezo, iI-ONUingena kwimo yokulinda (O2), kwaye zonke iiparameters (kubandakanya inombolo yolandelelwano kunye ne-ONU-ID) ziya kutshekishwa kwakhona.
Ezi ngongoma zingentla zolwazi zimalunga nenkqubo yenkcazo yeI-ONUubume kunye nokusebenza okuziswe yi-Shenzhen HDV Phoelectron Technology LTD., engumvelisi okhethekileyo kwizixhobo zonxibelelwano njengeemveliso zayo eziphambili.Isixhobo esinxulumeneyo sibandakanya: OLT ONU/I-IntelligentONU/ AC ONU/Ifayibha ONU/CATV ONU/GPON ONU/XPONONU/OLT izixhobo/OLT Switch/GPON OLT/EPONOLTnjalo njalo, wamkelekile abasebenzisi ukuba beze kuboniswano lwemveliso.
