Isifunda-sokuqala (O1)
II-ONUkulesi simo isanda kufakwa amandla futhi iseku-LOS / LOF. Lapho umfula ongezansi sewamukelwe, i-LOS ne-LOF iqeda, kanyeI-ONUiya kusimo sokulinda (O2).
I-Standby-state (O2)
II-ONUkulesi simo samukelwe ekugelezeni komfula futhi silinde amapharamitha enethiwekhi ukuthi atholwe. Lapho i-I-ONUithola umlayezo we-Upstream_Overhead, lungiselela i-I-ONUngokusekelwe kulawa mapharamitha enethiwekhi (isb, imingcele, imodi yamandla, ukubambezeleka kokulinganisa okusethiwe) futhi kudluliselwe kusimo senombolo yomkhiqizo (O3).
I-Serial-Number-state (O3)
IOLTithumela imilayezo ye-Serial-Number Isicelo kubo bonkeAma-ONUkuleso simo ukuthola okushaAma-ONUkanye nezinombolo zabo ze-Serial. Lapho i-OLTuthola okushaI-ONU, iI-ONUilindele iOLTukuyinikezaI-ONU-ID. IOLTyabela i-ONU-ID ngomlayezo we-Assign_ONU-ID.I-ONUidlulisela kusimo esisukela (O4) ngemva kokuthola i-ONU-ID.
I-Range-state (O4)
Amasignali ngocansi kusuka ezahlukeneAma-ONUkufanele zivumelaniswe lapho zifika endaweniOLT, ngayinye ngayinyeI-ONUidinga ukubambezeleka kokulinganisa, okukalwa kusimo esihlukanisiwe. II-ONUithola umlayezo we-Ranging_Time bese ithuthela esimweni sokusebenza (O5).
I-Operation-state (O5)
Onuskulesi simo ingathumela idatha kanye nemilayezo ye-PLOAM ngaphansi kolawulo lweOLT, futhiAma-ONUkulesi simo kungaphinda kusungulwe okunye ukuxhumana njengoba kudingeka. Lapho ukuhlukahluka kuphumelele, konkeAma-ONUthumela amasiginali ngokuya ngokulibaziseka kwawo okulinganayo ukuze kugcinwe ukuvumelanisa kohlaka lwe-uplink. Amasignali athunyelwa abahlukeneAma-ONUuzofika laOLTngokwehlukana, kodwa isignali ngayinye izovela lapho kufanele ivele khona kuhlaka lwe-uplink. Misa okwesikhashana i-I-ONUisebenza: Ngesikhathi sokusebenza okujwayelekile, iOLTingase imise okwesikhashana iI-ONUukuthumela amasignali ukuthola inombolo yokulandelana yezinyeAma-ONUnoma ukukala ibanga lomunyeAma-ONU. IOLTiyayeka ukugunyaza wonke umkhawulokudonsa we-uplink isikhathi esithile, kanye ne-I-ONUisebenza ngendlela evamile. Njengoba kungekho ukugunyazwa okutholiwe, akukho siginali ezodluliselwa, okuholela esikhathini esinokuthula, ukuze iOLTyenza konkeAma-ONUmisa amasignali okudlulisa.
I-POPUP-state (O6)
II-ONUesimweni sokusebenza (O5) ingena kulesi simo lapho ithola i-LOS noma i-LOF. Kulesi simo, i-I-ONUngokushesha uyeka ukudlulisa amasignali, ukuzeOLTizothola i-alamu ye-LOS yalokhuI-ONU. Lapho i-ODN fiber iphazamiseka, abaningiAma-ONUizongena kulesi simo. Ukuze uthole ukwethembeka kwenethiwekhi, enye yezindlela ezilandelayo kufanele isetshenziswe:
Uma ukushintsha konogada kunikwe amandla, konkeAma-ONUintandoshintshaphezu kwefayibha elindile. Ngalesi sikhathi, konkeAma-ONUuzoqhuba ezisukela futhi, okuyiwonaOLTithumela umlayezo we-POPUP Wokusakaza ukwazisa wonke ama-ONU ukuthi afake isimo esisukela (O4).
Uma kungekho ukushintshwa kokuvikela kodwa i-I-ONUinamandla okuvikela angaphakathi, iOLTithumela umlayezo we-POPUP oqondiswe ukwazisa iI-ONUukufaka isimo sokusebenza (O5). Lapho i-I-ONUingena ku-O5 state, iOLTidinga ukubona iI-ONUkuqala bese emva kwalokho
Buyisela isevisi ye-ONU. Uma iI-ONUayilulami ku-LOS noma i-LOF, iI-ONUngeke ithole umlayezo we-POPUP Wokusakaza noma umyalezo Oqondisiwe we-POPUP, kanye neI-ONUingena kusimo sokuqala (O1) ngemva kwesikhathi esingu-TO2.
I-Emergency-Stop-state (O7)
Lapho i-I-ONUithola umlayezo we-Diable_Serial_Number onenketho ethi "Khubaza", iI-ONUingena esimweni esiphuthumayo sokumisa (O7) bese ivala i-laser. Esimweni se-O7, iI-ONUkwenqatshelwe ukudlulisa amasignali. Uma iI-ONUayingeni ngempumelelo ku-O7 state kanye ne-OLTusengakwazi ukuqhubeka nokuthola isignali ethunyelwe yi-I-ONU, iOLTizokhiqiza i-alamu ye-Dfi. Lapho iphutha iI-ONUiyaxazululwa, iOLTithumela umlayezo we-Diable_Serial_Number onenketho ethi "Vumela" ukuze wenze lokho kusebenzeI-ONU. Ngemva kokuthola umlayezo, i-I-ONUingena kusimo sokulinda (O2), futhi wonke amapharamitha (okuhlanganisa inombolo yokulandelana kanye ne-ONU-ID) azohlolwa kabusha.
Amaphuzu olwazi angenhla amayelana nenqubo yencazelo yeI-ONUisimo nokwenza kusebenze okulethwe yi-Shenzhen HDV Phoelectron Technology LTD., engumkhiqizi ogxile ezintweni zokuxhumana njengemikhiqizo yayo eyinhloko. Imishini ehlobene ibandakanya: OLTI-ONU/ IntelligentONU/ ACI-ONU/ I-FiberI-ONU/ CATVI-ONU/ GPONI-ONU/XPONONU/OLTimpahla/OLTShintsha/GPONOLT/ EPONOLTnokunye, wamukelekile abasebenzisi ukuthi beze ekuboniseni umkhiqizo.
