Dziko Loyamba (O1)
TheONUm'bomali adangoyatsidwa ndipo akadali ku LOS / LOF. Mtsinje ukangolandiridwa, LOS ndi LOF zimachotsa, ndiONUimasunthira ku standby state (O2).
Standby-state (O2)
TheONUm'derali walandiridwa kumtsinje wapansi ndipo akudikirira kuti magawo a intaneti alandire. Pamene aONUamalandira uthenga wa Upstream_Overhead, sinthaniONUkutengera magawo maukonde awa (mwachitsanzo, delimiters, mphamvu mumalowedwe, preset equalization kuchedwa) ndi kusamutsidwa kwa siriyo chiwerengero boma (O3).
Seri-Number-state (O3)
TheOLTimatumiza mauthenga a Serial-Number Request kwa onseONUm'malo kuti apeze zatsopanoONUkomanso manambala awo a seri. Pamene aOLTamapeza chatsopanoONU, ndiONUamadikiraOLTkuwapatsa iwoONU-ID. TheOLTimagawira ONU-ID kudzera mu uthenga wa Assign_ONU-ID.ONUamasamutsidwa kupita ku state state (O4) atalandira ONU-ID.
Ranging-state (O4)
Zizindikiro zopatsirana kuchokera kumitundu yosiyanasiyanaONUziyenera kugwirizanitsidwa pamene iwo afika paOLT, zomwe aliyenseONUimafunika kuchedwa kwa kufanana, komwe kumayesedwa mu chikhalidwe chosiyana. TheONUamalandira uthenga wa Ranging_Time ndikusunthira kumalo ogwirira ntchito (O5).
Operation-state (O5)
Onusm'dera lino akhoza kutumiza deta ndi PLOAM mauthenga pansi pa ulamuliro waOLT,ndiONUm'dera lino akhoza kukhazikitsanso maulumikizidwe ena ngati pakufunika. Pamene kuyambira bwino, zonseONUtumizani ma siginecha molingana ndi kuchedwa kwawo kofanana kuti musunge kulumikizana kwa chimango cha uplink. Zizindikiro zotumizidwa ndi zosiyanasiyanaONUadzafika kuOLTmosiyana, koma chizindikiro chilichonse chidzawonekera ndendende pomwe chiyenera kuwonekera mu uplink frame. Imitsani theONUmu ntchito: Pa ntchito yachibadwa, ndiOLTakhoza kuyimitsaONUkutumiza ma sign kuti mupeze nambala yotsatizana ya enaONUkapena kuyeza mtunda wa enaONU. TheOLTimasiya kuvomereza bandwidth yonse ya uplink kwa nthawi, ndiONUamagwira ntchito mwachizolowezi. Popeza palibe chilolezo cholandilidwa, palibe chizindikiro chomwe chidzaperekedwa, zomwe zimapangitsa kuti pakhale bata, kotero kutiOLTamapanga zonseONUkuyimitsa kutumiza zizindikiro.
POPUP-state (O6)
TheONUm'malo ogwiritsira ntchito (O5) amalowa m'derali pamene azindikira LOS kapena LOF. M'chigawo chino, aONUnthawi yomweyo amasiya kutumiza ma sign, kotero kutiOLTadzazindikira alamu ya LOS ya iziONU. Pamene ODN CHIKWANGWANI chasokonezedwa, ambiriONUadzalowa m'dziko lino. Pofuna kudalirika kwa netiweki, imodzi mwa njira zotsatirazi iyenera kugwiritsidwa ntchito:
Ngati kusintha kwa alonda kwayatsidwa, zonseONUadzaterokusinthakupita ku standby fiber. Panthawi imeneyi, zonseONUadzachita kuyambira kachiwiri, zomweOLTimatumiza uthenga wa Broadcast POPUP kuti udziwitse onse a ONU kuti alowe m'chigawo choyambira (O4).
Ngati palibe kusintha kwachitetezo komaONUali ndi mphamvu zoteteza mkati, ndiOLTimatumiza uthenga wa Directed POPUP kuti udziwitseONUkulowa m'malo ogwirira ntchito (O5). Pamene aONUakulowa mu boma la O5, aOLTkufunika kuzindikiraONUchoyamba ndiyeno
Bwezerani ntchito za ONU. Ngati ndiONUsichichira ku LOS kapena LOF, theONUsadzalandira uthenga wa Broadcast POPUP kapena uthenga wa Directed POPUP, ndiONUimalowa m'malo oyamba (O1) pambuyo pa nthawi ya TO2.
Emergency-Stop-state (O7)
Pamene aONUamalandira uthenga wa Disable_Serial_Number ndi njira ya "Disable", theONUamalowa m'malo oyimitsa mwadzidzidzi (O7) ndikuzimitsa laser. Mu State O7, ndiONUamaletsedwa kutumiza ma sign. Ngati ndiONUsichilowa bwino mu boma la O7 ndiOLTakhoza kupitiriza kulandira chizindikiro chotumizidwa ndiONU, ndiOLTipanga alamu ya Dfi. Pamene vuto laONUyathetsedwa, ndiOLTimatumiza Disable_Serial_Number meseji ndi "Yambitsani" njira kuti muyambitseONU. Atalandira uthengawo, aONUimalowa mu standby state (O2), ndipo magawo onse (kuphatikiza nambala yotsatizana ndi ONU-ID) adzayang'ananso.
Zomwe zili pamwambazi za chidziwitso ndizokhudza ndondomeko yofotokozeraONUudindo ndi ma activation obwera ndi Shenzhen HDV Phoelectron Technology LTD., amene ndi wopanga okhazikika pa zipangizo zoyankhulirana monga katundu wake waukulu. Zida zogwirizana ndi izi: OLTONU/ IntelligentONU/ ACONU/ FiberONU/ CATVONU/ GPONONU/XPONONU/OLTzida/OLTSinthani/GPONOLT/ EPONOLTndi zina zotero, alandileni ogwiritsa ntchito kuti abwere ku zokambirana zamalonda.
