Chiwerengero choyambiriraus (O1)
TheONUM'malo awa wangoyamba kumene ndipo akadali ku LOS / LOF. Mtsinje ukangolandiridwa, LOS ndi LOF zimachotsedwa, ndipoONUimasunthira ku standby status (O2).
Standby status(O2)
TheONUza udindo uwu walandira kunsi kwa mtsinje, kuyembekezera kulandira magawo maukonde.Pamene ndiONUimalandira uthenga wa Upstream_Overhead, imapanga kasinthidwe koyenera (mwachitsanzo, mawonekedwe a malire, mphamvu yamagetsi, kuchedwa kwadongosolo) ndikusamutsira ku chiwerengero cha nambala (O3).
Siri Nambala (O3)
TheOLTimatumiza mauthenga a Serial-Number Request kwa onseONUm'malo kuti apeze zatsopanoONUkomanso serial number yawo.Pamene theOLTamapeza chatsopanoONU, ndiONUamadikiraOLTkuti aONU-ID.OLTkudutsa Mauthenga a Assign_ONU-ID akutanthauza kufanana kwa ONU-ID. Pambuyo pakeONUamapezaONU-ID, imasamutsidwa kupita kumalo oyambira (O4).
Ranging status (O4)
ZosiyanaONUkutumiza zizindikiro ayenera kukhala synchronized akafika paOLT, kuti aliyenseONUikufunika kuchedwetsa kofanana, ndipo chizindikiro ichi chimayesedwa mumayendedwe osiyanasiyanaONUimalandira uthenga wa Ranging_Time ndikusunthira kumalo othamanga (O5).
Udindo wothamanga (O5)
TheONUm'malo awa mutha kutumiza data ya uplink ndi mauthenga a PLOAM pansi pa ulamuliro waOLT, ndiONUmu udindo uwu angathenso kukhazikitsa maulumikizidwe ena monga zofunikira.Pamene kuyambira bwino, onseONUamatumizidwa molingana ndi kuchedwa kwawo kwa nthawi yofananira kuti asunge mawonekedwe a uplink. Zizindikiro zotumizidwa ndi osiyanasiyanaONUadzafika kuOLTmosiyana, koma chizindikiro chilichonse chimawonekera ndendende pomwe chiyenera kuwonekera mu uplink frame.Imani paONUmu ntchito: Pa ntchito yachibadwa, ndiOLTzikhoza kuyambitsaONUkuyimitsa chizindikiro kuti mupeze nambala yachinsinsi ya winayoONUkapena mtunda winayoONU.OLTimasiya kupereka chilolezo kwa uplink bandwidth kwakanthawi,ONUamagwira ntchito mwachizolowezi, ndipo salandira chilolezo, kupanga nthawi yabata, koteroOLTzimayambitsa zonseONUkuyimitsa chizindikiro.
POPUP Status (O6)
Izi ndi analowa pameneONUmu mawonekedwe opangira (O5) amazindikira LOS kapena LOFONUnthawi yomweyo amasiya kutumiza chizindikiro, kotero kutiOLTadzazindikira alamu ya LOS kwaONU.Pamene CHIKWANGWANI cha ODN chimasokonekera, ambiriONUadzalowa m'derali, poganizira kudalirika kwa maukonde, mwa njira izi:
Ngati inversion ya chitetezo yayatsidwa, zonseONUadzakhala inverted ku zosunga zobwezeretsera CHIKWANGWANI.Panthawiyi, onseONUadzayambiranso, ndipo iziOLTimatumiza uthenga wa Broadcast POPUP kuti udziwitse onseONUkulowa mulingo woyambira (O4).
Ngati palibe inversion chitetezo komaONUali ndi mphamvu zoteteza mkati, ndiOLTimatumiza uthenga wa Directed POPUP kuti udziwitseONUkulowa kuthamanga udindo (O5) .Pamene theONUamalowa mu mawonekedwe a O5, aOLTkufunika kuzindikiraONUchoyamba ndiyeno Bwezerani malonda aONU.Ngati aONUsichichira ku LOS kapena LOF, theONUsadzalandira uthenga wa Broadcast POPUP kapena Directed POPUP, ndipo pambuyo pa nthawi ya TO2, aONUamalowa m'malo oyamba (O1).
State Emergency Stop State (O7)
Pamene aONUamalandira uthenga wa Disable_Serial_Number ndi njira ya "Disable", theONUamalowa m'malo odzidzimutsa (O7) ndikuzimitsa laser.Mu boma la O7, theONUndikoletsedwa kutumiza zizindikiro.NgatiONUsichilowa bwino mu boma la O7, ndiOLTakhoza kupitiriza kulandira zizindikiro kuchokera kuONU, ndiOLTamapanga alamu ya DfiONUakulephera,OLTimatumiza Disable_Serial_Number uthenga ndi Yambitsani ” njira yoyambitsaONU.ONUamalandira uthengawo ndikulowa standby (O2) ndipo magawo onse (kuphatikiza nambala ya serial ndi ONU-ID) amawunikidwanso.