Thawj-xeev (O1)
ONU nyob rau hauv lub xeev no nyuam qhuav tau powered thiab tseem nyob rau hauv LOS / LOF.Thaum cov dej ntws tau txais, LOS thiab LOF tshem tawm, thiab covONUtxav mus rau lub xeev standby (O2).
Standby-lub xeev (O2)
CovONUnyob rau hauv lub xeev no tau txais mus rau downstream ntws thiab tos rau lub network tsis tau txais.Thaum ONU tau txais cov lus Upstream_Overhead, teeb tsa ONU raws li cov kev tsis sib haum xeeb no (piv txwv li, delimiters, hom fais fab, preset equalization ncua) thiab pauv mus rau serial tooj xeev (O3).
Serial tooj-lub xeev (O3)
CovOLTxa Serial-Number Thov cov lus rau txhua ONUs hauv lub xeev ntawd kom pom ONUs tshiab nrog rau lawv cov lej Serial.Thaum lubOLTpom qhov tshiabONU, covONUtos rau lubOLTlos muab nws ONU-ID.CovOLTmuab ONU-ID los ntawm Assign_ONU-ID cov lus.ONU hloov mus rau ntau lub xeev (O4) tom qab tau txais ONU-ID.
Ranging xeev (O4)
Cov teeb liab kis tau los ntawm ntau ONUs yuav tsum tau synchronized thaum lawv tuaj txog ntawmOLT, rau qhov twgONUxav tau kev sib npaug ncua, uas yog ntsuas nyob rau hauv lub xeev.ONU tau txais cov lus Ranging_Time thiab txav mus rau lub xeev ua haujlwm (O5).
Kev ua haujlwm-xeev (O5)
Onus hauv lub xeev no tuaj yeem xa cov ntaub ntawv thiab PLOAM cov lus nyob rau hauv kev tswj hwm ntawm OLT, thiab ONUs hauv lub xeev no tuaj yeem tsim lwm yam kev sib txuas raws li qhov xav tau.Thaum qhov kev sib tw ua tiav, tag nrho ONUs xa cov teeb liab raws li lawv qhov sib npaug ncua kom tswj tau qhov synchronization ntawm uplink ncej.Cov teeb liab xa los ntawm ONUs sib txawv yuav tuaj txog ntawmOLTcais, tab sis txhua lub teeb liab yuav tshwm sim raws nraim qhov twg nws yuav tsum tshwm sim nyob rau hauv lub uplink ncej.Suspend lubONUHauv kev ua haujlwm: Thaum lub sijhawm ua haujlwm ib txwm muaj, OLT tuaj yeem ncua ONU kom xa cov cim kom tau txais cov lej ntawm lwm ONUs lossis ntsuas qhov deb ntawm lwm ONUs.CovOLTnres tso cai tag nrho cov uplink bandwidth rau ib lub sij hawm, thiab covONUua haujlwm li qub.Txij li thaum tsis tau txais kev tso cai, tsis muaj teeb liab yuav raug xa mus, ua rau lub sijhawm nyob ntsiag to, yog li OLT ua rau tag nrho ONUs ncua kev xa cov teeb liab.
POPUP-lub xeev (O6)
CovONUnyob rau hauv lub xeev kev khiav hauj lwm (O5) nkag mus rau lub xeev no thaum nws pom los yog LOF.Nyob rau hauv lub xeev no, ONU tam sim ntawd nres xa cov teeb liab, thiaj li hais tias covOLTyuav ntes lub tswb ntawm qhov noONU.Thaum ODN fiber ntau cuam tshuam, ntau ONUs yuav nkag mus rau hauv lub xeev no.Rau kev ntseeg tau ntawm lub network, ib qho ntawm cov hauv qab no yuav tsum tau siv:
Yog tias kev tiv thaiv kev hloov pauv tau qhib, tag nrho ONUs yuav hloov mus rau qhov chaw tos txais fiber ntau.Lub sijhawm no, tag nrho ONUs yuav rov ua dua, uas OLT xa cov lus tshaj tawm POPUP los qhia rau txhua ONUs kom nkag mus rau hauv lub xeev (O4).
Yog tsis muaj kev tiv thaiv switching tab sisONUmuaj peev xwm tiv thaiv sab hauv, lubOLTxa ib Directed POPUP cov lus ceeb toom rauONUnkag mus rau lub xeev ua haujlwm (O5).Thaum ONU nkag mus rau O5 lub xeev, lubOLTyuav tsum tau ntes covONUua ntej thiab tom qab ntawd
Restore ONU qhov kev pabcuam.Yog tiasONUtsis rov qab los ntawm LOS lossis LOF, ONU yuav tsis tau txais cov lus tshaj tawm POPUP lossis cov lus qhia POPUP, thiab ONU nkag mus rau lub xeev pib (O1) tom qab TO2 lub sijhawm.
Emergency-Stop-state (O7)
Thaum lubONUtau txais cov lus Disable_Serial_Number nrog qhov kev xaiv "Disable", ONU nkag mus rau lub xeev nres xwm ceev (O7) thiab tua lub laser.Hauv xeev O7, ONU raug txwv tsis pub xa cov cim.Yog tiasONUtsis ntse nkag mus rau lub xeev O7 thiab covOLTtseem tuaj yeem tau txais cov teeb liab xa los ntawm ONU, OLT yuav tsim lub tswb Dfi.Thaum qhov txhaum ntawm ONU raug daws, qhovOLTxa Disable_Serial_Number cov lus nrog "Enable" xaiv los qhib ONU ntawd.Tom qab tau txais cov lus, lubONUnkag mus rau hauv lub xeev standby (O2), thiab tag nrho cov tsis tau (xws li tus lej ua ntu zus thiab ONU-ID) yuav raug kuaj xyuas dua.
Cov ntsiab lus saum toj no ntawm kev paub yog hais txog cov txheej txheem piav qhia ntawmONUxwm txheej thiab ua kom muaj kev coj los ntawm Shenzhen HDV Phoelectron Technology LTD., uas yog cov chaw tsim khoom tshwj xeeb hauv cov khoom siv sib txuas lus raws li nws cov khoom tseem ceeb.Cov khoom siv muaj feem xyuam nrog: OLT ONU / IntelligentONU / AC ONU / Fiber ONU / CATV ONU / GPON ONU / XPONONU / OLT khoom / OLT Hloov / GPON OLT / EPONOLTthiab lwm yam, zoo siab txais tos cov neeg siv khoom tuaj rau kev sib tham txog cov khoom.
