Uhlelo lwe-PON lusebenzisa ubuchwepheshe bokuhlukanisa isikhathi sokuphindaphinda ekuqondeni kwe-uplink, futhi i-ONU ithumela ama-datagrams ekuqondeni kwe-uplink ngokuvumelana nesitembu sesikhathi esinikezwe i-OLT.Uma i-ONU ikhipha ukukhanya ngaphandle kokunikeza isitembu sesikhathi, izongqubuzana namasignali okukhishwa yenye i-onus, okuzothinta ukuxhumana okuvamile kwenye i-onus noma yonke i-onus.Isitembu sesikhathi sibonisa ukuthi i-ONU ekhohlakele ayithumeli amasignali abonakalayo phezulu.I-onus eqinile ihlukaniswe yaba izinhlobo ezimbili, eyodwa ukukhanya okungahleliwe kanti enye ukukhanya okude.Ukuqinisekisa ukusebenza okuvamile kwesistimu ye-PON futhi ugweme ukudideka ohlelweni ngenxa yokuvela kwe-onus enamandla ohlelweni.IHuawei inomsebenzi wokuthola ama-ONU akhohlakele.Lona umsebenzi kusistimu ye-PON ebheka amatheminali angakuthumeli ukukhanya ngesikhathi esifanele bese ewahlukanisa.
Umsebenzi wokuthola i-ONU onamandla uhlanganisa izindlela ezimbili:
1. Ukutholwa kwe-OLT
Lapho i-OLTithola i-ONU ekhipha isikhathi eside, ithumela umyalelo wokuhlukanisa i-ONU ngokwe-ONU etholiwe.Ngokuvamile, umsebenzi wokuthola we-OLT usetshenziswa ku-ONU ekhipha isikhathi eside, futhi kuba nephutha elithile ekuhlonzweni kwe-ONU ephuma ngokungahleliwe.Ngokuzenzakalelayo, i-OLT ivala umsebenzi wokutholwa kwe-OLT.Ngalesi sikhathi, i-OLT ingathola ukuthi ingabe kukhona onus okhipha isikhathi eside kulayini we-PON.Kodwa-ke, ingahlulela kuphela ukuthi ingabe kukhona onus okhipha isikhathi eside ngaphansi kwembobo ye-PON, futhi ayikwazi ukuthola umsebenzi othile.Kufanele ithole i-onus eqinile ngokunqanyulwa kwefayibha esizeni.IOLTingakwazi ukubona i-ONU ethize ekhipha ukukhanya ngaphansi kwembobo ye-PON futhi ingalawula ukude ukuze ivale amandla okudlulisela emojula ye-ONU optical;Umbandela ukuthi wonke ama-ONU angaphansi kwesixhumi esibonakalayo se-PON ayadingeka ukuze akwazi ukuhlaziya umlayezo we-downlink ploam futhi aphendule ngendlela efanele.
2. I-ONU bit
Lapho i-I-ONUithola ukuphuma kokukhanya okude, izokwehlukanisa ngokuzenzakalela.Lo msebenzi ungathola i-ONU ngokukhipha ukukhanya okude nokuphuma kokukhanya okungahleliwe.
3. Imikhawulo yokuphatha inethiwekhi ekutholeni i-onus eqinile
Ngokwalezi zimiso ezingenhla, abaphathi benethiwekhi badinga ukuhlangabezana nezimo ezimbili lapho bethola i-onus enzima.Enye iwukuthi umsebenzi wokuthola uvuliwe, kanti enye iwukuthi yonke i-onus ngaphansi kwembobo ye-PON ingahlaziya umlayezo we-downlink ploam futhi iphendule ngendlela efanele.
Ngakho-ke, abaphathi benethiwekhi banethuba elithile lokuthola ngisho nokuhlonza ulwazi lwemishini yesikhohlakaliI-ONUku-ONU eqinile ekhipha isikhathi eside, ebavumela ukuthi bathole indawo ye-ONU ngokuhlanganyela nokuphathwa kwempahla;Ku-onus ekhohlakele ekhipha ukukhanya ngezikhathi ezithile, ayikho indlela enhle yokuthola nokubeka i-onus.
Indlela yokucubungula eyinhloko ye-onus ekhohlakele iseyisivivinyo sokudonsa isinyathelo ngesinyathelo ku-splitter ye-optical, ngakho-ke kubaluleke kakhulu ukuvuselela ulwazi lokuphathwa kwempahla.
Okungenhla incazelo yolwazi yokuthi "i-ONU ekhohlakele yaba khona kanjani" ilethwe kuwe yi-Shenzhen HDV photoelectric Technology Co., Ltd. Imikhiqizo yokuxhumana ekhiqizwa inkampani ihlanganisa;
Izigaba zamamojula: amamojula we-fiber optical, Amamojula we-Ethernet, amamojula we-fiber optical transceiver, amamojula okufinyelela kwefiber optical, Amamojula we-SSFP optical, futhiImicu ye-Optical SFP, njll.Isigaba se-ONU: EPON ONU, AC ONU, i-fiber optical ONU, I-CATV ONU, I-GPON ONU, XPON ONU, njll.
Isigaba se-OLT: Ukushintsha kwe-OLT, I-GPON OLT, I-EPON OLT, ukuxhumana OLT, njll.
Imikhiqizo yemojula engenhla ingahlinzeka ngosekelo lwezimo zenethiwekhi ezahlukahlukene.Ithimba le-R&D elichwepheshile neliqinile lingasiza amakhasimende anezinkinga zobuchwepheshe, futhi ithimba lebhizinisi elicabangayo nelichwepheshile lingasiza amakhasimende ukuthi athole amasevisi ekhwalithi ephezulu ngesikhathi sokubonisana kwangaphambilini nomsebenzi wangemuva kokukhiqiza.Siyakwamukela kuXhumana nathinganoma yiluphi uhlobo lombuzo.