ONUtsanangudzo
ONU (Optical Network Unit) inodaidzwa kunzi optical network unit uye ndeimwe yemidziyo yakakosha mune optical fiber access network (FTTH).Inowanikwa kumagumo emushandisi uye ine basa rekushandura masaini masaini kuita masaini emagetsi uye kugadzirisa masaini emagetsi kuita mafomati ekufambisa data kuti awane yakakwirira-yekukurumidza data yevashandisi.
XPON 4GE WIFI CATV USB ONU CX51141R07C
1.ONU mudziyo mabasa
TheONUmudziyo une zvinotevera mabasa:
Basa remuviri: Chigadzirwa cheONU chine optical / electrical conversion function, iyo inogona kushandura iyo yakagamuchirwa chiratidzo chemagetsi mumagetsi emagetsi, uye panguva imwechete inoshandura chiratidzo chemagetsi muchiratidzo chekutsvaga kwekutumira.
Zvinonzwisisika basa: TheONUmudziyo une basa rekubatanidza, iro rinogona kuunganidza yakaderera-kumhanya data nzizi dzevazhinji vashandisi mune yakakwirira-kumhanya data rwizi.Iyo ine zvakare protocol yekushandura basa, iyo inogona kushandura rwizi rwe data kuita yakakodzera protocol fomati yekufambisa.
2.ONU protocol
ONUmidziyo inotsigira akawanda mapuroteni, anosanganisira Ethernet protocol, IP protocol, yemuviri layer protocol, nezvimwe, sezvinotevera:
Ethernet protocol: ONU michina inotsigira Ethernet protocol uye inogona kuona data encapsulation, kutapurirana uye decapsulation.
IP protocol: ONU midziyo inotsigira IP protocol uye inogona kuona data encapsulation, kutapurirana uye decapsulation.
Physical layer protocol: ONU midziyo inotsigira akasiyana siyana emuviri layer maprotocol, sengeEPON, GPON, nezvimwewo, izvo zvinogona kuona kutapurirana uye modulation uye demodulation yemaziso masaini.
3.ONU kunyoresa maitiro
Maitiro ekunyoresa emidziyo yeONU anosanganisira kunyoresa kwekutanga, kunyoreswa nguva nenguva, kusarudzika kubata, nezvimwe, sezvinotevera:
Kunyoreswa kwekutanga: Kana iyo ONU mudziyo wabatidzwa uye watanga, ichatangwa uye kunyoreswa kuburikidza neOLT(Optical Line Terminal) mudziyo kuti upedze kuzviyedza uye parameter kumisikidzwa kwechishandiso.
Kunyoreswa nguva nenguva: Panguva yekushanda kwakajairika, mudziyo weONU unopota uchitumira zvikumbiro zvekunyoresa kumudziyo weOLT kuchengetedza hukama hwekutaurirana neOLT mudziyo.
Kunze kwekubata: Kana iyo ONU mudziyo yaona mamiriro asina kujairika, sekutadza kwetiweki, kutadza kwekubatanidza, nezvimwe, inotumira ruzivo rwealarm kuneOLTmudziyo kuti ufambise kugadzirisa matambudziko panguva.
4.ONU data transmission method
Nzira dzekufambisa data dzemidziyo yeONU dzinosanganisira kutapurirana kweanalogi uye masaini edhijitari pamwe nekuchinja kwechiratidzo uye dhizaini, sezvinotevera:
Analog chiratidzo chekufambisa: Iyo ONU mudziyo unoendesa odhiyo yemushandisi, vhidhiyo uye imwe analogi data kune mushandisi-yekupedzisira mudziyo kuburikidza neanalogi chiratidzo chekufambisa.
Digital chiratidzo chekufambisa: ONU midziyo inoendesa data remushandisi kune mutengi mudziyo kuburikidza nedhijitari chiratidzo chekufambisa.Digital masiginecha anofanirwa kuvharwa asati atumirwa.Yakajairika encoding nzira dzinosanganisira ASCII kodhi, binary kodhi, nezvimwe.
Signal modulation uye demodulation: Panguva yekufambisa kwemasaini edhijitari, ONU michina inoda kuchinjisa masaini edhijitari uye kushandura masaini edhijitari kuita masaini mafomati akakodzera kutapurirana muchiteshi, senge Ethernet data mafuremu.Panguva imwecheteyo, iyo ONU mudziyo inodawo kudhiza iyo yakagamuchirwa chiratidzo uye kushandura iyo siginecha kudzokera kune yekutanga dhijitari siginecha fomati.
5.Kudyidzana pakati peONU neOLT
Kudyidzana pakati pemidziyo yeONU neOLT midziyo inosanganisira kuendesa data uye kutonga nhamba kugadzirisa, sezvinotevera:
Kuendesa data: Kufambiswa kwedata kunoitwa pakati peONU midziyo neOLT michina kuburikidza netambo dzemaziso.Munzira yekumusoro, mudziyo weONU unotumira data remushandisi kune OLT mudziyo;mugwara rezasi, mudziyo weOLT unotumira data kune ONU mudziyo.
Kudzora kugadzirisa nhamba: Kuchinjisa kuendesa data kunoonekwa pakati peONU mudziyo neOLT mudziyo kuburikidza nekudzora nhamba kugadzirisa.Kudzora ruzivo rwenhamba kunosanganisira ruzivo rwewachi, mirairo yekudzora, nezvimwe. Mushure mekugamuchira ruzivo rwenhamba yekudzora, mudziyo weONU uchaita mashandiro anoenderana nemirairo, sekutumira uye kugamuchira data, nezvimwe.
6.ONU kuchengetedza uye kutarisira
Kuti uve nechokwadi chekushanda kwakajairwa kwemidziyo yeONU, kuchengetedza uye manejimendi zvinodiwa, sezvinotevera:
Kugadzirisa matambudziko: Kana mudziyo weONU ukatadza, kugadzirisa dambudziko kunofanirwa kuitwa nenguva.Kukanganisa kwakajairika kunosanganisira kutadza kwemagetsi, kutadza nzira yekutadza, network kukundikana, etc. Vashandi vekuchengetedza vanofanirwa kutarisa mamiriro emidziyo panguva yakakodzera, kuona rudzi rwechikanganiso uye kugadzirisa.
Kugadziriswa kweParameter: Kuti uve nechokwadi chekushanda kwechigadzirwa uye kugadzikana kwetiweki, zviyero zveONU device inoda kugadziriswa.Kugadziriswa kweParameter kunosanganisira simba remaziso, simba rekutumira, kugamuchira kunzwa, etc. Vashandi vekuchengetedza vanofanira kugadzirisa maererano nemamiriro ezvinhu chaiwo kuti vave nechokwadi chekushanda kwechigadzirwa.
Chengetedzo manejimendi: Kuti uve nechokwadi chekuchengetedzwa kwenetiweki, michina yeONU inoda kuchengetedzwa zvakachengeteka.Vashandi vekuchengetedza vanofanirwa kuseta mvumo yekushandisa yechishandiso, mapassword ekutungamira, nezvimwe, uye kuchinja mapassword nguva nenguva.Panguva imwecheteyo, njodzi dzekuchengetedza dzakadai sekurwiswa kwehacker uye hutachiona hwehutachiona hunofanirwa kuchengetedzwa.
Nekugadzirisa nemazvo nekugadzirisa iyo ONU's network firewall uye data encryption mabasa, mushandisi network kuchengetedza inogona kunyatso vandudzwa uye netiweki kurwiswa kunodzivirirwa.Paunenge uchive nechokwadi chekuchengetedzwa kwetiweki, iwe unofanirwawo kutarisisa kugara uchivandudza marongero ekuchengetedza kuti utarise nekuwedzera kuoma uye kunogara kuchichinja network kutyisidzira.
Nguva yekutumira: Sep-21-2023
