Yuav ua li cas sib txawv ntawm OLT, ONU, ODN, thiab OTT hauv Optical nkag tes hauj lwm?
Aug 04, 2025|
Yuav ua li cas sib txawv ntawm OLT, ONU, ODN, thiab OTT hauv Optical nkag tes hauj lwm?
Optical Nkag Network siv teeb raws li cov xov tooj sib kis tau yooj yim, hloov cov xov tooj tooj liab txuas rau txhua tsev neeg. Kev nkag mus kho kho kho kho kho kho kho qhov muag tsis pub muaj lwm yam ntawm peb ntu: Chav Optical Terminal (OLT), lub chaw muag khoom siv kho qhov muag (OSULATE faib hluav taws xob (ODN). Ntawm cov no, OLT thiab ONU yog cov tseem ceeb ntawm kev kho qhov muag nkag mus.
OLT yog dab tsi?
OLT sawv rau cov kab kho kab xaus. Tus olt yog lub telecom cations ua hauj lwm siv cov cuab yeej siv los txuas cov kab ke fiber ntau. Nws lub luag haujlwm yog sib npaug rau ib qho hloov lossis router hauv kev sib txuas lus ib txwm muaj, ua yeeb yam li cov cuab yeej sib txuas lus sab nraud thiab cov lej sab hauv network / ingress point. Nws tau muab tso rau ntawm lub chaw haujlwm nruab nrab. Nws cov haujlwm tseem ceeb tshaj plaws yog cov tsheb khiav tsheb khiav tsheb, thiab muab cov neeg siv khoom siv rov qab kho dua tshiab (Pon) interface thaum ua haujlwm sib txuas. Tsuas yog muab tso, nws ua ob lub luag haujlwm tseem ceeb: ntws los, nws muab kev nkag tau rau lub pon network; DownStream, nws xa cov ntaub ntawv nrhiav tau los ntawm ODN network faib rau txhua tus neeg siv onu davhlau ya nyob twg.
Dab tsi yog onu?
Onu sawv rau lub chaw ua haujlwm nruab nrab kho qhov muag. ONU muaj ob txoj haujlwm tseem ceeb: nws xaiv tau tshaj tawm cov xov xwm xa los ntawm OLT, thiab yog tias nws yuav tsum tau txais cov ntaub ntawv tshwj xeeb, nws teb rau OLT; Nws sau thiab buffers cov ntaub ntawv uas cov neeg siv yuav tsum xa, thiab kis cov ntaub ntawv Buffered no rau cov olt sab thaum nws raug xa mus xa tawm qhov rai.
Hauv kev sib txawv FTTX (Fiber rau X) Kev Xa Khoom Siv, ONU Installation Qhov Txawv:
FTTC (Fiber rau ntawm ntug kev): ONU yog muab tso rau hauv txoj kev txee lossis txee-sab txee.
FTB (fiber ntau rau lub tsev): ONU yog muab tso rau hauv lub tsev lub tsev kab ntawv kaw lossis lub thawv dai khaub ncaws.
Ftth (Fiber rau hauv tsev): ONU yog muab tso rau hauv cov neeg siv hauv tsev.
Dab tsi yog Ont?
Ont sawv ntsug rau kho qhov muag network. Nws yog chav kawm kawg hauv FTH, feem ntau yog hu ua "kho qhov muag modem," zoo ib yam li "Modem" hauv XDSL Technology. Cov ont yog lub davhlau ya nyob twg lub davhlau ya nyob twg ntawm qhov kawg-neeg siv chaw nyob, uas tej zaum yuav muaj lwm yam network ntawm nws thiab kawg kawg-neeg siv. ONT yog ib feem ntawm ONU (lossis, hauv FTTH cov xwm txheej, ONU hauv tsevyogONT).
Dab tsi yog qhov kev sib raug zoo ntawm ONU thiab OLT?
Lub OLT yog txoj kev tswj hwm kawg, thaum lub sij hawm onu yog lub davhlau ya nyob twg (cov neeg siv) xaus. Cov kev cai ntawm cov kev pab cuam ntawm onu yog txhua yam ua dhau los ntawm kev teeb tsa tau xa tawm ntawm OLT; Lawv muaj ib tug master-qhev kev sib raug zoo. Ib OLT tuaj yeem txuas rau ntau yam onus los ntawm kev kho qhov muag.
Dab tsi yog odn?
ODN sawv rau qhov kho qhov muag springment network. Nws yog lub cev kho qhov muag cov channel nruab nrab ntawm OLT thiab ONUS. Nws lub luag haujlwm tseem ceeb yog kom ua tiav qhov kev sib kis tsis txaus ntseeg ntawm kev tawm dag zog. Qhov ODN feem ntau muaj kho qhov muag roj teeb, kho qhov muag kho qhov muag (qhov tseem ceeb tshaj plaws), thiab txuas cov khoom siv txhawb nqa los txhim kho thiab txuas cov khoom siv no.
Qhuas Vajtswv kho qhov muag kho qhov muag muab faib cov qhua nrog cov khoom siv ftth thiab cov kev daws teeb meem. Peb lub tuam txhab yog lub ntiaj teb muaj txiaj ntsig OEM / ODM cov chaw tsim khoom ntawm passive kho qhov muag sib txuas lus. Peb ua tshwj xeeb hauv kev muab cov kev pabcuam ntau lawm, nrog rau cov qauv siv, thiab tsim khoom ntawm cov khoom siv kho tshiab rau kev sib txuas lus kho qhov muag.