Dab tsi yog passive kho qhov muag network
Passive Optical Network (PON)yog cov ntshiab tshaj tawm network, uas zam kev cuam tshuam hluav taws xob thiab cuam tshuam hluav taws xob los ntawm cov cuab yeej sab nraud, txo tus nqi tsis ua haujlwm ntawm cov kab thiab cov cuab yeej sab nraud, txhim kho txoj kev ntseeg siab, thiab txuag nqi. , Yog qhov xav tau technology ntev hauv xov tooj ntawm lub koom haum saib xyuas nyiaj txiag. Lub lag luam transparency ntawm PON yog qhov zoo, thiab nyob rau hauv hauv paus ntsiab lus, nws yuav siv tau rau cov cim ntawm txhua tus qauv thiab tus nqi. Tshwj xeeb, ATM-based passive optical network (APON) tuaj yeem ua rau siv cov kev sib txuas hauv nruab nrab thiab kev suav ntau yam ntawm ATM, ua ke nrog cov kev sib koom ntawm passive splitters ntawm optical fiber thiab optical kab terminals, yog li tus nqi cia siab yuav muaj ntau dua li tsoos Circuit Court switching. Cov theem pib PDH / SDH nkag mus siv tau yog 20% -40% qis dua.
Kev tsim kho kev lag luam ntawm APON yog nqis tes rau hauv theem, thiab thawj theem yog feem ntau yog VP siab kab ua lag luam. Piv nrog cov kab kev ua haujlwm zoo tib yam, VP muab siab rau cov kab kev pabcuam los ntawm APON muaj cov nqi qis, me me, txuag hluav taws xob, txhim khu kev qha thiab ruaj khov, thiab qee yam zoo hauv kev ua tau zoo-tus nqi piv. Qhov thib ob kauj ruam yog kom paub meej thawj thiab pawg pab pawg sib koom tes sib pab, thiab muab kev sib koom sib koom ntawm cov khoom lag luam thiab cov lag luam xov tooj thiab cov ntaub ntawv. Kauj ruam thib peb yog kom paub Ethernet interface thiab muab kev pabcuam nkag mus rau Is Taws Nem thiab VLAN kev pabcuam. Tom qab ntawd, nws yuav maj mam nthuav tawm mus rau lwm cov kev pabcuam thiab dhau los ua ib tus neeg siv cov khoom siv tau zoo hauv lub network.
Passive optical network (PON) yog hais txog kev faib khoom hluav taws xob (ODN) nruab nrab ntawm OLT (kab davhlau kho qhov muag) thiab ONU (kho qhov muag network)tsis muaj ib qho khoom siv hluav taws xob zoo.
