Tam sim no, nyob rau hauv cov nqe lus ntawm optical fiber nkag tau network technology, nqaim band nkag tau maj mam hloov los ntawm broadband nkag, thiab nws thiaj li ua tiav fiber ntau hauv tsev. Lub broadband optical fiber ntau ntawm kev nkag mus rau hauv lub network tau dhau los ua qhov tsis tseem ceeb, thiab PON thev naus laus zis yuav dhau los ua qhov chaw tshaj lij ntawm kev siv broadband network yav tom ntej vim nws cov kev pabcuam ntau, kev nqis peev tsawg thiab kev saib xyuas yooj yim.
Dab tsi yog fiber nkag network?
Optical fiber access network yog hais txog kev nkag mus rau hauv lub network uas qhov nruab nrab kis tau tus mob yog ib qho khoom siv fiber ntau. Optical fiber nkag network tuaj yeem muab faib ua ob pawg: active optical networks (AON, Active Optical Network) thiab passive optical networks (PON, Passive Optical Network).
Active optical network tau muab faib ua AON raws li SDH thiab AON raws li PDH;
Passive optical tes hauj lwm yuav muab faib mus rau hauv nqaim band PON thiab broadband PON.
Dab tsi yog lub luag haujlwm ntawm kev nkag mus rau network ua si hauv kev tsim network?
Cov ntaub ntawv network yog tsim los ntawm lub hauv paus caj dab network, lub nroog cheeb tsam network, kev nkag tau network, thiab cov neeg siv khoom siv network. Lub network nkag mus yog nyob ntawm tus choj ntawm lub nroog cheeb tsam network / nraub qaum network.
Tam sim no, kev tshawb fawb thiab thev naus laus zis tau nce zuj zus los ntawm kev nce qib, thiab ntau cov ntaub ntawv hluav taws xob tau tsim tawm tas li. Nrog rau kev lag luam thoob ntiaj teb kev lag luam thiab kev nrawm ntawm kev tshaj xov xwm hauv zej zog, Is Taws Nem tau nrov heev, cov ntaub ntawv cov kev pabcuam tau loj hlob zuj zus, thiab cov kev pabcuam kev sib txuas lus tau txuas ntxiv mus ntxiv. Hom kev lag luam. Lub nqaim band nkag tau mus rau hauv lub network tau dhau los ua ib qho kev txwv tsis pub txoj kev loj hlob ntawm lub network mus rau broadband. Kev nkag mus rau lub network lag luam muaj peev xwm loj, thiab cov thev naus laus zis tshiab tau tshwm sim tas li kom tau raws li qhov xav tau ntawm cov neeg siv khoom. Lub network nkag tau yog lub hom phiaj thiab qhov tseem ceeb rau kev txhim kho cov ntaub ntawv hauv teb chaws. Kev siv tshuab siv network tau dhau los ua qhov tseem ceeb thiab kev nqis peev hotspot ntawm cov chaw tshawb fawb, cov neeg muag khoom sib txuas lus, cov tuam txhab sib txuas lus thiab cov chaw ua haujlwm.
Qhov zoo ntawm PON
1. Muaj peev xwm muab pob tshab broadband thiab tus nqi qis kis tau tus nqi.
2. Piv nrog rau lub active optical network, nws cov installation, commissioning thiab txij nkawm cov nqi yog tsawg, thiab lub system yog ntau txhim khu kev qha thiab ruaj khov, yog li cov kev siv network yog siv ntau PON systems.
3. Vim tias PON tau txais qhov point-to-multipoint access mode, tus nqi tsim kho vaj tse ntawm cov khoom siv kho qhov muag ntawm lub hauv paus chaw ua haujlwm thiab cov neeg siv khoom tau txais los ntawm cov neeg siv khoom, uas tuaj yeem ua rau cov nyiaj rov qab los ntawm kev nqis peev hauv kev tsim kho network. Piv nrog rau cov txheej txheem ntawm kev teeb tsa qhov kawg-rau-kawg kho qhov muag fiber ntau rau txhua tus neeg siv, qhov ntim ntawm PON cov cuab yeej txhim kho cov kev pabcuam rau tib tus lej ntawm cov neeg siv khoom yog me dua thiab siv qhov chaw tsawg dua hauv lub hauv paus chaw ua haujlwm.
4. PON txhawb nqa ob qho tib si cov kev pabcuam ib txwm muaj (kev pabcuam hauv xov tooj POTS, analog TV) thiab cov kev pabcuam broadband (IP suab kis, IPTV, broadband Internet, thiab lwm yam).
5.PON txhawb nqa txhua tus neeg siv nyob hauv tsev (siv POTS, analog TV thiab cov kev pabcuam cov ntaub ntawv) thiab ntau cov neeg siv khoom lag luam (siv T1 / E1 thiab Ethernet cov kev pabcuam) los sib koom kev nkag mus rau hauv lub network (xws li cov txheej txheem lub cev thiab cov txheej txheem txheej txheem) yam tsis tas yuav siv cov kev sib txawv. Kev nkag mus rau lub network muab kev pabcuam rau lawv, yog li txo cov neeg siv nkag mus rau hauv lub network.