Thaum nws los txog rau cov neeg siv khoom siv hauv cov ntsiab lus fiber ntau, peb feem ntau pom cov lus Askiv xws li ONU, ONT, SFU, thiab HGU. Cov ntsiab lus no txhais tau li cas? Qhov txawv yog dab tsi?
1. ONUS thiab ONTS
Cov ntawv thov tseem ceeb ntawm broadand optical riber ntau kev nkag tau muaj: FTTH, thiab FTTB, thiab cov foos ntawm cov neeg siv khoom siv cov khoom siv sib txawv. Cov neeg siv khoom siv cov khoom siv ntawm FTH thiab FTTO yog siv los ntawm ib tus neeg siv, hu uaOnt(Kho qhov muag network pib, kho qhov muag ntawm cov khoom siv ntawm FTTB ntawm FTTB yog sib koom los ntawm ntau tus neeg siv, hu uaOnu(Chav network kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho kho tau)
Tus neeg siv hais txog ntawm no hais txog tus neeg siv uas tau them nws tus kheej los ntawm tus neeg teb xov tooj, tsis yog cov naj npawb siv. Piv txwv li, cov ONT ntawm FTH yog feem ntau qhia los ntawm ntau cov kev txiav tawm hauv tsev, tab sis tsuas yog ib tus neeg siv tau suav.
2. Hom ntawm OTS
Ont yog dab tsi peb feem ntau hu ib lub modem optical, uas tau muab faib ua sfu (chav tsev neeg siv khoom, ib chav tsev ua lag luam (tib chav ua lag luam siv).
2.1. Sfu
SFU feem ntau muaj 1 txog 4 Ethernet Interfaces, 1 txog 2 lub xov tooj sib cuam tshuam, thiab qee cov qauv kuj muaj cov TV cable. SFU tsis muaj lub rooj vag tsev ua haujlwm, thiab tsuas yog ib lub davhlau ya nyob twg txuas nrog Ethernet chaw nres nkoj tuaj yeem hu tau rau hauv Is Taws Nem, thiab kev tswj hwm cov chaw taws teeb tsis muaj zog. Lub cev kho qhov muag siv nyob rau hauv thaum ntxov ntawm ftth belongs rau SFU, uas tsis tshua siv tam sim no.
2.2. Hgus
Lub cev kho qhov muag tau nruab nrog FTH cov neeg siv qhib rau xyoo tas los no yog txhua yamHNUCov. Piv nrog SFU, HGU muaj cov txiaj ntsig zoo hauv qab no:
(1) HGU yog lub rooj vag ntaus ntawv, uas yog qhov yooj yim rau kev sib txuas hauv tsev; Thaum SFU yog lub pob tshab sib kis, uas tsis muaj rooj vag muaj peev xwm, thiab feem ntau yuav tsum tau koom tes ntawm cov khoom siv hauv lub vag hauv tsev.
(2) hgu txhawb nqa kev kev coj ua thiab muaj NAT ua haujlwm, uas yog txheej txheej-3 ntaus ntawv; Thaum SFU hom tsuas txhawb txheej txheej txheej-2 bridging hom, uas yog sib npaug rau txheej txheej-2 hloov.
(3) HGU tuaj yeem siv nws tus kheej cov ntawv thov dav dav thiab cov khoos phis tawj txawb tuaj yeem nkag ncaj qha rau hauv Is Taws Nem tsis muaj kev sib tham; Thaum SFU yuav tsum tau hu los ntawm tus neeg siv lub computer lossis xov tooj ntawm tes lossis hauv tsev router.
(4) HGU yog yooj yim dua rau kev ua haujlwm loj thiab tswj hwm.
HGU feem ntau los nrogWifi thiab muaj chaw nres nkoj USB.
2.3. Sidus
SBU feem ntau yog siv rau FTTO cov neeg siv nkag, thiab feem ntau muaj Ethernet interface, thiab qee cov qauv muaj E1 interface, lossis WiFi muaj nuj nqi. Piv nrog SFU thiab HGU, SBU muaj kev tiv thaiv hluav taws xob ua tau zoo thiab muaj zog ntau dua li cov kev soj ntsuam sab nraum zoov xws li kev soj ntsuam video.
3. OnuTtsob ntoo
Onu tau muab faib uaTus mdu(Ntau chav tsev nyob, muaj ntau nyob hauv tsev nyob hauv tsev) thiab mtu (ntau chav tsev xauj, chav xauj tsev ntau).
MDU feem ntau yog siv rau kev nkag tau ntawm ntau cov neeg siv nyob hauv qab FTTB daim ntawv thov cuam tshuam, feem ntau muaj 8 tus neeg siv khoom siv lossis FE + xov tooj (tsau xov tooj) interfaces.
MTU feem ntau yog siv rau kev nkag tau ntawm ntau tus neeg siv khoom lag luam lossis ntau lub terminals nyob rau hauv tib lub lag luam hauv FTTB Scenario. Ntxiv nrog rau ethernet interface thiab tsau xov tooj interface, nws kuj tseem muaj E1 interface; Cov duab thiab kev ua haujlwm ntawm MTU feem ntau tsis yog tib yam li cov MDU. Qhov sib txawv, tab sis kev tiv thaiv hluav taws xob tau zoo dua thiab kev ruaj khov yog siab dua. Nrog rau cov nrov FTTO, daim ntawv thov cov xwm txheej ntawm MTU tau txais me dua thiab me dua.
4. Lub ntsiab
Broadman Optical Riber Ntau Txoj Kev Nkag mus rau Pon Technology. Thaum cov ntaub ntawv tshwj xeeb ntawm cov neeg siv cov khoom siv tsis txawv, cov neeg siv khoom-cov khoom siv ntawm Pon tuaj yeem raug xa mus rau Asu.
Onu, ont, sfu, hgu ... no kua roj Txhua yam piav qhia cov ntaub ntawv siv rau cov khoom siv dav dav los ntawm cov ces kaum sib txawv, thiab kev sib raug zoo ntawm lawv tau qhia hauv daim duab hauv qab no.
Lub Sijhawm Post: Apr-21-2023