Fiber rau Lub Tsev (FTTH) yog ib qho kev sib txuas lus dav dav hauv uasoptical fiber ntaukhiav los ntawm tus neeg muab kev pabcuam lub chaw ua haujlwm hauv nruab nrab mus rau txhua qhov chaw nyob lossis chav nyob. Tsis zoo li cov qauv siv hybrid uas tso siab rau tooj liab, coax, lossis Ethernet rau qhov kev sib txuas zaum kawg, FTTH xa qhov kawg - mus rau -txoj kev fiber ntau - los ntawm tus muab kev pabcuam mus rau tus neeg siv khoom lub qhov rooj.
Qhov kev sib txawv ntawd tseem ceeb tshaj qhov nws suab. Tsis yog txhua qhov kev pabcuam ua lag luam raws li "fiber internet" tsim nyog raws li FTTH. Qee tus neeg muab kev pabcuam siv fiber ntau tsuas yog rau lub txee rau hauv txoj kev lossis lub tsev hauv qab daus, tom qab ntawd hloov mus rau tooj liab lossis Ethernet rau qhov txuas ntxiv. Kev nkag siab qhov twg cov fiber ntau tau txiav tawm yog tus yuam sij rau kev ntsuas seb qhov kev sib txuas broadband puas yog FTTH tiag tiag lossis sib txawvFTTx architecturenrog rau fiber ntau - cov ntawv cim npe.
Phau ntawv qhia no hais txog dab tsi FTTH txhais tau li cas, lub network yog li cas, cov khoom twg koom nrog, yuav ua li cas FTTH piv rau FTTP, FTTB, FTTC, thiab FTTN, thiab yuav nrhiav dab tsi thaum txheeb xyuas tus kws kho mob cov lus thov.
FTTH txhais li cas?
FTTH sawv cev rau Fiber rau Lub Tsev. Nws yog hais txog lub network tsim nyob rau hauv uas fiber optic cable yog qhov nruab nrab kis tau tus mob rau tag nrho cov kawg - mais txoj kev - los ntawm tus neeg zov me nyuam lub network nkag mus rau cov neeg siv khoom lub tsev. CovFTTH Council Europe, nrog rau nws cov neeg sib tw hauv North America thiab Asia -Pacific, pom zoo rau tus qauv txhais: FTTH txhais tau hais tias fiber ntau mus txog thaj tsam ntawm qhov chaw nyob, xws li lub thawv sab nraud lossis lub davhlau ya nyob twg sab hauv, tsis muaj ntu tooj liab nyob nruab nrab.
Qhov no tseem ceeb vim tias qhov sib ze fiber ntau tau txais mus rau cov neeg siv kawg, qhov tsawg dua qhov kev sib txuas yog nyob ntawm cov laus tooj liab infrastructure thiab nws qhov kev txwv tsis pub muaj - teeb liab degradation nyob deb, susceptibility rau electromagnetic cuam tshuam, thiab txwv bandwidth qab nthab.
Qhov twg FTTH Fiber Terminate?
Hauv kev xa tawm FTTH tseeb, cov fiber ntau txiav tawm ntawm tus kheej hauv tsev lossis chav tsev. Nyob ntawm qhov project, qhov taw tes ntawm tes yuav yog phab ntsa sab nraum zoov- mounted enclosure, sab hauv tsev fiber ntau txiav lub thawv, los yog lub faceplate nyob rau hauv lub tsev. Qhov kev ntsuam xyuas tseem ceeb yog seb txoj kev kho qhov muag puas tseem tsis tau tawg los ntawm tus neeg muab khoom siv rau cov neeg siv khoom qhov chaw kho qhov muag - yam tsis muaj tooj liab, coaxial, lossis Ethernet choj nyob nruab nrab.
Yog tias cov fiber ntau nres ntawm lub tsev hauv qab daus chav faib khoom thiab qhov kawg kev sib txuas rau txhua chav tsev siv Ethernet lossis tooj liab, uas feem ntau yog cais raws li FTTB (Fiber rau Lub Tsev), tsis yog FTTH. Qhov kev cuam tshuam yog tiag tiag: FTTB kev ua tau zoo nyob ntawm qhov zoo ntawm cov xaim sab hauv, qhov kev ncua deb ntawm lub tsev faib taw tes, thiab lub peev xwm ntawm kev sib koom ua ke hauv tsev.
FTTH Network Ua Haujlwm li cas?
Ib yamFTTH networkua raws li txoj hauv kev los ntawm tus neeg muab kev pabcuam rau cov neeg siv kawg:
Tus kws kho qhov muag Optical Line Terminal (OLT) ntawm lub chaw ua haujlwm hauv nruab nrab hloov cov tsheb khiav hauv lub network rau hauv cov teeb liab kho qhov muag. Cov teeb liab ntawd taug kev los ntawmOptical Distribution Network (ODN)- fiber ntau cabling, splice point, thiab splitters uas ua rau cov nroj tsuag sab nraud. Hauv PON-raws li kev tsim qauv, passive optical splitters faib cov teeb liab kom ib qho khoom siv hluav taws xob tuaj yeem pab ntau tus neeg siv khoom. Lub teeb liab kho qhov muag thaum kawg mus txog rau cov neeg siv khoom thaj chaw, qhov twg Optical Network Terminal (ONT) hloov nws rov qab rau hauv lub teeb liab hluav taws xob uas pub lub router hauv tsev, Ethernet ports, lossis Wi-Fi nkag mus.
Tag nrho txoj kev nkag mus - los ntawm OLT rau ONT - yog fiber ntau. Qhov ntawd yog qhov txawv ntawm FTTH los ntawm architectures qhov twg tooj liab tuav ib feem ntawm txoj kev taug.
Yuav Ua Li Cas Hauv Tsev Tom Qab Fiber Tuaj Txog?
Ib zaug lubONTtau txais lub teeb liab kho qhov muag, nws tso tawm tus qauv Ethernet lossis Wi-Fi txuas. Los ntawm qhov ntawd, lub tsev network ua haujlwm zoo ib yam li lwm yam: lub router faib kev sib txuas rau cov khoom siv thoob plaws hauv lub tsev.
Ib qho kev xav tsis zoo uas tsim nyog hais txog: FTTH thiab Wi-Fi tsis yog tib yam. FTTH yog kev siv thev naus laus zis uas coj bandwidth mus rau qhov chaw. Wi-Fi yog ib qho ntawm ntau txoj hauv kev los faib cov bandwidth hauv tsev. Ib tsev neeg uas muaj kev sib txuas zoo FTTH tseem tuaj yeem ntsib kev ua haujlwm tsis zoo yog tiasroutermuab tso rau tsis zoo los yog hauv - lub network hauv tsev tau teeb tsa tsis zoo.
Cov Cheebtsam tseem ceeb hauv FTTH Network
Kev xa tawm FTTH suav nrog ntau lub ntsiab lus tseem ceeb. Kev nkag siab lawv pab qhia meej tias muaj dab tsi tshwm sim ntawm tus kws kho mob lub network thiab tus neeg siv khoom lub cuab yeej.
Optical Kab Terminal (OLT)
OLT yog tus muab kev pabcuam- cov khoom siv sab hauv uas nyob hauv lub chaw ua haujlwm hauv nruab nrab lossis lub taub hau. Nws tswj cov kev khiav dej num hauv qab thiab sab sauv nruab nrab ntawm tus neeg muab kev pab cuam lub hauv paus network thiab tag nrho cov neeg siv khoom sib txuas. HauvGPONkev xa tawm - feem ntau siv PON tus qauv, txhais los ntawmITU-T G.984- ib qho chaw nres nkoj OLT tuaj yeem ua haujlwm txog 64 lossis 128 tus neeg siv los ntawm kev sib cais tsis sib haum.
Optical Distribution Network (ODN)
ODN suav nrog tag nrho cov nroj tsuag sab nraud ntawm OLT thiab cov neeg siv khoom ONT: feeder fiber, faib fiber ntau, splice enclosures, thiab optical splitters. Qhov zoo thiab tsim ntawm ODN ncaj qha cuam tshuam rau cov teeb liab pob nyiaj siv, qhov siab tshaj plaws ncav cuag, thiab ntev - lub sij hawm kev ntseeg siab ntawm FTTH network.
Optical Splitter
Nyob rau hauv passive optical network architectures, splitters faib ib lub teeb liab kho qhov muag mus rau ntau txoj kev kom ib tug feeder fiber ntau yuav pab tau ntau tus neeg siv kawg. Feem ntau faib piv suav nrog 1:8, 1:16, 1:32, thiab 1:64. Kev sib cais ntau dua txo ib qho - tus nqi fiber ntau tab sis kuj txo cov peev nyiaj siv hluav taws xob kho qhov muag rau ib tus neeg siv, uas txwv tsis pub ncav cuag.
ONT/ONU
CovOptical Network Terminal (ONT).los yog Optical Network Unit (ONU) zaum ntawm cov neeg siv khoom. Nws tau txais cov teeb liab kho qhov muag, ua qhov kho qhov muag - mus rau - hluav taws xob hloov dua siab tshiab, thiab muab cov qauv sib txuas (Ethernet, xov tooj, IPTV) rau cov neeg siv khoom hauv zos. Hauv FTTH kev xa tawm, muaj kev mob siab rau ONT lossis ONU ntawm thaj chaw yog ib qho ntawm qhov tseeb tshaj plaws qhia tias kev sib txuas yog fiber ntau rau hauv tsev.
FTTH Drop Cable
CovFTTH poob cableyog qhov kawg fiber ntau ntu uas khiav los ntawm qhov chaw xa khoom ze tshaj plaws mus rau cov neeg siv khoom qhov chaw. Cov kab xaim xaum yog tsim tshwj xeeb rau qhov kawg - mais nkag - lawv feem ntau sib dua, hloov tau yooj yim, thiab ua kom zoo rau kev yooj yim rau kev taug kev ntawm lub tsev sab nrauv, los ntawm cov kav dej, los yog nyiaj siv ua haujlwm. Qhov kev xaiv ntawmsab hauv thiab sab nraum zoov poob cable designsnyob ntawm ib puag ncig kev teeb tsa thiab lub tsev nyob hauv zos.
FTTH Architecture: PON vs AON
Ob lub hauv paus architecture yog siv los tsim FTTH tes hauj lwm: Passive Optical Networks (PON) thiab Active Optical Networks (AON).
PON (Passive Optical Network) yog dab tsi?
PON siv cov khoom siv kho qhov muag tsis muaj zog hauv thaj teb los faib cov cim los ntawm ib qho chaw OLT rau ntau tus neeg siv ONTs. Vim tias cov splitters tsis xav tau hluav taws xob, kev saib xyuas thaj chaw yooj yim dua thiab cov nqi khiav lag luam yuav qis dua. ITU-T G.984 GPON tus qauv txhawb nqa downstream ceev txog li 2.5 Gbps sib koom nrog cov neeg siv ntawm ib qho chaw nres nkoj PON, thaum tus tshiab XGS-PON tus qauv (ITU-T G.9807.1) txuas qhov no mus rau symmetrical 10 Gbps.
PON tau dhau los ua qhov tseem ceeb hauv kev tsim qauv rau loj - teev FTTH xa tawm thoob ntiaj teb. Nws lub zog yog nyob rau hauv kev ua haujlwm zoo rau ntau tus neeg siv khoom los ntawm ib qho fiber ntau nrog cov nyom sab nraud uas tsis tshua muaj.
AON (Active Optical Network) yog dab tsi?
AON siv cov cuab yeej siv hluav taws xob hloov hluav taws xob hauv kev faib khoom siv los ua kev khiav tsheb mus rau ib tus neeg siv. Txhua tus neeg siv khoom feem ntau tau txais cov fiber ntau tshwj xeeb lossis qhov chaw nres nkoj tshwj xeeb ntawm thaj teb - nyob rau hauv qhov chaw ua haujlwm. AON tuaj yeem muab kev pabcuam bandwidth rau ib tus neeg siv, tab sis nws xav tau lub zog thiab kev saib xyuas ntawm cov ntsiab lus nruab nrab hauv lub network.
Tsis yog architecture yog inherently superior. PON yog dav nyiam rau thaj chaw FTTH ntawm qhov ntsuas vim nws cov qauv nqi thiab kev ua haujlwm yooj yim. AON tej zaum yuav tsim nyog nyob rau hauv ib puag ncig kev lag luam lossis hauv cov xwm txheej tshwj xeeb xa tawm qhov tshwj xeeb rau - neeg siv bandwidth yog qhov tseem ceeb.
FTTH vs FTTP vs FTTB vs FTTC vs FTTN: Qhov txawv yog dab tsi?
Tag nrho cov no yogFTTx variants- lawv piav qhia txog qhov ntev npaum li cas fiber ntau txuas ua ntej lwm qhov nruab nrab kis tau tus mob. Qhov sib txawv yog qhov yooj yim tab sis feem ntau tsis meej pem hauv cov khoom lag luam.
| Lub sij hawm | Fiber Endpoint | Ntu kawg rau cov neeg siv |
|---|---|---|
| FTTH(Fiber rau Tsev) | Ib lub tsev lossis chav tsev | Fiber tag nrho |
| FTTP(Fiber rau qhov chaw) | Lub sij hawm (umbrella) | Muaj peev xwm suav nrog FTTH thiab qee zaum FTTB |
| FTTB(Fiber rau Lub Tsev) | Lub tsev hauv qab daus lossis chav faib khoom | Copper, Ethernet, los yog coax rau ib leeg |
| FTTC(Fiber rau Curb/Cabinet) | Txoj kev txee nyob ze ntawm lub tsev | tooj liab rau lub xeem ob peb puas meters |
| FTTN(Fiber rau lub Node) | Neighborhood node | tooj liab rau qhov kawg ntu ntev, feem ntau 1 km + |
FTTH vs FTTB vs FTTC: Qhov twg siv rau koj cov khoom?
Rau ib leeg ib leeg- tsev neeg, FTTH yog qhov tseeb tshaj plaws: fiber ntau khiav ncaj qha mus rau ONT ntsia ntawm lossis hauv tsev.
Rau ib lub tsev apartment lossis ntau- tsev nyob (MDU), qhov sib txawv ntawm FTTH thiab FTTB nyob ntawm qhov chaw fiber ntau txiav. Yog tias tus neeg teb xov tooj khiav fiber ntau tsuas yog mus rau chav faib khoom hauv qab daus thiab tom qab ntawd siv Ethernet keyboards lossis tooj liab cabling kom ncav cuag txhua chav tsev, kev xa tawm yog FTTB. Yog tias txhua chav tsev muaj nws tus kheej ONT nrog rau txoj hauv kev fiber ntau, uas yog ze rau qhov tseeb FTTH architecture - txawm nyob hauv ib lub tsev.
Nyob rau hauv cov zej zog laus uas muaj fiber ntau buildout tseem tsis tau, FTTC los yog FTTN yuav siv tau raws li kev hloov pauv mus, nrog rau cov kev npaj yuav txuas ntxiv fiber ntau dua lub sij hawm. Qhov tseem ceeb takeaway: tsis yog tag nrho "fiber broadband" yog tib yam. Lub architecture qab ntawm daim ntawv lo ua lag luam txiav txim siab qhov ua tau zoo thiab txhim kho qhov muaj peev xwm ntawm kev sib txuas.
Cov txiaj ntsig ntawm FTTH
FTTH muaj ntau qhov zoo hauv paus hauv nws qhov kawg -mus rau -kawg fiber ntau architecture.
Muaj peev xwm bandwidth siab dua.Vim tias fiber ntau nqa cov ntaub ntawv raws li lub teeb pulses es tsis yog cov teeb liab hluav taws xob, nws txhawb nqa bandwidth ntau duatooj liab- raws li qhov kawg - mais kev sib txuas. GPON technology tam sim no xa mus txog 2.5 Gbps downstream, thaum XGS-PON txhawb nqa symmetrical 10 Gbps - thiab cov qauv tshiab zoo li 50G-PON thawb qhov no ntxiv yam tsis tau hloov cov nroj tsuag fiber ntau nws tus kheej.
Kev ua tau zoo ib yam dhau qhov deb.Copper signals degrade ho nyob deb. Fiber tuav lub teeb liab kev ncaj ncees nyob deb ntau dua spans - GPON txhawb nqa lub cev mus txog 20 km ntawm OLT thiab ONT. Qhov no ua rau FTTH kev ua tau zoo dua tuaj yeem kwv yees tsis hais tus neeg yuav khoom nyob deb npaum li cas los ntawm lub chaw haujlwm hauv nruab nrab.
Symmetrical ceev muaj peev xwm.Tsis zoo li ntau lub cable lossis DSL kev sib txuas uas muaj kev sib txuas qeeb dua li rub tawm nrawm, FTTH networks - tshwj xeeb yog cov uas siv XGS-PON - tuaj yeem xa cov bandwidth sib luag. Qhov no tseem ceeb rau kev sib tham video, huab thaub qab, cov ntsiab lus tsim, thiab txhua daim ntawv thov uas nyob ntawm qhov muaj peev xwm nce.
Ntev - lub sij hawm scalability yam tsis hloov fiber ntau.Raws li covFTTH Council Europe, fiber ntau broadband yog tib txoj kev siv thev naus laus zis nrog lub peev xwm los txhawb kev nce ceev xav tau yam tsis tas yuav hloov kho rau sab nraum zoov fiber ntau cabling nws tus kheej. Cov neeg ua haujlwm hloov kho cov khoom siv hluav taws xob ntawm txhua qhov kawg - OLT thiab ONT - thaum cov fiber ntau hauv av tseem tsis hloov.
Kev them nyiaj yug rau bandwidth- ib puag ncig hnyav.FTTH yog qhov zoo rau cov tsev neeg uas muaj ntau tus neeg siv ib txhij, streaming, ua haujlwm nyob deb, cov khoom siv hauv tsev ntse, thiab qis - daim ntawv thov latency. Nws tseem yog lub hauv paus muaj zog rau cov kev pabcuam tshiab xws li telehealth, cloud gaming, thiab augmented reality.
FTTH Deployment Challenges thiab Limitations
FTTH tsis yog tsis muaj kev sib tw ua tau zoo. Kev ntsuas lawv ncaj ncees yog ib feem ntawm kev txiav txim siab txog kev tsim vaj tsev zoo.
Nqi thiab Civil Works
Qhov teeb meem loj tshaj plaws rau FTTH xa tawm yog tus nqi thiab qhov nyuaj ntawm kev khiav fiber ntau rau txhua qhov chaw. Qhov no suav nrog trenching, duct installation, txoj cai- ntawm - txoj kev tso cai, thiab tseem ceebinstallation ua haujlwm. Hauv greenfield (kev tsim kho tshiab), FTTH yog qhov yooj yim kom suav nrog. Hauv thaj chaw brownfield (tam sim no infrastructure), tus nqi thiab kev cuam tshuam tuaj yeem siab dua - uas yog vim li cas qee tus neeg ua haujlwm pib siv FTTC lossis FTTB ua cov kauj ruam nruab nrab.
Tsev Retrofit Constraints
Cov tuam tsev qub feem ntau nthuav tawm cov teeb meem rau FTTH kev teeb tsa: qhov chaw qis qis, cov kab ke sab hauv uas tsis tuaj yeem hloov tau yooj yim, sib koom ua tswv cuab cov cuab yeej uas nyuaj rau kev txiav txim siab nkag, thiab txwv cov cai hauv tsev. Nyob rau hauv ntau-zaj dab neeg chav tsev thaiv, tau txais fiber ntau los ntawm lub tsev nkag mus rau txhua chav tsev yuav xav tau kev taug kev los ntawm cov risers uas twb muaj lawm, txhim kho tshiabtxoj kab ntsug ntsug, los yog siv micro-duct thiab cua tshuab- cov txheej txheem fiber ntau kom txo qis kev cuam tshuam.
FTTH Installation Hauv Tsev
Txawm hais tias thaum FTTH network mus txog qhov chaw tsis muaj qhov tsis zoo, qhov kawg - cov neeg siv kev paub yog nyob ntawm qhov tshwm sim tom qab kev kho qhov muag. Kev tso chaw router tsis zoo, tsis tu ncua nyob rau hauv - tsev Ethernet cabling, lossis Wi-nkaus tsis txaus-Fi kev pab them nqi tuaj yeem tsim cov fwj uas tsis pom zoo ntawm kev sib txuas fiber ntau nws tus kheej. Qhov no yog ib qho ntawm cov neeg siv kev ntxhov siab - qhov kev nkag mus ua tau zoo, tab sis hauv - kev faib tawm hauv tsev tsis ua.
Qhia seb koj qhov kev sib txuas puas yog FTTH tiag
Ntau qhov kev pabcuam broadband siv lo lus "fiber" hauv lawv cov khoom lag luam, tab sis cov qauv hauv qab yuav tsis yog FTTH. Nov yog yuav ua li cas txheeb xyuas qhov koj tau txais tiag tiag.
Tshawb xyuas qhov twg cov fiber ntau xaus.Puas yog ib qho fiber ntau optical cable khiav txhua txoj hauv kev mus rau koj lub tsev lossis chav tsev, lossis nws puas nres ntawm txoj kev txee, lub tsev hauv qab daus, lossis tus ncej hluav taws xob? Yog tias muaj tooj liab, coaxial, lossis Ethernet ntu ntawm tus neeg muab kev pabcuam fiber ntau thiab koj thaj chaw, nws tsis yog FTTH.
Nrhiav ONT lossis ONU ntawm qhov chaw.Ib qho khoom siv kho qhov muag kho qhov muag sab hauv lossis sab nraum phab ntsa ntawm koj lub tsev yog qhov taw qhia muaj zog ntawm qhov tseeb FTTH kev sib txuas. Yog tias qhov kev sib txuas tuaj txog ntawm Ethernet cable los ntawm kev hloov pauv hauv txoj kev hauv tsev lossis hauv qab daus, qhov kev xa tawm yuav zoo dua FTTB.
Nug tus kws kho mob ncaj qha.Tshwj xeeb thov kev lees paub ntawm seb qhov kev pabcuam yog FTTH, FTTB, lossis lwm qhov sib txawv ntawm FTTx. Cov ntsiab lus lag luam xws li "fiber-powered," "fiber-npaj," lossis "fiber broadband" tsis tas txhais tau tias FTTH. Lub architecture tseem ceeb tshaj li lub npe.
Nkag siab qhov sib txawv ntawm kev nkag mus thiab hauv -kev faib tawm hauv tsev.Txawm tias muaj kev paub tseeb FTTH kev sib txuas, xyuas seb lub teeb liab tau muab faib rau hauv thaj chaw li cas. FTTH txuas muab bandwidth rau ONT; Tom qab ntawd, koj lub router thiab lub network hauv zos txiav txim siab qhov kev paub ntawm txhua lub cuab yeej.
Cov lus nug nug tus kws kho mob lossis tus kws npaj ua haujlwm
- Puas yog fiber ntau ncav cuag txhua chav tsev, lossis tsuas yog qhov chaw nkag hauv tsev?
- Dab tsi nruab nrab yog siv rau hauv ntu kawg - fiber ntau, Ethernet, coax, lossis tooj liab?
- Cov cuab yeej twg tau teeb tsa ntawm cov neeg siv khoom thaj chaw (ONT, ONU, lossis media converter)?
- Puas yog lub network raws li GPON, XGS-PON, lossis lwm tus qauv?
- Dab tsi ceev yog qhov ua tiav ntawm kev nkag mus txuas rau hauv -Wi -Fi?
FTTH vs Cable Internet: Qhov twg zoo dua?
Muab pivFTTH nrog cable internetyuav tsum tau saib tshaj li headline download speeds. Cable (DOCSIS) tes hauj lwm siv coaxial cable rau lub mais kawg thiab qhia bandwidth ntawm cov neeg siv ntawm tib ntu. Thaum lub sij hawm siab tshaj plaws, lub peev xwm sib koom tuaj yeem ua rau muaj kev sib tsoo thiab kev poob qis.
FTTH, tshwj xeeb tshaj yog nyob rau hauv PON configurations, kuj qhia upstream fiber muaj peev xwm ntawm cov neeg rau npe - tab sis lub bandwidth pas dej ua ke muaj ntau heev. GPON chaw nres nkoj muab 2.5 Gbps downstream sib koom nrog rau 32 lossis 64 tus neeg siv, thaum XGS-PON nce qhov ntawd mus rau 10 Gbps. Cable tes hauj lwm siv DOCSIS 3.1 muaj peev xwm theoretically ncav cuag zoo xws li downstream cov nuj nqis, tab sis cov tswv yim kev ceev ceev thiab upstream peev feem ntau poob qis dua qhov FTTH xa.
Qhov tseem ceeb tshaj, FTTH muab txoj hauv kev txhim kho kom pom tseeb. Vim tias qhov muaj peev xwm fiber ntau raug txwv los ntawm cov khoom siv hluav taws xob ntau dua li qhov nruab nrab ntawm nws tus kheej, cov neeg ua haujlwm tuaj yeem hloov kho kom nrawm dua cov qauv (XGS-PON, 25G-PON, 50G-PON) yam tsis tau hloov cov txheej txheem fiber ntau. Kev hloov kho cov kab hluav taws xob feem ntau xav tau kev hloov cog ntoo ntau dua.
FAQ
Q: Puas yog FTTH tib yam li FTTP?
A: Tsis yog raws nraim. FTTP (Fiber mus rau thaj chaw) feem ntau yog siv los ua lub kaus dav dav uas tuaj yeem suav nrog FTTH thiab FTTB kev xa tawm. FTTH tshwj xeeb txhais tau hais tias fiber ntau ncav cuag tus neeg lub tsev lossis chav nyob. Thaum ntsuas qhov kev pabcuam, nws tsim nyog qhia meej seb "FTTP" hauv cov ntsiab lus muab txhais tau li cas hauv tsev tiag tiag - theem fiber ntau lossis suav nrog kev tsim tsev - theem xa tawm.
Q: Puas yog FTTH siv tooj liab nyob qhov twg hauv kev sib txuas?
A: Nyob rau hauv qhov tseeb FTTH xa tawm, tsis muaj tooj liab siv nyob rau hauv txoj kev nkag ntawm tus neeg zov me nyuam OLT thiab tus neeg rau npe ONT. Tom qab ONT, lub teeb liab tau muab faib los ntawm Ethernet cable lossis Wi-Fi hauv tsev, uas suav nrog cov qauv tooj liab Ethernet cabling - tab sis qhov ntawd yog lub network hauv zos, tsis yog qhov txuas nkag.
Q: Puas yog FTTH zoo ib yam li Wi-Fi?
A: Tsis yog. FTTH yog kev siv tshuab uas xa cov bandwidth mus rau qhov chaw. Wi-Fi yog ib txoj hauv kev xa xov wireless hauv zos siv hauv tsev lossis lub tsev. Koj tuaj yeem muaj FTTH nrog tsis zoo Wi-Fi, lossis zoo heev Wi-Fi dhau qhov tsis yog-FTTH kev twb kev txuas. Lawv ua haujlwm ntawm cov txheej txheem sib txawv ntawm lub network.
Q: Qhov txawv ntawm ONT thiab ONU yog dab tsi?
A: Ob nqe lus hais txog cov neeg siv khoom- thaj chaw kho qhov muag khoom uas txiav qhov kev sib txuas ntawm fiber ntau. ONT (Optical Network Terminal) yog lo lus siv feem ntau hauv ITU-T qauv zoo li GPON, thaum ONU (Optical Network Unit) tshwm sim ntau zaus hauv IEEE cov qauv. Hauv thaj chaw FTTH, ob nqe lus piav qhia qhov tseem ceeb ntawm kev ua haujlwm: hloov cov teeb liab kho qhov muag rau hauv Ethernet lossis lwm yam hluav taws xob cuam tshuam rau cov neeg siv khoom hauv zos.
Q: Puas yog FTTH Guarantee ceev dua li Cable lossis DSL?
A: FTTH muab ntau dua - muaj peev xwm nkag tau platform, tab sis qhov tseeb ceev nyob ntawm qhov kev pab cuam, PON tus qauv siv, tus naj npawb ntawm cov neeg siv khoom sib koom PON chaw nres nkoj, thiab qhov zoo ntawm - hauv tsev network. Hais txog kev tsim vaj tsev thiab txhim kho lub peev xwm, FTTH muaj qhov zoo meej hauv lub qab nthab bandwidth, muaj peev xwm nce siab, latency, thiab ntev - nyob deb sib xws piv rau ob qho tib si cable thiab DSL txuas.
Q: FTTH puas tuaj yeem txhawb nqa Symmetrical Upload Thiab Download Ceev?
A: Yog. Thaum GPON yog asymmetrical (2.5 Gbps down, 1.25 Gbps nce), XGS-PON txhawb nqa symmetrical 10 Gbps. Txawm hais tias tus neeg siv khoom tshwj xeeb tau txais kev sib tw nrawm yog nyob ntawm tus neeg teb xov tooj txoj kev npaj pabcuam thiab PON tus qauv siv.