Ib chav tsev kho qhov muag (ONU) yog ib qho ntawm cov khoom siv tseem ceeb hauv txhua qhov kev siv fiber ntau. Yog tias koj tab tom siv, kev yuav khoom, lossis kev daws teeb meem ntawm kev siv kho qhov muag tsis pom kev (PON), ONU yog cov khoom siv uas zaum ntawm cov neeg siv khoom thiab hloov cov teeb liab kho qhov muag rau hauv cov kev pabcuam siv tau- internet, suab, video, thiab kev sib txuas hauv zos.
Tab sis kev nkag siab txog dab tsi ONU ua tsuas yog qhov pib. Hauv kev xyaum, cov lus nug nrawm nrawm: ONU txawv ntawm ONT li cas? Hom ONU twg haum rau ib lub tsev piv rau 20-chav tsev tsev? Cov txheej txheem tswj hwm dab tsi tseem ceeb rau kev nthuav tawm loj? Thiab koj yuav ua li cas kom tsis txhob yuav ib lub cuab yeej zoo li ntawm daim ntawv tab sis tsim teeb meem hauv daim teb?
Phau ntawv qhia no teb cov lus nug uas muaj qhov tob txaus los txhawb kev yuav khoom thiab kev txiav txim siab xa mus tiag tiag- tsis yog cov ntsiab lus xwb.
Dab tsi yog ONU hauv Fiber Optic Networks?
Chav tsev kho qhov muag yog ib tus neeg siv - sab ntaus ntawv hauv PON architecture. Nws lub luag haujlwm tseem ceeb yog kom tau txais cov kab hluav taws xob qis qis los ntawm cov chaw muab kev pabcuam hauv lub network thiab hloov mus rau hauv cov teeb liab hluav taws xob uas cov neeg siv khoom siv -routers, keyboards, xov tooj, teeb - saum lub thawv- siv tau. Nws kuj tseem tswj txoj kev thim rov qab, hloov cov ntaub ntawv hluav taws xob hluav taws xob rov qab rau hauv cov teeb liab kho qhov muag rau kev xa mus rau qhov chaw ua haujlwm hauv nruab nrab.
Nyob rau hauv cov qauv terminology, ONU tau txhais nyob rau hauv ITU-T G.984 series (uas suav nrog GPON) thiab IEEE 802.3ah tus qauv (uas suav nrog EPON). Ob lub moj khaum tso ONU raws li tus neeg siv khoom- ntsib qhov kawg ntawm kev siv qhov muag tsis pom kev. Raws liITU-T G.984.1, ONU muab cov neeg siv khoom- sab cuam tshuam thiab ua haujlwm nrog OLT thiab ODN kom xa cov khoom siv dav dav.
Tshaj li cov teeb liab hloov pauv yooj yim, ONU niaj hnub no feem ntau ua haujlwm ntau yam ntxiv: xa ntau yam kev pabcuam (cov ntaub ntawv, lub suab, video) los ntawm cov chaw nres nkoj sib txawv, ua kom muaj txiaj ntsig zoo - ntawm - cov cai tswjfwm kev pabcuam, txhawb cov chaw taws teeb tswj, thiab ua kom muaj kev tswj hwm firmware los ntawm tus neeg teb xov tooj. Qhov no ua rau ONU deb tshaj li qhov hloov pauv hloov pauv tsis zoo - nws yog ib qho khoom siv, tswj kev nkag mus.
Qhov twg ONU haum rau hauv PON Network?
Lub passive optical network muaj peb lub ntsiab lus ua haujlwm ua ke:
CovOLT (Optical Line Terminal)zaum ntawm tus neeg muab kev pabcuam lub chaw haujlwm hauv nruab nrab lossis lub taub hau. Nws tswj hwm tag nrho PON, tuav cov kev faib bandwidth, kev lees paub, thiab kev teem caij tsheb rau txhua tus neeg koom nrog.
CovODN (Optical Distribution Network)yog qhov passive fiber infrastructure ntawm OLT thiab cov neeg siv kawg. Nws suav nrog fiber ntau cables,PLC splitters, faib thav duab, thiabfiber ntau optic connectors-tag nrho cov khoom passive uas yuav tsum tsis muaj hluav taws xob.
CovONU los yog ONTzaum ntawm cov neeg siv khoom kawg, qhov twg cov teeb liab kho qhov muag yuav tsum tau hloov mus rau hauv cov kev pabcuam uas tib neeg thiab cov lag luam siv tiag tiag.
Hauv kev xa tawm GPON ib txwm, ib qhov chaw nres nkoj OLT txuas mus txog 128 ONUs los ntawm ODN, siv lub ntsiab lus -rau-multipoint architecture. Cov ntaub ntawv hauv qab yog tshaj tawm los ntawm OLT mus rau tag nrho ONUs ntawm qhov chaw nres nkoj, thaum cov ntaub ntawv ntws tawm yog tswj los ntawmsij hawm- faib ntau yam nkag (TDMA), yog li ntau ONUs tuaj yeem sib koom tib lub fiber ntau yam tsis muaj kev sib tsoo.
Qhov twg ONU tau teeb tsa lub cev hloov pauv nrog tus qauv xa tawm:
- Hauv FTTH (fiber rau hauv tsev):cov cuab yeej feem ntau yog ntsia sab hauv lossis sab nraum ib qho chaw nyob. Hauv qhov xwm txheej no, nws feem ntau hu ua ONT. Ib qho kev teeb tsa hauv tsev feem ntau suav nrog phab ntsa- txuas lub tsev nyob ze ntawm qhov chaw nkag ntawm fiber ntau thiab txuas mus rau Wi-Fi router lossis lub rooj vag hauv tsev.
- Hauv FTTB (fiber rau lub tsev):cov cuab yeej kho qhov muag feem ntau yog zaum hauv chav tsev hauv tsev, chav tsev hauv qab daus, lossis riser txee, thiab faib cov kev pabcuam rau ntau lub tsev lossis chaw ua haujlwm ntawm tooj liab lossis sab hauv cabling. Ntawm no, lo lus ONU yog ntau dua vim tias lub cuab yeej ua haujlwm raws li qhov sib koom nkag.
- Hauv FTTO (fiber rau lub chaw ua haujlwm):cov cuab yeej tau muab tso rau hauv ib puag ncig chaw ua haujlwm, feem ntau xav tau kev lag luam -qib interfaces xws li ntau lub Gigabit Ethernet ports, VoIP kab, lossis PoE tso zis rau IP xov tooj thiab cov ntsiab lus nkag.
Yog xav paub ntxiv txog yuav ua li cas cov qauv xa tawm no tau npaj thiab tsim, saib pebCov lus qhia tswv yim los tsim FTTH network.
ONU ua haujlwm li cas?
Ntawm txheej txheej ntawm lub cev, ONU ua qhov kho qhov muag - mus rau - hluav taws xob hloov dua siab tshiab hauv kev taw qhia nqes dej thiab hluav taws xob - mus rau - kev hloov kho qhov muag ntws mus. Tab sis kev ua haujlwm tiag tiag suav nrog ntau cov txheej txheem sib koom ua ke.
Downstream txais tos:OLT xa cov ntaub ntawv mus rau tag nrho ONUs ntawm ib qho kev sib koom fiber ntau siv lub tshuab tshaj tawm. Nyob rau hauv GPON, lub downstream wavelength feem ntau yog 1490 nm rau cov ntaub ntawv thiab xaiv 1550 nm rau video overlay. Txhua ONU tau txais tag nrho cov teeb liab downstream tab sis tsuas yog rho tawm cov thav ntawv hais rau nws, raws li nws qhov chaw nres nkoj GEM thiab VLAN cov haujlwm.
Upstream kis tau tus mob:Vim tias ntau ONUs sib koom ib qho fiber ntau, cov tsheb thauj mus los yuav tsum tau ua tib zoo teem sijhawm. OLT muab txhua ONU lub sijhawm tshwj xeeb rau kev sib kis siv TDMA. ONU buffers nws cov ntaub ntawv ntws thiab xa tawm tsuas yog thaum nws faib lub qhov rais. Nyob rau hauv GPON, lub upstream wavelength yog 1310 nm.
Kev sib tw thiab synchronization:Txij li thaum ONUs nyob ntawm qhov sib txawv ntawm OLT- qee qhov yuav nyob deb li 2 km, lwm tus 15 km- OLT ua cov txheej txheem sib txawv los ntsuas qhov puag ncig - ncua mus rau txhua ONU thiab kho lub sijhawm kom cov dej ntws tawm ntawm qhov sib txawv ONU tuaj txog ntawm OLT yam tsis sib tshooj.
Kev xa khoom:Nyob ntawm nws qhov kev teeb tsa, ONU muab cov neeg siv-faus interfaces suav nrog Ethernet ports (GE lossis FE), Wi-Fi xov tooj cua, POTS/FXS cov chaw nres nkoj rau lub suab analog, RF chaw nres nkoj rau CATV, thiab hauv qee cov qauv, PoE cov zis tawm rau lub zog txuas nrog xws li IP xov tooj lossis lub koob yees duab kev ruaj ntseg.
Kev tswj chaw taws teeb:Cov neeg nqa khoom feem ntau -qib ONUs txhawb kev tswj hwm ntawm OMCI (ONU Management thiab Control Interface), txhais hauvITU-T G.988. OMCI tso cai rau OLT teeb tsa, saib xyuas, thiab teeb meem ONU nyob deb. Ntau yam khoom siv kuj txhawb nqaTR-069 (CWM), Broadband Forum cov txheej txheem rau kev tswj hwm CPE dav dua, uas ua rau muaj kev hloov kho firmware, kuaj mob, thiab kev pabcuam kev pabcuam los ntawm lub hauv paus pib- teeb tsa server.
ONU vs ONT: Qhov txawv tiag tiag yog dab tsi?
Qhov no yog ib qho ntawm cov lus nug uas nquag nug hauv kev sib txuas lus fiber ntau, thiab cov lus teb yog yooj yim dua li cov ntawv feem ntau ua rau nws zoo li.
Hauv ITU-T cov lus siv (G.984 GPON tus qauv series), ONT txhais tau tias yog hom ONU tshwj xeeb uas ua haujlwm rau ib tus neeg siv khoom thiab nyob ntawm cov neeg siv khoom. IEEE 802.3ah lub moj khaum rau EPON siv lo lus ONU dav dav rau txhua tus neeg siv khoom siv -sab optical access device. Yog li los ntawm cov qauv kev pom, ONT yog ib pawg ntawm ONU-tshwj xeeb, ib leeg -subscriber, thaj chaw- nyob qhov sib txawv.
Hauv kev ua lag luam txhua hnub, ob nqe lus sib tshooj hnyav heev. Ntau tus neeg muag khoom sau npe rau lawv cov FTTH cov cuab yeej ua "ONT" thiab lawv cov ntau- cov neeg siv khoom lossis lub tsev- qib li "ONU," tab sis qhov no yog kev sib cog lus, tsis yog txoj cai nruj. Qee cov tuam txhab siv "ONU" rau txhua yam.
Rau kev yuav khoom thiab kev txiav txim siab xa mus, daim ntawv lo tseem ceeb tsawg dua li cov khoom siv tiag tiag. Qhov koj yuav tsum tsom mus rau yog lub luag haujlwm xa mus:
- Yog tias lub cuab yeej txiav tawm fiber ntau rau ib tsev neeg nrog cov neeg siv ncaj qha - sab interfaces (Ethernet, Wi-Fi, suab), nws ua haujlwm raws li ONT txawm tias daim ntawv lo hais li cas.
- Yog tias lub cuab yeej zaum ntawm ib theem tsev thiab faib cov kev pabcuam rau ntau tus neeg siv khoom los ntawm kev hloov pauv lossis txuas ntxiv, nws ua haujlwm raws li kev sib koom ONU.
Qhov tseem ceeb ntawm kev tshem tawm: ib txwm txheeb xyuas cov txheej txheem teeb tsa, teeb tsa chaw nres nkoj, thiab kev tswj hwm kev sib raug zoo dua li tsis tso siab rau ONU lossis ONT daim ntawv lo ib leeg.
OLT vs ONU: Nkag siab Tus Muab Kev Pabcuam thiab Tus Neeg Siv Khoom
Thaum ONU vs ONT tsis meej pem yog hais txog cov ntsiab lus, OLT vs ONU tsis meej pem yog hais txog cov luag haujlwm ntawm architecture- thiab qhov tsis ncaj ncees lawm tuaj yeem ua rau xaj khoom tsis raug tag nrho.
OLT (Optical Line Terminal) yog tus muab kev pabcuam- sab ntaus ntawv. Nws zaum hauv lub chaw ua haujlwm hauv nruab nrab, cov ntaub ntawv chaw, lossis lub taub hau, thiab nws tswj hwm tag nrho PON. OLT tswj hwm kev faib tawm bandwidth, kev lees paub tus neeg siv khoom, kev teem caij tsheb, thiab uplink rau tus neeg nqa khoom lub hauv paus network. Ib qho OLT chassis tuaj yeem tswj hwm ntau txhiab ONUs hla ntau lub PON chaw nres nkoj.
ONU (Optical Network Unit) yog tus neeg siv - sab ntaus ntawv. Nws zaum ntawm cov neeg siv khoom hauv tsev lossis lub tsev thiab txuas qhov kawg - cov khoom siv rau lub network fiber ntau. ONU tsis muaj lub luag haujlwm los tswj PON- nws tau txais cov lus qhia los ntawm OLT thiab ua rau lawv.
Xav txog nws li no: OLT yog tus tswj hwm, ONU yog qhov kawg. Lawv yuav tsum sib haum raws li tus qauv PON (GPON, EPON, XGS-PON), kev tswj hwm raws tu qauv (OMCI version), thiab qhov ntsuas qhov muag. Tsis sib haum OLT-ONU khub yuav tsis sau npe, txawm tias ob qho khoom siv ua haujlwm tau zoo.
Hom ONU Devices los ntawm Deployment Scenario
ONU cov khoom siv tsis yog ib qho -loj- haum- tag nrho. Cov cuab yeej tsim nyog nyob ntawm seb nws ua haujlwm rau leej twg, qhov twg nws raug teeb tsa, thiab cov kev pabcuam twg nws xav tau xa. Ntawm no yog yuav ua li cas cov pawg tseem ceeb cuam tshuam los ntawm tiag tiag - ntiaj teb kev xa tawm cov ntsiab lus.
SFU (Single Family Unit) - Kev nkag mus tau yooj yim
Ib qho SFU ONU yog tsim los rau kev ncaj ncees nyob hauv broadband. Nws feem ntau muaj ib lossis ob qhov chaw nres nkoj Ethernet, qee zaum CATV RF chaw nres nkoj, thiab cov yam ntxwv ntawm lub nkoj tsawg tsawg. SFU yog qhov tsim nyog thaum tus neeg siv khoom lub qhov rooj nkag hauv tsev (router, Wi-Fi nkag point) yog ib qho khoom siv cais, thiab ONU txoj haujlwm nkaus xwb yog txiav tawm fiber ntau thiab muab cov ntaub ntawv sib txuas.
Kev xa tawm ib txwm: phab ntsa-mounted hauv ib lub tsev hauv FTTH rollout qhov twg ISP muab ib lub router cais.
HGU (Home Gateway Unit) - Txhua yam -nyob rau hauv -Ib Qhov Chaw Nyob
Ib qho HGU muab cov haujlwm ONU nrog lub rooj vag hauv tsev. Nws suav nrog ua-hauv Wi-Fi, ntau qhov chaw nres nkoj Ethernet, VoIP (feem ntau ntawm SIP), thiab qee zaum IPTV txhawb nqa. Rau ntau qhov chaw nyob, HGU tshem tawm qhov xav tau ntawm lub router cais, txo cov khoom siv thiab ua kom yooj yim installation.
Kev xa tawm ib txwm: ib leeg- tsev neeg lossis cov tsev me me uas ISP xav muab ib lub cuab yeej siv dav dav, lub suab, thiab Wi-Fi.
SBU (Small Business Unit) - Chaw Haujlwm -Grade Access
Ib qho SBU ONU tsom rau qhov chaw ua haujlwm me lossis chaw lag luam. Piv nrog rau hauv tsev-cov khoom siv taw qhia, SBUs nyiam muab ntau qhov chaw nres nkoj Ethernet (feem ntau plaub GE chaw nres nkoj lossis ntau dua), QoS tswj tau zoo dua, kev txhawb nqa rau ntau txoj kab VoIP, thiab ntau txoj kev tswj xyuas zoo dua. Qee cov qauv SBU suav nrog PoE tso zis rau lub zog IP xov tooj lossis cov ntsiab lus nkag wireless ncaj qha.
Kev xa tawm ib txwm: cov chaw ua haujlwm me me, cov chaw muag khoom, lossis cov chaw ua haujlwm hauv FTTO rollout.
MDU (Multiple Dwelling Unit) - Chav tsev -Kev Siv Hauv Tsev
MDU ONU yog tsim los rau cov neeg nyob hauv ntau- ib puag ncig. Nws muab ntau tus neeg siv-fab cov chaw nres nkoj-feem ntau 8, 16, lossis txawm tias 24 FE lossis GE cov chaw nres nkoj- yog li ntawd ib qho khoom siv kho qhov muag hauv ib lub tsev cov cuab yeej siv chav lossis chav hauv tsev tuaj yeem ua haujlwm rau tag nrho hauv pem teb lossis tis. MDU ONUs yog ib feem tseem ceeb hauv FTTB kev xa tawm uas khiav ib tus neeg fiber ntau poob rau txhua chav tsev tsis ua tau.
Kev xa tawm ib txwm: cov tsev tsev, cov tsev so, lossis cov vaj tsev sib raug zoo uas ib qho ONU hauv pem teb lossis ib tus riser pab ntau tsev neeg.
MTU (Multiple Tenant Unit) - Kev Lag Luam Ntau -Tenant Access
Ib qho MTU ONU zoo ib yam li lub tswv yim rau MDU tab sis taw qhia rau kev lag luam lossis sib xyaw- siv cov tsev. Nws txhawb nqa ntau tus neeg ua lag luam nrog ntau dua rau - qhov kev cia siab ntawm qhov chaw nres nkoj bandwidth, kev cais tsheb nruj dua, thiab kev tswj hwm ntau dua. MTU cov khoom siv feem ntau suav nrog VLAN-ib - tus neeg xauj tsev teeb tsa thiab tuaj yeem txhawb nqa QoS cov ntaub ntawv qib siab.
Kev xa tawm ib txwm: cov tsev ua haujlwm, co- chaw ua haujlwm, lossis chaw ua lag luam nrog ntau tus neeg xauj tsev sib koom ib lub tsev- theem fiber ntau txuas.
GPON ONU vs EPON ONU vs XGS-PON ONU
Tus qauv PON koj lub network siv txiav txim siab uas ONU koj tuaj yeem xa mus. Peb cov no yog cov feem ntau:
GPON UA- Ua haujlwm raws li ITU-T G.984 tus qauv. Txhawb nqa mus txog 2.488 Gbps downstream thiab 1.244 Gbps ntws ntws, sib koom ntawm txhua ONUs ntawm ib qho chaw nres nkoj PON. GPON siv GEM encapsulation thiab OMCI rau kev tswj hwm. Qhov no yog tam sim no feem ntau siv PON thev naus laus zis thoob ntiaj teb.
EPON UA- Ua haujlwm raws li IEEE 802.3ah tus qauv. Txhawb nqa symmetric 1.25 Gbps (nrog rau qhov tseeb dhau ntawm 1 Gbps tom qab nyiaj siv ua haujlwm). EPON siv ib txwm Ethernet framing, uas ua kom yooj yim sib cuam tshuam nrog Ethernet-raws li kev sib txuas. EPON yog dav siv nyob rau hauv cov cheeb tsam ntawm Asia, tshwj xeeb tshaj yog nyob rau hauv Tuam Tshoj thiab Nyiv.
XGS-PON ONU- Ua haujlwm raws li ITU-T G.9807.1 tus qauv, xa symmetric 10 Gbps. XGS-PON yog tsim los ua ke nrog GPON ntawm tib ODN siv cov wavelengths sib txawv, tso cai rau cov tswv lag luam txhim kho cov neeg siv khoom tsis tas yuav hloov tag nrho cov nroj tsuag sab nraud. Qhov no yog qhov tshwm sim tom ntej no - tiam PON thev naus laus zis rau cov tswv lag luam twb tau khiav GPON.
ONU tsim rau GPON yuav tsis ua haujlwm ntawm EPON network, thiab rov ua dua. Ib txwm paub meej tias ONU sib phim OLT's PON tus qauv ua ntej yuav khoom.
Puas yog ONU tib yam li ONT?
Tsis yog raws nraim, tab sis lawv zoo sib xws. Hauv ITU-T qauv, ONT yog hom ONU tshwj xeeb tsim los rau ib leeg - tus neeg siv khoom, thaj chaw- siv FTTH. Hauv kev xyaum, ntau tus neeg muag khoom thiab cov neeg siv khoom siv cov ntsiab lus sib hloov. Qhov kev ua haujlwm sib txawv nyob ntawm cov ntsiab lus xa mus: ib lub cuab yeej ua haujlwm rau ib tsev neeg ua haujlwm ua ONT, thaum ib tus pab ntau tus neeg siv hauv lub tsev ua haujlwm raws li kev sib koom ONU.
Qhov txawv ntawm OLT thiab ONU yog dab tsi?
OLT yog tus muab kev pabcuam- sab ntaus ntawv uas tswj PON- nws tswj cov bandwidth, authentication, thiab teem caij tsheb. ONU yog tus neeg siv - sab ntaus ntawv uas txuas cov neeg rau npe rau lub network fiber ntau. Lawv zaum ntawm qhov kawg ntawm qhov kev faib tawm qhov muag tsis pom kev thiab yuav tsum tau sib xws raws li PON tus qauv thiab kev tswj hwm raws tu qauv.
Puas tuaj yeem ONU hloov lub router?
Ib qho yooj yim SFU ONU tsis tuaj yeem hloov lub router- nws muab cov fiber ntau- rau -Ethernet handoff tab sis tsis muaj routing, NAT, DHCP, lossis Wi-Fi ua haujlwm. Txawm li cas los xij, ib qho HGU (Home Gateway Unit) hom ONU sib koom ua ke lub rooj vag ua haujlwm suav nrog Wi-Fi, routing, thiab qee zaum VoIP, zoo sib txuas ONU thiab router rau hauv ib lub cuab yeej.
ONU lub cev nyob qhov twg?
Nws nyob ntawm hom kev xa tawm. Hauv FTTH, ONU lossis ONT feem ntau yog nruab rau hauv cov neeg siv khoom lub tsev nyob ze ntawm qhov chaw nkag ntawm fiber ntau. Hauv FTTB, nws feem ntau yog muab tso rau hauv lub txee rau hauv chav tsev, cov khoom siv hauv qab daus, lossis lub txee dai khaub ncaws. Hauv FTTO, nws tuaj yeem zaum ntawm lub rooj, hauv lub txee rau cov neeg rau zaub mov, lossis hauv chav faib khoom hauv pem teb.
Ib ONU puas tuaj yeem pab ntau tus neeg siv?
Yog lawm. MDU (Multiple Dwelling Unit) thiab MTU (Multiple Tenant Unit) ONUs tau tsim tshwj xeeb rau lub hom phiaj no. Ib qho MDU ONU tej zaum yuav muaj 8, 16, lossis 24 tus neeg siv khoom siv -fab cov chaw nres nkoj, tso cai rau ib qho khoom siv kho qhov muag los ua haujlwm rau tag nrho cov chav tsev hauv pem teb lossis lub tsev me.
OMCI yog dab tsi thiab vim li cas nws tseem ceeb rau kev xaiv ONU?
OMCI (ONU Management and Control Interface) yog cov txheej txheem tswj hwm uas tau teev tseg hauv ITU-T G.988 uas tso cai rau OLT los teeb tsa, saib xyuas, thiab teeb meem ONUs. Rau cov neeg nqa khoom- qib kev xa tawm, OMCI kev txhawb nqa yog qhov tseem ceeb vim tias nws ua rau tus neeg teb xov tooj tswj hwm ntau txhiab ONUs los ntawm OLT yam tsis muaj kev nkag ncaj qha rau txhua lub cuab yeej. Tsis muaj OMCI compatibility nrog koj OLT tuaj yeem ua rau cov khoom siv sib txuas tab sis tswj tsis tau.
Dab tsi yog PON cov qauv ua ONUs txhawb nqa?
Feem ntau yog GPON (ITU-T G.984, mus txog 2.5 Gbps downstream), EPON (IEEE 802.3ah, 1 Gbps symmetric), thiab XGS-PON (ITU-T G.9807.1, 10 Gbps symmetric). Qee cov khoom siv tshiab txhawb nqa 10G-EPON (IEEE 802.3av). ONU yuav tsum ua raws li PON tus qauv siv los ntawm lub network OLT-cross- cov khoom siv tus qauv tsis tshua muaj thiab yuav tsum tau kuaj xyuas kom zoo.
Kuv yuav kuaj xyuas li cas yog ONU sib haum nrog kuv OLT?
Pib los ntawm kev lees paub tias ob lub cuab yeej siv tib tus qauv PON (GPON, EPON, lossis XGS-PON). Tom qab ntawd txheeb xyuas OMCI lossis kev tswj hwm raws tu qauv sib raug. Txoj kev txhim khu kev qha tshaj plaws yog txhawm rau txheeb xyuas OLT tus neeg muag khoom daim ntawv teev cov cuab yeej kuaj lossis ua ib qho kev kuaj sim ua ntej yuav khoom hauv ntim.
Xaus
Chav tsev kho qhov muag tsis yog qhov kawg ntawm fiber ntau xwb -nws yog lub cuab yeej uas txiav txim siab seb cov kev pabcuam twg mus txog rau tus neeg siv khoom, cov kev pabcuam raug tswj hwm li cas, thiab seb qhov kev xa tawm tuaj yeem ntsuas li cas. Xaiv txoj cai ONU txhais tau tias saib dhau qhov kev ntsuas nrawm los txiav txim siab txog kev xa tawm, kev xav tau ntawm kev sib txuas, kev tswj hwm kev sib raug zoo, ib puag ncig lub cev, thiab kev loj hlob yav tom ntej.
Txawm hais tias koj tab tom npaj ib qho chaw nyob FTTH rollout, retrofitting tsev apartment nrog FTTB, los yog siv fiber ntau -raws li kev sib txuas hauv chaw ua haujlwm, ONU txheej txheem xaiv ua raws tib lub ntsiab lus: phim PON tus qauv, txheeb xyuas cov kev pabcuam, txheeb xyuas OLT kev sib raug zoo, thiab npaj rau kev ua haujlwm. Tau txais cov peev txheej no nyob rau theem kev yuav khoom tiv thaiv kev hloov pauv thiab kev ua haujlwm mob taub hau tom qab kev teeb tsa.
Yog xav paub ntxiv txog fiber ntau optic Cheebtsam thiab kev daws teeb meem, tshawb xyuas pebfiber optic kev daws teeb meemlos yog tshawb xyuas peb qhov puvcov khoom catalog.
