Hauv kev teb rau cov khoom lag luam teeb meem tau ntsib los ntawm peb cov neeg siv khoom, peb lub tuam txhab R & D engineers yuav rov tsim cov teeb meem txog XPON ONU / GPON ONU cov khoom raws li tus neeg siv khoom xav tau, thiab yog tias tsim nyog, tseem yuav rov tsim dua tus neeg siv khoom siv thiab ua tiav qhov kev sim hang. nyob rau hauv peb R & D kuaj.Cov khoom siv olt ntawm peb lub tuam txhab tseem yuav raug siv thaum lub sijhawm kuaj, thiab software ua haujlwm hloov kho thiab kho kab laum yuav ua rau nws.
Peb yuav sau cov khoom raws li kev sim, xws li XPON ONU / GPON ONU, los tsim ib lub cav mount.Nyob rau hauv lub cav mount, lub hwj chim kho qhov muag ntawm lub ntse ONU los yog qhov txuas ntawm cov khoom siv kho qhov muag yuav raug kaw.Thaum peb sim tus tsav tsheb tshiab nyob rau hauv GPON OLT thiab EPON OLT: SFU PPPOE untagged dialing nyob rau hauv GPON lub sij hawm no tsuas yog xav tau rau npe thiab configure cov kev pab cuam, tsis muaj cov lus txib ntawm ont port vlan 1 18 eth 1 pob tshab.
Los ntawm koj 8-chaw nres nkoj ntse kev sib txuas lus ONU optical miv module chaw tsim tshuaj paus
2. Hais txog OLT Cov Khoom Siv Kho Mob
Thaum OLT ntaus ntawv suav nrog SFU kev pabcuam kev teeb tsa, yog ONU hom yog SFU, thiab ONU LAN chaw nres nkoj tau txais IP chaw nyob uas tau muab los ntawm cov txheej txheem sab saud, koj yuav tsum ntxiv VLAN teeb tsa ntawm qhov chaw sib txuas ZXAN (config) # pon- onu-ng gpon-onu_ 1/2/1:6. ZXAN(gpon-onu-mng 1/2/1:6)#vlan port eth_ 0/1 mode tag vlan 100
Rau CATV kev pabcuam teeb tsa, xa mus rau ONU kev txhawb nqa los tswj CATV hloov ON / OFF los ntawm OMCI (ME82)
ZXAN(config)#pon-onu-mng gpon-onu_ 1/2/1:6
ZXAN(gpon-onu-mng 1/2/1:6)#interface video video_ 0/1 state lock
ZXAN(gpon-onu-mng 1/2/1:6)#interface video video_ 0/1 state unlock
Los ntawm koj chav sib txuas lus OLT cov chaw tsim khoom!
3. XPON ONU hais txog lub network technology qhia
XPON ONU yog ib lub tshuab uas tseem tab tom tsim, thiab nws daim ntawv thov hauv Suav teb tau maj mam nthuav dav.Tuam Tshoj Telecom tau tsim tus qauv.Nyob rau hauv tus txheej txheem ntawm kev txhim kho tus qauv, vim hais tias zoo ib yam ntawm daim ntawv thov thiab qhov chaw ntawm DSL thiab XPON ONU, paub tab kev tswj thiab technology nyob rau hauv lub DSL teb tau xaiv siv rau siv.TR101 sawv cev rau kev txhim kho txuas ntxiv thiab cov kev cai / kev tswj hwm hauv DSL teb, thiab CTC XPON ONU yuav kawm ntau lossis tsawg dua los ntawm nws
Yuav hloov pauv li cas los ntawm ATM-based DSL network (TR059) mus rau Ethernet-based DSL network
Muab cov kev pabcuam IP siab dua thiab muaj txiaj ntsig zoo dua (Video, VOIP, Gaming, L2VPN / IPVPN, thiab lwm yam)
Zoo dua IP QOS
Nrog rau cov kev cai thiab kev tswj hwm cov cai rau cov haujlwm tseem ceeb xws li VLAN, QOS, Multicast, thiab lwm yam
4. 10G GPON ONU Technical Basis
Txuj kev txhim kho ntawm 10G GPON ONU:
(1) FSAN faib cov tiam tom ntej PON ua ob theem: NGA1 yog raws li TDMA PON ua kom ceev dua.Nws ceev yog txhais raws li 10Gbps.NGA2 yog kev sib tham ntawm qee qhov kev hloov kho thev naus laus zis ntau dua thiab qee lub hom phiaj tsis meej ntawm NG-PON1.Piv txwv li, WDM PON, OFDM, thiab lwm yam. NG-PON tuaj yeem siv tau zoo rau FTTx, xws li cov neeg siv kev lag luam, cov neeg siv ib tus neeg thiab cov khoom siv mobile.
(2) ITU NGA1 XGPON1: 10G GPON Asymmetric: Tshaj tawm G.987.1&G.987.2 ;G.987.3 & G.988 tau luam tawm thaum Lub Rau Hli 2010.ITU NGA1 XGPON2: 10G GPON Symmetric: Sib tham pib hauv 2010.Q1.Ib qho muaj peev xwm yog overleap symmetric 10G GPON thiab ncaj qha mus rau NGA2.
5. Kev tsim kho ntawm OLT cov cuab yeej coding chaw nres tsheb ib puag ncig
Peb yog cov chaw tsim khoom OLT, thiab ib puag ncig kev tsim kho ntawm chaw nres tsheb coding yuav koom nrog hauv peb chav sib txuas lus.
Txog ib puag ncig kev tsim kho ntawm Tftpd32 software:
1. Ntxig lub serial cable rau hauv cov khoom OLT.Raws li pom hauv daim duab hauv qab no: qhov txuas sab sauv yog qhov chaw nres nkoj serial, thiab qhov txuas hauv qab yog lub network cable.
2. Qhib lub computer thiab xaiv "Tftpd32" software.
3. Xaiv lub zos nplaub tshev uas Tftpd32 ntsia.
OLT ntaus ntawv code sau-v8 software ib puag ncig kev tsim kho
1. Xaiv OLT sau-v8 software, txoj nyem rau qhib nws cov ntaub ntawv qhov chaw.
2. Hloov kho cov ntaub ntawv hloov kho kom raug raws li OLT cov khoom yuav tsum tau ua.
OLT ntaus ntawv code sau-v8 software ib puag ncig kev tsim kho
1. Yog hais tias cov cai sau tau zoo, lub computer interface yuav tso saib ntsuab "PASS"
2. Tom qab tus lej sau tiav, muab tshuaj txhuam Mac daim ntawv lo rau ntawm sab laug sab ntawm OLT cov khoom.
6. Kev sib txuas lus onu/optical fiber onu startup tsom xam
Hais txog dab tsi yog uboot: uboot yog qhov tseeb khau raj program - bootloader.Khau raj, ua kom tiav hardware initialization, pib hardware platform loader, pib lub hardware, thiab load lub operating system.Txhawb ntau yam khoom siv, xws li ARM, MIPS, X86, AVR32, RISC-V architecture, thiab ntau yam kev khiav haujlwm, xws li WinCE, Linux kernel, Android operating system Lub luag haujlwm ntawm uboot yog pib lub CPU hauv thawj theem, sau rau hauv cov lus sib dhos, pib cache, MMU, moos, saib xyuas, DDR3, eMMC, pib hauv theem thib ob, thiab pib pib ntawm pawg thawj coj.Feem ntau, nws tau sau ua lus C, pib qhov chaw nres nkoj, daim npav network, usb, lcd, thiab muab ntau yam cuab yeej.Nkag mus rau uboot kab hais kom ua, siv qhov hais kom ua ntawm uboot, thiab thauj cov kev khiav haujlwm.
Hais txog Linux kernel:
Lub luag hauj lwm ntawm lub kernel: txheej txheem tswj thiab txheej txheem kev sib txuas lus: txheej txheem creation thiab deletion, preemption preemption ntawm cov txheej txheem, lub sij hawm hlais rotation teem sij hawm ntawm cov txheej txheem, thiab kev sib txuas lus ntawm cov txheej txheem.Kev tswj hwm nco: nco faib algorithm.Qhov chaw nco ntawm txhua tus txheej txheem yog faib los ntawm Linux.Cov ntaub ntawv txhawb nqa tuaj yeem tsom rau Linux tsav tsheb: cov khoom siv ua cim, thaiv cov khoom siv, cov khoom siv hauv network, cuam tshuam, thiab cov moos ntsiav los ntawm miv / proc / filesystems, 4) kev tswj cov cuab yeej.Network raws tu qauv: TCP/IP.Lub vev xaib raug cai ntawm Linux ntsiav:https://www.kernel.org/
Tam sim no, peb cov kev sib txuas lus onu / optical fiber onu tau nkag mus rau peb kev saib xyuas kev ruaj ntseg, kev pab them nqi tsev so thiab kev pab cuam hauv tsev kawm ntawv.Yog tias koj xav paub ntau ntxiv txog kev paub sab hauv ntawm cov khoom, thov nyeem lwm cov ntaub ntawv cuam tshuam!
7. ONU Khoom Foundation CLI
Hais txog peb cov khoom lag luam ntse ONU qauv:
1, flash teeb DEFAULT_ DEVICE_ NAME HUR2102XR // Ntaus-Npe ntawm nplooj ntawv web
2, flash teeb GPON_ ONU_ qauv qhia rau OLT hauv MODE HUR2102XR // GPON hom
3, flash teeb GPON_ ONU_ MODEL HUR2102XR / / Cov qauv qhia rau OLT hauv GPON hom
4, flash teeb GPON_ ONU_ MODEL HUR2102XR / / Cov qauv qhia rau OLT hauv GPON hom
Peb lub tuam txhab cov khoom tseem ceeb olt onu / ac onu / gpon onu / xpon onu / catv onu yog tag nrho cov khoom kub ntawm lub tuam txhab, uas tuaj yeem koom tes nrog kev saib xyuas kev ruaj ntseg, kev pabcuam hauv tsev so thiab kev pabcuam hauv tsev kawm ntawv.Yog tias koj txaus siab, koj tuaj yeem tiv tauj peb ntawm peb lub vev xaib.Peb muaj cov kws tshaj lij R & D pab pawg, ua ntej muag thiab pab pawg tom qab muag.Ntau tus qauv tsim ib puag ncig.Yuav muaj cov kws tshaj lij kev lag luam los qhia peb lub tuam txhab cov ntaub ntawv cov khoom lag luam thiab cov haujlwm ua haujlwm ntawm tus qauv rau koj ua ntej muag, thiab pab pawg kws tshaj lij yuav pab koj tom qab muag.Zoo siab txais tos!
8. Kev piav qhia ntawm sfp optical fiber module
Lub ntsiab lus ntawm optical module: Optical module yog tsim los ntawm optoelectronic li, functional circuits thiab optical interfaces.Cov khoom siv optoelectronic suav nrog ob ntu: kis tau tus mob thiab txais tos.Hauv luv luv, kev ua haujlwm ntawm optical module yog photoelectric hloov dua siab tshiab.Qhov kawg kis tau hloov cov teeb liab hluav taws xob mus rau qhov teeb meem kho qhov muag.Tom qab kis tau los ntawm fiber ntau optical, qhov kawg tau txais hloov pauv cov teeb liab kho qhov muag rau hauv cov teeb liab hluav taws xob.
Hom ntawm optical module:
1, Los ntawm pob: 1X9, GBIC, SFF, SFP, XFP, SFP +, X2, XENPAK, 300pin
2, Kev faib tawm los ntawm hluav taws xob interface: kub plug (gold finger) (5g optical module / 1.25g optical module / 10g optical module), pin vuam style (1 × 9/2 × 9 / SFF)
Feem ntau, cov teeb liab yog ntau tshaj 2.5G, thiab muaj qee qhov poob ntawm lub teeb liab thaum siv tus pin vuam txoj kev.Thaum nws tshaj 10G, koj yuav tsum siv tus ntiv tes kub.Yog li ntawd, tam sim no high-end module hluav taws xob interfaces yog tag nrho nyob rau hauv daim ntawv ntawm cov ntiv tes kub.Txawm li cas los xij, qhov zoo ntawm kab pin vuam yog tias nws yog firmer dua tus ntiv tes kub.Qee qhov tshwj xeeb, cov kab pin vuam interface yuav tsum tau siv.
Yog tias koj xav paub ntau ntxiv txog gigabit ib hom sfp optical module lossis lwm yam khoom siv module, thov hu rau peb ntawm nplooj ntawv home!
9. SFP Kev Sib Txuas Lus Optical Module Structure
Txawm hais tias lub pob, ceev thiab kev sib kis deb ntawm ntau hom optical modules txawv, lawv cov khoom siv sab hauv yog qhov tseem ceeb tib yam.SFP transceiver optical module tau maj mam dhau los ua qhov tseem ceeb ntawm daim ntawv thov vim nws qhov me me, yooj yim kub ntsaws, kev txhawb nqa rau SFF8472 tus qauv, yooj yim analog nyeem ntawv, thiab nrhiav kom tau qhov tseeb (hauv +/- 2dBm).Cov hauv qab no yog ib qho piv txwv ntawm SFP optical module los qhia txog nws cov khoom siv sab hauv thiab cov qauv kev ua haujlwm cuam tshuam:
Lub hauv paus muaj pes tsawg leeg ntawm optical module suav nrog cov hauv qab no:
1. Cov khoom siv kho qhov muag: cov khoom siv kho qhov muag yog cov khoom siv sib xyaw ua ke uas muaj ob peb optoelectronic Cheebtsam thiab IC, cov khoom siv tsis zoo (xws li tsis kam, capacitance, inductance, kev sib nrig sib inductance, microlens, cais), kho qhov muag fiber ntau thiab hlau thaiv, uas yog ua ke thiab ntim ua ke los ua kom tiav ib zaug lossis ntau lub zog.
2. Integrated Circuit Board (PCBA): Tag nrho cov txheej txheem ntawm PCB khoob board mounting los ntawm SMT (chip mounting) los yog los ntawm DIP plug-in, hu ua PCBA.Optical transmitting circuit / optical receiver circuit, nti (tswj nti, cia nti), amplifier (limiting amplifier), moos cov ntaub ntawv rov qab (CDR), ntiv tes golden
3. Plhaub: cov khoom siv sab nraud muaj xws li lub plhaub (cov ntawv hlau sab saud), lub xauv qhov, buckle, hauv paus (zinc alloy die-casting), rub lub nplhaib, roj hmab ntsaws, thiab cov xim ntawm lub nplhaib rub tuaj yeem txheeb xyuas cov yam ntxwv ntawm lub module.
10. Kev soj ntsuam ntawm SMT (SMT) txheej txheem teeb meem ntawm optical module PCB 'A
Qhov ntim ntawm optical module nws tus kheej yog me me, thiab cov khoom siv ntom ntom ntawm nws cov PCB 'A yog qhov loj thiab qhov loj me me.Feem ntau, cov khoom siv nti feem ntau tau ntim rau hauv 0402 pob, thiab 0201 pob kuj tseem maj mam nce.Tsis tas li ntawd, vim hais tias qhov kho qhov muag module yuav tsum tau txuas nrog lub hauv paus chaw nres tsheb los ntawm Golden ntiv tes, qhov teeb meem "kev ua qias tuaj" ntawm Golden ntiv tes hauv cov txheej txheem SMT kuj dhau los ua ib qho ntawm cov txheej txheem nyuaj.
Tsis tas li ntawd, vim muaj kev sib koom ua ke siab, qee qhov kho qhov muag modules PCBA yuav tsum tau txais qee cov txheej txheem kev tsim kho tshiab:
➢ Los ntawm lub qhov txuas (THC: Los Ntawm Qhov Khoom) txais los ntawm lub qhov reflow txheej txheem tshiab (THR: Los ntawm Lub Qhov Reflow);
➢ Lub tshuab luam ntawv hloov tau yooj yim (FPC) thiab cov ntawv luam tawm nyuaj (PCB) yog welded los ntawm kev sib xyaw ntawm cov mos mos thiab tawv boards (FoB: FPC ntawm Board);
➢ 0402 tshiab 3D tiag sib dhos txheej txheem vuam ntawm nti tsis kam thiab capacitance (CoC: Chip on Chip).
Txais tos kom paub ntau ntxiv txog cov khoom paub txog kev sib txuas lus optical module, pluggable optical module, 10MW optical module, optical kev sib txuas lus module, network optical module thiab kev sib txuas lus optical module ntawm peb lub tuam txhab lub vev xaib.Tam sim no, cov khoom siv kho qhov muag tuaj yeem siv rau cov ntaub ntawv sib txuas lus, cov khoom siv hauv computer, kev saib xyuas kev ruaj ntseg thiab kev tswj hwm kev lag luam.
11. Txoj Kev Loj Hlob ntawm Optical Modules
1. Miniaturization
Tam sim no, kev sib tw hauv kev lag luam kev sib txuas lus kho qhov muag tau dhau los ua nruj dua, qhov ntim ntawm cov khoom siv sib txuas lus tau dhau los ua me thiab me, thiab qhov sib txuas ntom ntom muaj nyob rau hauv lub rooj sib tham interface tau nce siab thiab siab dua.Cov tsoos kho qhov muag module cais los ntawm laser thiab ntes tau nyuaj rau hloov mus rau cov kev xav tau ntawm cov khoom siv sib txuas lus niaj hnub no.Txhawm rau ua kom tau raws li cov kev xav tau ntawm cov khoom siv sib txuas lus rau cov khoom siv kho qhov muag, cov khoom siv kho qhov muag tau tsim los ntawm cov pob khoom me me uas sib xyaw ua ke.Kev sib xyaw ua ke ntawm optoelectronic modules ua rau cov neeg siv cov txheej txheem high-speed analog optoelectronic signals, shorten R & D thiab ntau lawm voj voog, txo cov hom kev yuav khoom, thiab txo cov nqi ntau lawm.Yog li ntawd, lawv tau nce kev nyiam los ntawm cov cuab yeej tsim khoom.
2. Tus nqi qis thiab siv hluav taws xob tsawg
Qhov ntim ntawm cov khoom siv sib txuas lus tau txais me dua thiab me dua, thiab cov khoom siv txhawb nqa tau nce qib siab thiab siv hluav taws xob tsawg.Tam sim no, cov khoom siv kho qhov muag feem ntau siv cov txheej txheem sib xyaw ua ke thiab cov txheej txheem ntim cua nruj.Txoj kev loj hlob tom ntej no yuav yog cov ntim tsis-cua-nruj, uas yuav tsum tau cia siab rau qhov kev sib txuas ntawm qhov muag tsis pom kev (tsis yog-XYZ kev taw qhia hloov) thiab lwm yam thev naus laus zis txhawm rau txhim kho qib ntawm automation thiab txo cov nqi.
3. Tus nqi siab
Cov neeg thov ntau thiab ntau cov ntaub ntawv thiab ceev cov ntaub ntawv kis tus nqi.Raws li tus ncej tseem ceeb ntawm kev sib pauv ntaub ntawv niaj hnub no, kev ua haujlwm thiab kev sib txuas lus, kev sib txuas lus kho qhov muag tau tsim los ntawm ultra-high zaus, ultra-high speed thiab ultra-loj peev xwm.Qhov siab dua qhov sib kis tus nqi thiab muaj peev xwm, tus nqi qis dua ntawm kev xa tawm txhua cov ntaub ntawv.
4. Nyob deb
Niaj hnub no lub optical network yog ntau thiab ntau nyob deb, uas yuav tsum tau tej thaj chaw deb transceivers kom phim nws.Lub teeb liab tej thaj chaw deb transceiver tuaj yeem kis tau tsawg kawg 100 mais yam tsis muaj kev nthuav dav.Nws lub hom phiaj tseem ceeb yog kom txuag tau qhov kim kho qhov muag amplifier thiab txo tus nqi ntawm kev sib txuas lus kho qhov muag.Raws li kev txiav txim siab ntawm kev sib kis deb, ntau lub chaw taws teeb transceivers xaiv 1550 band (qhov wavelength ntau yog li 1530 txog 1565 nm) ua haujlwm ua haujlwm, vim tias qhov hluav taws xob xa hluav taws xob tsis tshua muaj nyob hauv qhov ntau, thiab cov khoom siv kho qhov muag muaj tag nrho ua haujlwm. hauv pawg no.
5. Kub pauv
Ntawd yog, lub module tuaj yeem txuas lossis txiav tawm ntawm lub cuab yeej yam tsis tau txiav tawm lub zog hluav taws xob.Vim tias qhov kho qhov muag module yog qhov kub-swappable, tus thawj tswj hwm lub network tuaj yeem hloov kho thiab nthuav dav qhov system yam tsis tau kaw lub network, uas yuav tsis muaj kev cuam tshuam rau cov neeg siv online.Kub plugging kuj yooj yim rau kev saib xyuas tag nrho thiab ua rau cov neeg siv kawg kom tswj tau lawv cov transceiver modules zoo dua.Nyob rau tib lub sijhawm, vim qhov kev sib pauv kub no, qhov module no ua rau cov thawj coj hauv lub network ua kom tag nrho cov kev npaj rau tus nqi transceiver, txuas qhov deb thiab tag nrho cov network topologies raws li kev hloov kho network, yam tsis tau hloov tag nrho cov kab ke system.
12. Cov ntsiab lus tseem ceeb ntawm Cov Hloov Hloov
Cov tsoos LAN siv HUB, uas tsuas muaj ib lub npav xwb, thiab ib lub npav yog qhov tsis sib haum xeeb.Yog li cov tsoos LAN yog ib lub network tiaj tus, thiab LAN belongs rau tib qhov kev tsis sib haum xeeb.Cov lus xa los ntawm ib tus tswv tsev yuav tau txais los ntawm tag nrho lwm lub tshuab hauv tib qhov tsis sib haum xeeb.Tom qab ntawd, lub network choj (txheej txheem 2 hloov) tau siv los hloov lub hub (HUB) hauv kev sib txuas.Txhua qhov chaw nres nkoj tuaj yeem suav tau tias yog lub tsheb npav sib cais, thiab thaj chaw tsis sib haum xeeb raug txo rau txhua qhov chaw nres nkoj, uas txhim kho kev ua haujlwm zoo ntawm lub network xa cov lus unicast thiab txhim kho kev ua tau zoo ntawm txheej 2 network.Yog tias tus tswv tsev xa xov xwm tshaj tawm, lub cuab yeej tseem tuaj yeem tau txais cov lus tshaj tawm.Peb feem ntau hu rau ntau yam ntawm kev tshaj tawm xov xwm tshaj tawm raws li kev tshaj tawm xov xwm.Thaum lub network choj xa cov xov xwm tshaj tawm, nws tseem yuav tsum tau ua ntau cov ntawv luam ntawm cov xov xwm tshaj tawm thiab xa mus rau txhua qhov chaw ntawm lub network.Nrog rau kev nthuav dav ntawm lub network teev, muaj ntau thiab ntau tshaj tawm cov lus tshaj tawm hauv lub network, thiab cov xov xwm tshaj tawm tau siv ntau thiab ntau lub network, uas cuam tshuam rau kev ua haujlwm hauv network.Qhov no yog qhov teeb meem hu ua cua daj cua dub.
Vim muaj kev txwv ntawm txoj cai ua haujlwm ntawm tus choj ob-txheej network, tus choj tsis tuaj yeem ua dab tsi txog kev tshaj tawm cua daj cua dub.Txhawm rau txhim kho kev ua haujlwm ntawm lub network, feem ntau yuav tsum tau faib lub network: faib cov tshaj tawm xov xwm loj rau hauv ntau qhov chaw tshaj tawm me me.
Yav dhau los, LAN feem ntau segmented los ntawm routers.Lub router hauv daim duab hloov pauv lub hauv paus ntawm qhov hloov pauv hauv daim duab dhau los, uas txo qis kev sib kis ntau ntawm cov lus tshaj tawm.Qhov kev daws teeb meem no daws qhov teeb meem ntawm kev tshaj tawm cua daj cua dub, tab sis lub router siv los cais lub network hauv ntu ntawm txheej txheej network.Kev npaj network yog qhov nyuaj, txoj kev sib txuas lus tsis hloov pauv, thiab ua rau muaj kev nyuaj ntawm kev tswj hwm thiab kev saib xyuas.Raws li lwm txoj hauv kev LAN segmentation, virtual LAN tau nkag mus rau hauv cov kev daws teeb meem hauv network los daws cov teeb meem uas tau ntsib los ntawm ob txheej txheej network loj.
Virtual Local Area Network (VLAN) logically faib cov peev txheej hauv network thiab cov neeg siv network raws li qee lub hauv paus ntsiab lus, thiab faib lub network tiag tiag rau hauv ntau qhov sib tham me me.Cov kev sib tham me me no tsim lawv tus kheej tshaj tawm xov xwm, uas yog, virtual LAN VLANs.Hauv daim duab, lub hauv paus hloov pauv tau siv, tab sis sab laug thiab sab xis yog rau VLANs sib txawv, tsim lawv tus kheej tshaj tawm.Kev tshaj tawm xov xwm tsis tuaj yeem kis tau thoob plaws cov chaw tshaj tawm no.
Virtual LAN logically faib ib pawg ntawm cov neeg siv ntawm qhov sib txawv ntawm lub cev sib txuas ua ke rau hauv LAN, uas yog qhov pib zoo ib yam li ib txwm LAN hauv kev ua haujlwm thiab kev ua haujlwm, thiab tuaj yeem muab kev sib txuas ntawm cov davhlau ya nyob twg hauv qee qhov ntau.
13. EPON ONU/GPON ONU Qhov txawv, Plaub Hlis 6, 2022
Cov qauv sib txawv (PON system)
EPON: IEEE 802.3ah.Cov qauv no sib txuas Ethernet thiab PON thev naus laus zis.PON thev naus laus zis yog siv nyob rau hauv lub cev txheej thiab Ethernet raws tu qauv siv nyob rau hauv cov ntaub ntawv txuas txheej kom ua tiav PON network nkag.
GPON: ITU-TG.984 series tus qauv, raws li kev sib txuas lus sib txuas (TC) txheej, tuaj yeem ua tiav qhov kev hloov pauv ntawm cov kev pabcuam siab sib txawv.
Tus nqi sib txawv
EPON muab taag uplink thiab downlink 1.25Gbps;EPON txhawb qhov siab tshaj plaws shunt piv ntawm 1:64;
GPON txhawb nqa uplink thiab downlink asymmetric tus nqi, nrog downlink 2.5Gbps lossis 1.25G thiab uplink 1.25Gbps;
GPON txhawb qhov siab tshaj plaws ntawm 1: 128 (tus nqi theoretical);
Kev thov thiab kev txhim kho
EPON: tus nqi qis thiab kev saib xyuas yooj yim, uas yog qhov kev xaiv ntawm cov neeg ua haujlwm feem ntau nyob rau theem pib
GPON: Cov qauv zoo meej, kev pabcuam kev pabcuam zoo thiab cov kev xav tau siab yog cov qauv ntawm kev siv kho qhov muag network
GPON tus qauv system yog tiag tiag "qhib", uas yog sib koom sib tham thiab txhim kho los ntawm plaub lub koom haum loj (ITU-T SG15 Q2, FSAN, Broadband Forum, ATIS NIPP);
EPON tus qauv tau pib los ntawm IEEE thiab txhim kho los ntawm cov neeg ua haujlwm hauv ntau lub tebchaws, uas yog "kaw"
14. Kev taw qhia yooj yim rau Software Functions ntawm ONU Cov Khoom
ONU software interface qauv tau muab faib ua ob hom:
(1) Nkag mus rau Webpage
(2) Kev teeb tsa Webpage
ONU-khawm:
Ntsiab lus: RST, WPS, WIFI
Qhov chaw: sab los yog pem hauv ntej (hardware design)
Muaj nuj nqi: Pib dua los kho lub Hoobkas nqis, nias thiab tuav rau 5-10S, thiab tom qab ntawd tso tawm
WIFI pab, qhib lossis kaw WIFI muaj nuj nqi
WPS WIFI tiv thaiv teeb tsa: nias tus yuam sij WPS, thiab WPS qhov taw qhia yuav nyem.Lub sijhawm no, tus neeg siv WIFI tuaj yeem siv WPS kev sib txuas los ua kom tiav qhov kev sib txuas hauv wireless ib txwm tsis nkag mus rau SSID lo lus zais.
Optical fiber connectors siv los ntawm peb cov khoom ONU:
SC/UPC
➢ Cov Neeg Siv Khoom Txuas / Txheem
➢ Push hom, yooj yim rau thauj thiab tshem tawm
➢ yog qhov sib txuas ntau tshaj plaws.Lub teeb yuag, me me, yooj yim rau kev khiav lag luam
➢ PON chaw nres nkoj rau OLT thiab ONU
SC/APC
➢ Angled Physical Contact
➢ Sib tsoo thiab txhuam lub microsphere nto ntawm lub kaum sab xis ntawm 8 degrees
➢ Rov qab poob ≥ 60dB, feem ntau siv hauv cable TV network los xa CATV teeb liab
Loop-Detect: Chaw nres nkoj voj nrhiav kom tau: Xa cov lus tshwj xeeb ntawm lub cuab yeej cov chaw nres nkoj thiab xyuas seb cov lus puas tuaj yeem xa los ntawm.Qhov chaw nres nkoj lo lus uas peb tau txais dua los txiav txim seb puas muaj loopback ntawm qhov chaw nres nkoj.Yog tias muaj lub tswb xa los ntawm lub cuab yeej, kaw qhov chaw nres nkoj.Tom qab lub voj raug tshem tawm, rov qhib qhov chaw nres nkoj thiab tshaj tawm lub tswb kom tshem tawm.
Thaum siv ONU cov khoom, nws yuav koom nrog peb tswj ONU li cas:
Plaub hom kev tswj hwm ntawm ONU
WEB Management
CLI Management
OAM/OMCI Management
TR069/SNMP
15. ONU-OAM/OMCI
OAM
√ Kev Ua Haujlwm, Kev Tswj Xyuas & Kev Tu
√ International standard IEEE 802.3 ah, domestic txheem CTC 3.0
√ OAM yog cov txheej txheem kev sib cuam tshuam ntawm ONU thiab EPON OLT hauv EPON hom "cov txheej txheem tshawb pom" "txuas txuas" "nug thiab teeb tsa" " tswb"
OMCI
√ ONT Tswj & Tswj Interface "ONT Tswj & Tswj Interface"
√ International txheem ITU-T G984.x ITU-T G988
√ OMCI yog kev sib cuam tshuam ntawm ONU thiab GPON OLT hauv GPON hom
SNMP - Yooj Yim Network Management Protocol
Nws yog siv rau kev tswj hwm chaw ua haujlwm los tswj xyuas txhua yam khoom siv hauv lub network uas txhawb nqa cov txheej txheem, suav nrog kev nug cov xwm txheej hauv lub network, hloov kho lub network teeb tsa, thiab tau txais cov ntaub ntawv ceeb toom xwm txheej hauv network."Configuration Management" "Fault Management" "Performance Management" "Security Management"
Ob lub ntsiab lus tseem ceeb ntawm SNMP yog MIB (Kev Tswj Xyuas Cov Ntaub Ntawv Hauv Paus) thiab OID (Cov Ntawv Qhia Txog Tus Kheej)
Kev tswj cov ntaub ntawv hauv paus MIB: txhais cov ntaub ntawv tswj hwm uas tuaj yeem siv tau ntawm lub cuab yeej.Tus neeg sawv cev thiab chaw tswj hwm siv MIB ua cov ntaub ntawv sib koom ua ke rau kev sib txuas lus
Object identifier OID: khoom tswj los ntawm MIB (tus cim tshwj xeeb)
Piv txwv li, 1.3.6.1.2.1.1.1.0 Tau txais cov ntaub ntawv tseem ceeb (SysDesc)
16. Network Topology
√ WiFi tuaj yeem sib txuas los ntawm kev sib txawv network topologies, thiab nws qhov kev tshawb pom thiab nkag mus rau lub network kuj muaj nws tus kheej cov cai thiab cov kauj ruam.WiFi wireless network suav nrog ob hom topology: infrastructure thiab ad-hoc.Ob lub ntsiab lus tseem ceeb: chaw nres tsheb (STA): qhov tseem ceeb tshaj plaws ntawm lub network.Txhua lub davhlau ya nyob twg txuas nrog lub wireless network (xws li lub laptop, PDA thiab lwm yam khoom siv uas tuaj yeem txuas nrog lub network) tuaj yeem hu ua chaw nres tsheb.Wireless access point (AP): tus tsim ntawm wireless network thiab lub hauv paus ntawm lub network.Feem ntau, lub wireless router siv hauv tsev lossis chaw ua haujlwm yog AP.Channel, qhov tseem ceeb (xws li WEP), network raws tu qauv (xws li DHCP), kev sib txuas, thiab lwm yam yuav tsum tau teeb tsa.Cov neeg siv khoom yog desktop, notebook, handheld computer thiab lwm yam khoom siv.
√ Basic wireless network raws li AP
√ Tsim los ntawm AP thiab tsim los ntawm ntau STAs
√ AP yog qhov chaw nruab nrab ntawm tag nrho cov network
√ STA tsis tuaj yeem sib txuas lus ncaj qha rau ib leeg thiab yuav tsum tau xa los ntawm AP.Cov hauv qab no yog cov khoom lag luam ntawm peb lub tuam txhab GPON OLT / XPON OLT / OLT ONU / AC ONU / xov tooj ONU / WIFI ONU / CATV ONU rau kev siv:
17. OSI 7-Layer Network Architecture
√ Lub cev txheej: 802.11b txhais cov ntaub ntawv kis tus nqi ntawm 11Mbps ua haujlwm nyob rau hauv 2.4GHz ISM zaus band Lub cev txheej siv zaus-hopping kis spectrum kis tshuab (Frequency-hopping Spread Spectrum, FHSS) thiab Direct Sequence Spread Spectrum, DSSS)
√ MAC txheej: MAC txheej muab ntau lub zog los txhawb kev ua haujlwm wireless network.Los ntawm MAC txheej chaw Koj tuaj yeem tsim lub network lossis nkag mus rau lub network uas twb muaj lawm thiab xa cov ntaub ntawv mus rau LLC txheej.
√ LLC txheej: IEEE802.11 siv tib LLC txheej thiab 48-ntsis MAC chaw nyob raws li IEEE802.2 Chaw Nyob, uas ua rau tus choj ntawm wireless thiab wired yooj yim heev.Tab sis MAC chaw nyob tsuas yog tshwj xeeb rau WLAN txiav txim.
√ Network txheej: IP raws tu qauv tau txais, uas yog cov txheej txheem tseem ceeb tshaj plaws hauv Is Taws Nem Cov Txheej Txheem yuav tsum tau ua raws thaum sib txuas lus.
√ Thauj txheej: TCP / UDP raws tu qauv raug saws.TCP yog kev sib txuas-taw qhia raws tu qauv thiab tuaj yeem muab IPReliable kis tau tus mob nyob rau hauv ib puag ncig;UDP yog cov txheej txheem txuas tsis txuas uas tsis muab kev ntseeg siab rau IP
√ Kev xa tawm.Rau cov ntawv thov kev ntseeg siab, cov txheej txheem thauj feem ntau siv TCP raws tu qauv.Daim ntawv thov txheej: siv raws li daim ntawv thov, xws li HTTP raws tu qauv, DNS (Domain name System, sau npe daws teeb meem system) raws tu qauv.Tam sim no, Haidiwei tsuas yog muab cov txheej txheem sib txuas thiab cov khoom siv sib kis, xws li: txhua qhov hloov kho qhov muag, SFP optical module, GPON OLT, GPON ONU series, raws li qhia hauv daim duab hauv qab no:
18. ONU+STB Gateway Box, Lub Plaub Hlis 7, 2022
Tam sim no, raws li tus neeg siv khoom siv davhlau ya nyob twg, ONU yog ib qho khoom siv cais tawm ntawm lub npov digital TV.Nws txuas nrog rau lub thawv teeb tsa saum toj kawg nkaus los ntawm tus neeg siv interface ntawm ONU hauv EPON system.Thaum tiam tom ntej ntawm kev sib txuas lus sib txuas mus rau FTTH, txhua tsev neeg xav tau ob lub davhlau ya nyob twg, ib lub npov saum toj thiab ib ONU, uas yuav nkim neeg siv qhov chaw thiab ua rau cov neeg siv khoom hnyav ntxiv.Lub sijhawm no, 9602C ONU + STB cov khoom siv thev naus laus zis tau dhau los ua lub hom phiaj ntawm kev lag luam.Los ntawm kev sib xyaw ua haujlwm ntawm ONU rau hauv lub thawv teeb tsa, kev ua haujlwm ntawm lub npov saum toj kawg nkaus yuav muaj zog dua, cov ntaub ntawv ua haujlwm ceev yuav nrawm dua, thiab daim ntawv thov kev cia siab yuav dav.
Tam sim no, txoj kev loj hlob ntawm IPTV yog feem ntau ntsib nrog cov kev tsis sib haum xeeb ntawm yuav ua li cas tawg los ntawm kev txwv ntawm broadband, thiab qhov tseem ceeb ntawm kev nkag mus rau kev sib txuas lus ntawm fiber ntau hauv tsev.10G-PON nkag mus rau qhov muag pom kev network tsis tuaj yeem tso cai rau cov neeg siv mloog thiab saib cov kev pabcuam zoo nkauj thiab zoo nkauj xws li HD, UHD, 3D, tab sis kuj muab cov neeg siv nrog cov kev pabcuam hauv Is Taws Nem muaj zog xws li kev kho mob hauv online, hauv online. kev qhia, kev lag luam hauv online, kev sib tham hauv lub suab, kev sib txuas lus video, thiab lwm yam, Nws tuaj yeem ua lub luag haujlwm ntawm tus neeg saib xyuas hauv tsev, muab cov neeg siv kev ruaj ntseg hauv tsev zoo heev, hauv tsev Internet ntawm Yam thiab lwm yam kev pabcuam hauv tsev ntse.Txhawm rau daws cov teeb meem saum toj no, Shenzhen Haidiwei Optoelectronic Technology Co., Ltd. tau thov rau "9602C ONU + STB" R & D project.Rau lub hom phiaj no, nws tau mob siab rau kev kho dua tshiab, tshawb fawb ntau dua high-tech thiab high-volume technical support, thiab tshawb fawb ntxiv cov khoom siv network tshiab thiab tsim nyog rau feem coob ntawm cov pab pawg.
19. MINI Square ONU
Cov khoom siv ONU tam sim no feem ntau yog tsim los ntawm ONU nti, BOSA (Bi-direction Optical Subassembly) bidirectional optical transceiver module, fais fab module, luam tawm Circuit Board thiab lub plhaub tiv thaiv;Lub ONU nti, kho qhov muag module thiab lub zog module tau ntim rau ntawm lub rooj tsavxwm luam tawm;Ib qho kawg ntawm nws BOSA yog ib qho txuas nrog pigtail, uas yog tsau rau ntawm lub rooj tsav xwm luam tawm thiab siv rau docking nrog optical fiber connector los ntawm optical kab davhlau ya nyob twg OLT;Lwm qhov kawg ntawm BOSA kuj txuas nrog lub rooj tsav xwm PCB;Cov qauv no ua rau lub ntim loj ntawm tag nrho cov khoom ONU, nyob qhov chaw thiab tsis yooj yim rau nruab, thiab nws yog qhov nyuaj rau tawm hauv lub tais fiber ntau.Yuav ib txwm muaj ib feem ntawm cov khoom siv kho qhov muag pom, uas yog qhov tsis tshua muaj kev cuam tshuam rau cov teeb meem xws li fiber ntau tawg thiab teeb liab hloov pauv tsis ua haujlwm tshwm sim los ntawm sab nraud rog.Txhawm rau daws cov teeb meem saum toj no, "MINI ONU square" kev tshawb fawb thiab kev tsim kho qhov project tau muab tso rau pem hauv ntej.Rau lub hom phiaj no, kev txhim kho kev lag luam tau ua tiav, kev tshawb fawb ntau dua high-tech thiab high-volume technical support, thiab ntau dua tshiab thiab tsim nyog network khoom tau tshawb fawb.Shenzhen Haidiwei Optoelectronics muab ntau hom GPON ONU / WIFI ONU / ODM kev pabcuam, muab kev pabcuam ib zaug rau cov neeg siv khoom ntawm hom kev lag luam no.
20. MINI Transceiver
Cov tsoos optical fiber transceiver yog Ethernet kis xov xwm hloov dua siab tshiab chav tsev uas sib pauv luv luv twisted khub hluav taws xob teeb liab thiab qhov ntev ntawm kev kho qhov muag teeb liab, uas txuas ntxiv qhov kev sib txuas ntawm Ethernet thiab rhuav tshem qhov kev ncua deb ntawm 100 meters siv twisted khub.Optical fiber ntau transceivers feem ntau yog siv nyob rau hauv qhov tseeb network ib puag ncig qhov twg Ethernet cable tsis tuaj yeem npog thiab kho qhov muag fiber ntau yuav tsum tau siv los txuas ntxiv kev sib kis, thiab feem ntau yog nyob rau hauv daim ntawv thov txheej txheej ntawm broadband cheeb tsam network.Feem ntau, hluav taws xob interface ntawm optical fiber transceiver ntawm kev ua lag luam yog txuas ncaj qha nrog lub ntsiab nti.Nyob rau hauv cov ntaub ntawv ntawm tam sim ntawd hloov ntawm input voltage los yog tam sim no, tus kis tau tus mob thiab zoo yuav raug cuam tshuam, thiab lub ntsiab nti yuav yooj yim puas.Txhawm rau daws cov teeb meem saum toj no, "IC + 175 MINI transceiver" R&D project yog npaj: txhawm rau txhim kho cov thev naus laus zis, kawm ntau dua cov thev naus laus zis thiab cov khoom siv hluav taws xob siab, thiab kawm ntxiv cov khoom siv network tshiab thiab tsim nyog rau feem coob. ntawm pawg.Nyob rau tib lub sijhawm, peb lub tuam txhab xav kom lub tuam txhab nyiaj txiag teeb tsa tus accounting accounting ywj pheej rau kev tshawb fawb thiab kev txhim kho cov nqi ntawm qhov project, thiab cov nyiaj yuav raug tswj hwm tshwj xeeb.Lub tuam txhab kev lag luam yuav tsum ntxiv dag zog rau kev tswj hwm qhov project, thiab lwm lub tuam txhab ntawm lub tuam txhab yuav tsum muab kev pab thiab kev koom tes raws li qhov yuav tsum tau ua ntawm pab pawg R & D project kom ntseeg tau tias kev ua tau zoo thiab ua tiav qhov project.Shenzhen Haidiwei Optoelectronic Technology Co., Ltd. muab kev hloov kho qhov muag fiber ntau thiab ODM kev pabcuam
21. Powered POE nano transceiver
Nyob rau hauv cov txheej txheem kho qhov muag fiber ntau thaiv kev teeb tsa, cov khoom siv hluav taws xob hloov pauv yuav tsum tau teeb tsa, thaum cov khoom siv hluav taws xob hloov pauv hluav taws xob uas twb muaj lawm siv ib hom fais fab mov, uas yog, kom tau txais lub zog ua haujlwm los ntawm lwm cov khoom siv hluav taws xob kom muaj kev ruaj ntseg.Txawm li cas los xij, thaum lub hwj chim tau txais qhov chaw nres nkoj ntawm cov khoom siv hluav taws xob hloov pauv tsis ua haujlwm, lossis cov khoom siv hluav taws xob tsis ua haujlwm, cov khoom siv hloov pauv photoelectric yuav tsis ua haujlwm ib txwm, yog li cuam tshuam rau cov txheej txheem ua haujlwm.Txhawm rau daws cov teeb meem saum toj no, "IC + nano PD POE transceiver" R&D project yog npaj: txhawm rau txhim kho cov thev naus laus zis, kawm ntau cov thev naus laus zis thiab cov khoom siv hluav taws xob siab, thiab kawm ntau dua tshiab thiab tsim nyog network khoom siv rau lub feem coob ntawm pawg.Nyob rau tib lub sijhawm, peb lub tuam txhab xav kom lub tuam txhab nyiaj txiag teeb tsa tus accounting accounting ywj pheej rau kev tshawb fawb thiab kev txhim kho cov nqi ntawm qhov project, thiab cov nyiaj yuav raug tswj hwm tshwj xeeb.Lub tuam txhab kev lag luam yuav tsum ntxiv dag zog rau kev tswj hwm qhov project, thiab lwm lub tuam txhab ntawm lub tuam txhab yuav tsum muab kev pab thiab kev koom tes raws li qhov yuav tsum tau ua ntawm pab pawg R & D project kom ntseeg tau tias kev ua tau zoo thiab ua tiav qhov project.
22. Optical Network Unit ONU
OLT: optical kab davhlau ya nyob twg, uas tswj ntau lub davhlau ya nyob twg (ONUs).Nws kuj yog ib qho cuab yeej ntawm kev nkag mus rau sab nraud network thiab sab hauv network nkag.Lub luag hauj lwm: muab lub network sab interface rau optical access network thiab sib txuas lus nrog ONU ntawm cov neeg siv sab los ntawm ib los yog ntau tshaj ODNs.Kev sib raug zoo ntawm OLT thiab ONU yog kev sib txuas lus tus tswv- qhev.ODN: optical faib network, feem ntau hu ua optical splitter.Lub teeb liab txoj kev kho qhov muag ntawm lub cev kab yog faib rau cov khoom siv ntawm ntau lub terminals (ONUs).Lub luag haujlwm: Nws muab kev sib kis tau zoo ntawm OLT thiab ONU.Nws lub luag haujlwm tseem ceeb yog ua kom tiav txoj haujlwm ntawm lub teeb liab optical zog.ODN yog ib qho kev sib koom ua ke ntawm cov khoom siv kho qhov muag uas muaj cov khoom siv kho qhov muag (xws li optical fiber thiab cable, optical connector thiab optical splitter).ONU: optical network chav tsev;Feem ntau, nws tuaj yeem nkag siab tias yog lub tsev router lossis hloov.Qhov sib txawv tseem ceeb ntawm cov cuab yeej siv hauv kev sib tw sib tw zoo tib yam yog tias muaj qhov chaw nres nkoj optical ntxiv.Muaj nuj nqi: Nws muab cov chaw taws teeb rau cov neeg siv-sab interface rau qhov kho qhov muag nkag network, uas nyob ntawm tus neeg siv sab ntawm ODN.OAN yog ib qho kev nkag tau siv cov tshuab fiber ntau optical kis tau tus mob, uas yog, kev sib txuas lus ntawm cov chaw hloov chaw hauv zos thiab cov neeg siv siv cov khoom siv fiber ntau kis tau los ntawm tag nrho lossis ib feem.Optical access network yuav muab faib ua passive optical network (PON) thiab active optical network (AON).Piv nrog rau ob hom optical networks, kev txhim kho ntawm passive optical network yuav nrawm dua ntawm cov nqi.Raws li qhov chaw tshwj xeeb ntawm ONU hauv kev siv kho qhov muag network, OAN tuaj yeem muab faib ua ntau hom kev siv sib txawv: 1) Optical fiber rau hlws ris lub thawv (FTTCab) 2) Optical fiber rau txoj kev (FTTCub) 3) Optical fiber ntau rau lub tsev ( FTTB) 4) Optical fiber ntau rau tsev (FTTH) thiab kho qhov muag fiber ntau rau chaw ua haujlwm (FTTO) PON thev naus laus zis: PON yog ib leeg-fiber ob txoj kev siv kho qhov muag pom kev sib txuas nrog point-to-multipoint (P2MP) qauv, thiab nws cov qauv topology yog hom ntoo
23. Yuav ua li cas paub qhov txawv ntawm optical access network OLT thiab ONU
OLT yog dab tsi?
Lub npe tag nrho ntawm OLT yog Optical Line Terminal.OLT yog lub davhlau ya nyob twg kho qhov muag, uas yog lub chaw ua haujlwm kawg ntawm kev sib txuas lus.Nws yog siv los txuas optical fiber trunk kab.Nws ua raws li kev hloov lossis router hauv kev sib txuas lus ib txwm siv, thiab yog ib qho khoom siv ntawm qhov nkag ntawm lub network sab nraud thiab nkag ntawm lub network sab hauv.Thaum kawg ntawm qhov chaw ua haujlwm, qhov tseem ceeb tshaj plaws kev ua haujlwm yog kev teem caij tsheb, kev tswj tsis tau, thiab cov neeg siv-oriented passive optical network interface thiab bandwidth faib.Hauv cov ntsiab lus yooj yim, nws yog kom paub txog ob txoj haujlwm: nkag mus rau PON network;Rau cov dej ntws qis, cov ntaub ntawv tau txais yuav raug xa thiab xa mus rau txhua tus neeg siv ONU cov khoom siv davhlau ya nyob twg los ntawm ODN network.
ONU yog dab tsi?
ONU yog qhov kho qhov muag network unit.ONU muaj ob txoj haujlwm: xaiv tau qhov kev tshaj tawm xa los ntawm OLT, thiab tau txais thiab teb rau OLT yog tias nws xav tau txais cov ntaub ntawv;Sau thiab cache cov ntaub ntawv Ethernet uas cov neeg siv yuav tsum xa, thiab xa cov ntaub ntawv cached mus rau OLT lub davhlau ya nyob twg raws li lub qhov rais xa tawm.
Hauv FTTx network (nias ntawm no kom paub ceev ceev txog FTTx), cov kev xa tawm sib txawv ntawm ONU nkag kuj sib txawv, piv txwv li, FTTC (Fiber To The Curb): ONU muab tso rau hauv nruab nrab lub computer chav ntawm lub xov tooj ntawm tes;FTTB (Fiber Rau Lub Tsev): ONU muab tso rau hauv lub thawv sib txuas ntawm txoj kev hauv tsev;FTTH (Fiber To The Home): ONU muab tso rau hauv tus neeg siv hauv tsev.
24. Txog Yuav Siv Gigabit Optical Modules li cas nrog Hloov
Yuav ua li cas kom phim optical modules thiab keyboards ib txwm yog qhov teeb meem kub hauv kev lag luam.Qhov kev sib tw ntawm cov keyboards thiab optical modules tsis tsuas yog txiav txim siab seb lawv puas tuaj yeem siv ib txwm siv tom qab kev sib txuas, tab sis tseem cuam tshuam seb lub network system tuaj yeem hloov kho nrog tus nqi qis thiab kev ua haujlwm siab nyob rau theem tom ntej.Yog li ntawd, HDV yuav tsom mus rau yuav ua li cas siv gigabit optical modules nrog keyboards.Rau qhov hloov, qhov chaw nres nkoj kho qhov muag ntawm tus ncej hloov feem ntau tuaj yeem txhawb kev siv gigabit optical module rau 10-gigabit optical chaw nres nkoj, thiab kev siv 100-gigabit optical module rau gigabit interface, uas yog, ceev cia. .Txawm li cas los xij, qhov uplink optical chaw nres nkoj ntawm lub thawv hloov tsis txhawb qhov kev txo qis saum toj no, thiab qhov chaw nres nkoj kho qhov muag tuaj yeem txhawb nqa qhov kev txo qis saum toj no raws li ib txwm muaj.Txawm li cas los xij, feem ntau tsis pom zoo kom txo qhov ceev ntawm lub teeb chaw nres nkoj.Yog li ntawd, gigabit optical module thiab gigabit hloov yog qhov kev xaiv zoo tshaj plaws.
Lub gigabit optical module yog raws li nyob rau hauv ntau daim ntawv thov scenarios: cov ntaub ntawv kev sib txuas lus, computer consumables, cov ntaub ntawv chaw, kev ruaj ntseg xyuas, thiab kev lag luam tswj.
25. Peb cov khoom siv OLT
OLT yog qhov kho qhov muag kab davhlau ya nyob twg.Nws yog OLT network kev tswj hwm raws li CLI, WEB thiab NMS, uas yog siv los txuas cov khoom siv davhlau ya nyob twg ntawm cov khoom siv fiber ntau.Raws li qhov theoretical system ntawm EPON system, OLT nkag siab txog nws txoj haujlwm ua haujlwm, txheeb xyuas cov kev xav tau ntawm kev lag luam ntawm cov kab hluav taws xob kho qhov muag, sib txawv ntawm cov haujlwm tseem ceeb, thiab sib tham txog cov haujlwm ntawm txhua feem ntawm EPON system.Qhov zoo ntawm OLT yog qhov me me, cov cuab yeej siv yooj yim, kev teeb tsa qis thiab kev saib xyuas tus nqi, thiab kev nqis peev me me.Cov khoom siv kho qhov muag pom tau yooj yim hauv kev sib txuas, thiab nws cov topology tuaj yeem txhawb nqa tsob ntoo, hnub qub, tsheb npav, hybrid, redundant thiab lwm yam network topologies.Yooj yim rau nruab, nws muaj hom sab hauv tsev thiab sab nraum zoov.Nws cov duab sab nrauv tuaj yeem dai ncaj qha rau ntawm phab ntsa lossis muab tso rau ntawm tus ncej "H", tsis tas yuav xauj lossis tsim chav tshuab.Txawm li cas los xij, lub cev muaj zog xav tau kev hloov pauv photoelectric thiab electro-optical, thiab cov cuab yeej tsim khoom raug nqi siab.Nws yuav tsum tau siv cov chaw tshwj xeeb thiab chav tshuab.Qhov teeb meem ntawm cov khoom siv hluav taws xob tej thaj chaw deb yog qhov nyuaj los daws, thiab kev ua haujlwm tu txhua hnub yog qhov loj.Passive optical network yog tsim rau kev sib txuas lus point-to-multipoint.Tsuas yog passive optical splitter yog siv los paub kho qhov muag fais fab faib.Passive optical network yog ib qho nruab nrab nruab nrab network, uas tsis txhob cuam tshuam electromagnetic cuam tshuam thiab xob laim cuam tshuam, thiab nws yog qhov tsim nyog rau kev siv hauv thaj chaw uas tsis zoo.Los ntawm kev xav ntawm kev txhim kho thev naus laus zis, kev nthuav dav ntawm passive optical network yog qhov yooj yim, thiab tsis koom nrog kev hloov khoom siv.Tsuas yog cov cuab yeej siv software txhim kho yuav tsum tau ua.Cov khoom siv kho vajtse tau yuav ib zaug thiab siv tau ntev, uas tso lub hauv paus rau cov khoom siv fiber ntau nkag mus rau hauv tsev thiab ua kom cov peev txheej ntawm cov neeg siv.
