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    Mekhoa ea phihlello ea FTTX e thehiloeng ho PON ke efe?

    Nako ea poso: Aug-08-2020

    Papiso ea phihlello ea FTTX e thehiloeng ho PON

    Mokhoa oa hajoale oa ho fihlella marang-rang oa marang-rang o thehiloe haholo ho phihlello ea FTTX e thehiloeng ho PON. Likarolo tse kholo le menahano e amehang tlhahlobong ea litšenyehelo ke tse latelang:

    ● Litšenyehelo tsa lisebelisoa tsa karolo ea phihlello (ho kenyeletsoa lisebelisoa tse fapaneng tsa phihlello le lithapo, joalo-joalo, li lekantsoe ho mosebelisi e mong le e mong)

    ● Litšenyehelo tsa kaho ea boenjiniere (ho kenyeletsoa litefello tsa kaho le litšenyehelo tse ling, hangata 30% ea kakaretso ea theko ea thepa)

    ● Litšenyehelo tsa ts'ebetso le tlhokomelo (hangata e ka ba 8% ea kakaretso ea litšenyehelo ka selemo)

    ●Sekhahla sa ho kenya ha se nkoe (ke hore, sekhahla sa ho kenya ke 100%).

    ● Theko e hlokahalang ea thepa e baloa ho latela mefuta e 500 ea basebelisi

    Tlhokomeliso ea 1: phihlello ea FTTX ha e nahane ka litšenyehelo tsa kamore ea k'homphieutha ea sechaba;

    Tlhokomeliso ea 2: ADSL2+ ha e na molemo ha e bapisoa le ADSL ha sebaka sa ho fihlella se le 3km. VDSL2 ha joale ha e sebelisoe haholo, kahoo ha ho papiso e tla etsoa bakeng sa nako;

    Tlhokomeliso ea 3: Phihlello ea fiber ea Optical e na le melemo e hlakileng libakeng tse telele.

    FTTB + LAN

    Ofisi e bohareng e tsamaisoa ka fiber ea optical (3km) ho ea ho kopanngoaswitjhaya sebaka sa bodulo kapa moaho, mme ebe e hokeletswa mapasengswitjhaka fiber ea optical (0.95km), ebe e tsamaisoa ho isa pheletsong ea mosebelisi ho sebelisoa thapo ea Sehlopha sa 5 (0.05km). E baloang ho latela mohlala oa basebelisi ba 500 (ntle le ho nahana ka litšenyehelo tsa kamore ea sele), bonyane pokello e le 'ngoe ea li-port tse 24.switjhale 21 24-port phasejengli-switcheslia hlokahala. Tšebelisong ea sebele, boemo bo eketsehileng baswitjhae eketsoa ka kakaretso. Leha palo yohle yali-switchese eketseha, tšebeliso ea mefuta e tlase ea theko e tlaseli-switchese fokotsa litšenyehelo kaofela.

    FTTH

    Nahana ka ho behaOLTofising e bohareng, ho na le fiber e le 'ngoe ea optical (4km) ho ea kamoreng ea k'homphieutha e bohareng, ka kamoreng ea k'homphieutha e bohareng ka 1: 4 optical splitter (0.8km) ho ea phasejeng, le 1: 8 optical splitter (0.2km). ) sebakeng sa mosebelisi oa phasejeng. E baloa ho latela mohlala oa basebelisi ba 500 (ntle le ho nahana ka litšenyehelo tsa kamore ea lisele): Theko eaOLTlisebelisoa li abetsoe ka tekanyo ea basebelisi ba 500, e hlokang kakaretso ea 16OLTlikou.

    FTTC+EPON+LAN

    Hape nahana ka ho behaOLTofising e bohareng. Khoele e le 'ngoe ea optical (4km) e tla romelloa kamoreng e bohareng ea komporo ea sechaba. Kamore e bohareng ea komporo ea sechaba e tla feta ka 1:4 optical splitter (0.8km) ho ea moahong. Phaseng e 'ngoe le e 'ngoe, ho tla sebelisoa 1:8 optical splitter (0.2km). ) Eya mokatong o mong le o mong, ebe o hokela setsing sa mosebelisi ka mela ea Sehlopha sa 5. Emong le emongONUe na le mosebetsi oa ho fetola Layer 2. Ho nahanoa ka horeONUe na le likou tsa 16 FE, ke hore, e 'ngoe le e 'ngoeONUe ka fihlella basebelisi ba 16, e baloang ho latela mohlala oa basebelisi ba 500.

    FTTC+EPON+ADSL/ADSL2+

    Bakeng sa ts'ebeliso e ts'oanang ea DSLAM e tlase, nahana ka ho behaOLTofising e bohareng, le fiber e le 'ngoe (5km) ho tloha ofising ea ho qetela ea BAS ho ea ofising ea kakaretso, 'me qetellong, e feta ka 1:8 optical splitter (4km) ho eaONUka kamoreng ea k'homphieutha e bohareng ba sele. TheONUe hokahane ka kotloloho le DSLAM ka sebopeho sa FE, ebe e hokahantsoe le pheletso ea mosebelisi ka mohala o sothehileng (1km) oa koporo. E boetse e baloa ho latela mohlala oa mosebelisi oa 500 o hokahaneng le DSLAM ka 'ngoe (ntle le ho nahana ka litšenyehelo tsa kamore ea selefouno).

    Point-to-point optical Ethernet

    Ofisi e bohareng e sebelisoa ka fiber ea optical (4km) ho ea ho aggregationswitjhaea sechaba kapa ea moaho, ebe e romelloa ka kotloloho ho mosebelisi ka fiber ea optical (1km). E baloang ho latela mohlala oa basebelisi ba 500 (ntle le ho nahana ka litšenyehelo tsa kamore ea sele), bonyane 21 24-port aggregationli-switcheslia hlokahala, 'me lipara tse 21 tsa lik'hilomithara tse 4 tsa li-backbone optical fibers li behiloe ho tloha kamoreng ea k'homphieutha ea ofisi ho ea kopanong.li-switchesseleng. Kaha point-to-point optical Ethernet ha e sebelisoe hangata bakeng sa phihlello ea marang-rang libakeng tsa bolulo, hangata e sebelisoa feela bakeng sa marang-rang a basebelisi ba bohlokoa ba hasaneng. Ka hona, lefapha la eona la kaho le fapane le mekhoa e meng ea ho fihlella, kahoo mekhoa ea ho bala le eona e fapane.

    Ho tsoa tlhahlobisong e ka holimo, ho ka bonoa hore ho behoa ha optical splitter ho tla ba le tšusumetso e tobileng ho sebelisoa ha fiber, e leng hape e amang litšenyehelo tsa mohaho oa marang-rang; theko ea hona joale ea lisebelisoa tsa EPON e fokotsoa haholo ke "burst optical transmit/receive module" le "core control module" / Chips le litheko tsa module ea E-PON li lula li theoleloa ho fihlela litlhoko tsa 'maraka; ha ho bapisoa le xDSL, theko ea nako e le 'ngoe ea ho kenya PON e phahame, 'me hajoale e sebelisoa haholo-holo libakeng tse sa tsoa hahoa kapa tse hahiloeng bocha libakeng tse teteaneng tsa basebelisi. Point-to-point optical Ethernet e loketse feela bareki ba hasaneng ba mmuso le ba likhoebo ka lebaka la theko ea eona e phahameng. Ho sebelisa FTTC+E-PON+LAN kapa FTTC+EPON+DSL ke tharollo e molemohali ea ho fetela ho FTTH butle-butle.



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