ONU (Optical Network Unit) optical network unit, ONU muab faib ua active optical network unit thiab passive optical network unit. Feem ntau, cov khoom siv uas muaj kev saib xyuas network suav nrog optical receivers, upstream optical transmitters, thiab ntau lub bridge amplifiers hu ua optical nodes. Lub PON siv ib lub optical fiber los txuas rau OLT, thiab tom qab ntawd OLT txuas rau ONU. ONU muab cov kev pabcuam xws li cov ntaub ntawv, IPTV (piv txwv li kev sib tham hauv network TV), thiab lub suab (siv IAD, piv txwv li Integrated Access Device), ua tiav cov ntawv thov "triple-play".
Cov yam ntxwv
Xaiv kom tau txais cov ntaub ntawv tshaj tawm uas OLT xa tuaj;
Teb rau cov lus txib tswj hwm thiab tswj hwm lub zog uas OLT tau tshaj tawm; thiab ua qhov kev hloov kho kom raug;
Khaws cov ntaub ntawv Ethernet ntawm tus neeg siv thiab xa mus rau qhov upstream hauv lub qhov rai xa uas OLT tau muab faib;
Ua raws li IEEE 802.3 / 802.3ah tag nrho;
· Kev txais kev rhiab heev yog siab txog -25.5dBm;
· Xa fais fab mus txog -1 txog + 4dBm;
PON siv ib lub fiber ntau optical los txuas rau OLT, thiab tom qab ntawd OLT txuas rau ONU. ONU muab cov kev pabcuam xws li cov ntaub ntawv, IPTV (piv txwv li kev sib tham hauv network TV), thiab lub suab (siv IAD, piv txwv li Kev Sib Koom Tes Nkag Mus), ua tiav cov ntawv thov "triple-play";
· Tus nqi siab tshaj plaws PON: symmetrical 10Gb / s upstream thiab downstream cov ntaub ntawv, VoIP lub suab thiab IP video kev pabcuam;
· ONU "plug thiab ua si" raws li kev tshawb pom thiab teeb tsa tsis siv neeg;
· Cov haujlwm zoo tshaj plaws ntawm kev pabcuam (QoS) raws li daim ntawv cog lus theem kev pabcuam (SLA) kev them nqi;
· Muaj peev xwm tswj hwm chaw deb uas txhawb nqa los ntawm cov haujlwm OAM nplua nuj thiab muaj zog;
· Kev txais lub teeb pom kev zoo thiab kev siv hluav taws xob tsawg;
Txhawb nqa kev ua haujlwm ntawm Dying Gasp;
Kev faib tawm
Lub teeb ci ntsa iab
Lub tshuab ua haujlwm optical network feem ntau yog siv thaum peb lub network sib koom ua ke, thiab nws sib koom ua ke CATV full-band RF output; zoo VOIP audio; peb-txheej routing hom, wireless nkag mus thiab lwm yam haujlwm, uas tuaj yeem yooj yim paub txog peb-ua si kev koom ua ke davhlau ya nyob twg khoom siv nkag mus.
Lub teeb tsis txav
Passive ONU (Optical Network Unit) yog ib lub cuab yeej siv ntawm GEPON (Gigabit Passive Optical Network) system, uas yog siv los xaus cov kev pabcuam xa los ntawm OLT (Optical Line Terminal) los ntawm EPON (Passive Optical Network). Kev koom tes nrog OLT, ONU tuaj yeem muab ntau yam kev pabcuam broadband rau cov neeg siv txuas nrog. Xws li kev tshawb nrhiav hauv Is Taws Nem, VoIP, HDTV, VideoConference thiab lwm yam kev pabcuam. ONU, ua ib lub cuab yeej siv rau FTTx daim ntawv thov, yog ib lub cuab yeej siv tau bandwidth siab thiab pheej yig rau kev hloov pauv ntawm "lub sijhawm tooj liab cable" mus rau "lub sijhawm fiber ntau". Raws li qhov kev daws teeb meem kawg rau cov neeg siv khoom siv wired, GEPON ONU yuav ua lub luag haujlwm tseem ceeb hauv kev tsim kho network ntawm NGN (Next Generation Network) yav tom ntej.
UTStarcom ONU 1001i yog ib lub cuab yeej siv tau yooj yim thiab siv tau rau hauv GEPON systems. Nws yog tsim los rau cov neeg siv hauv tsev thiab cov neeg siv SOHO, thiab muab kev sib txuas gigabit broadband rau cov neeg siv gateways thiab/lossis PCs. ONU 1001i muab ib qho chaw nres nkoj network 1000Base-TEthernet rau cov ntaub ntawv thiab IPTV video services. ONU1001i tuaj yeem teeb tsa thiab tswj hwm los ntawm UTStarcom BBS series optical line terminal (OLT).
daim ntawv thov
Qhov upstream ntawm ONU 1001i txuas nrog lub chaw ua haujlwm hauv nruab nrab (CO) los ntawm qhov chaw nres nkoj GEPON, thiab qhov downstream yog rau cov neeg siv ib tus zuj zus lossis cov neeg siv SOHO los muab 1 Gigabit Ethernet network chaw nres nkoj. Raws li kev daws teeb meem yav tom ntej ntawm FTTx, ONU 1001i muab lub suab muaj zog, cov ntaub ntawv ceev ceev thiab cov kev pabcuam video los ntawm ib-fiber GEPON.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-10-2021