Iyini idivayisi ye-ONU?

Iyunithi yenethiwekhi ye-ONU (Optical Network Unit), i-ONU ihlukaniswe yaba iyunithi yenethiwekhi yokubona esebenzayo kanye neyunithi yenethiwekhi ye-passive optical network.Ngokuvamile, amadivaysi afakwe ukuqapha kwenethiwekhi okuhlanganisa izamukeli ezibonakalayo, ama-transmitters optical akhuphukayo, nama-amplifiers amaningi amabhuloho abizwa ngokuthi ama-optical nodes.I-PON isebenzisa i-fiber optical eyodwa ukuze ixhume ku-OLT, bese i-OLT ixhuma ku-ONU.I-ONU ihlinzeka ngezinsizakalo ezifana nedatha, i-IPTV (okungukuthi inethiwekhi yenethiwekhi yokuxhumana), kanye nezwi (kusetshenziswa i-IAD, okungukuthi Idivayisi Yokufinyelela Ehlanganisiwe), eqaphela ngempela izinhlelo zokusebenza "zokudlala kathathu".

Izici

Khetha ukuthola idatha yokusakaza ethunyelwe yi-OLT;

Phendula emiyalweni ehlukahlukene kanye neyokulawula amandla ekhishwe i-OLT;futhi wenze izinguquko ezihambisanayo;

Gcina idatha ye-Ethernet yomsebenzisi bese uyithumela enhla nomfula ewindini lokuthumela elinikezwe i-OLT;

Ukuthobela ngokugcwele i-IEEE 802.3/802.3ah;

·Ukuthola ukuzwela kuphakeme njengokungu -25.5dBm;

·Dlulisa amandla aze afike ku--1 ukuya ku-+4dBm;

I-PON isebenzisa i-optical fiber eyodwa ukuze ixhume ku-OLT, bese i-OLT ixhuma ku-ONU.I-ONU ihlinzeka ngamasevisi afana nedatha, i-IPTV (okungukuthi inethiwekhi yenethiwekhi yokuxhumana), kanye nezwi (kusetshenziswa i-IAD, okungukuthi i-Integrated Access Device), ibona izinhlelo zokusebenza “zokudlala kathathu”;

·Izinga eliphezulu kakhulu le-PON: i-symmetrical 10Gb/s idatha ekhuphukayo nephansi komfula, izinsiza zezwi le-VoIP nevidiyo ye-IP;

·ONU “plug and play” esekelwe ekutholeni okuzenzakalelayo nokucushwa;

·Ikhwalithi ethuthukisiwe yemisebenzi yesevisi (QoS) esekelwe ekukhokheleni izinga lesevisi yesivumelwano (SLA);

·Amandla okuphatha kude asekelwa imisebenzi ye-OAM ecebile nenamandla;

·Ukuthola ukukhanya okuzwelayo okuphezulu kanye nokusebenzisa amandla okukhanya okokufaka okuphansi;

·Sekela umsebenzi we-Diing Gasp;

Ukwahlukanisa

Ukukhanya okusebenzayo

Iyunithi yenethiwekhi ye-optical esebenzayo isetshenziswa ikakhulukazi lapho amanethiwekhi amathathu ehlanganisiwe, futhi ihlanganisa ukuphuma kwe-RF ye-CATV egcwele ibhendi;izinga eliphezulu lomsindo we-VOIP;imodi yomzila enezendlalelo ezintathu, ukufinyelela okungenantambo kanye neminye imisebenzi, engabona kalula ukufinyelela kwemishini yokugcina yokuhlanganisa imidlalo emithathu.

Ukukhanya kwe-passive

I-Passive ONU (Optical Network Unit) iyisisetshenziswa eseceleni komsebenzisi sesistimu ye-GEPON (Gigabit Passive Optical Network), esetshenziselwa ukunqamula izinsiza ezidluliselwa zisuka ku-OLT (Optical Line Terminal) nge-EPON (Passive Optical Network).Ukusebenzisana ne-OLT, i-ONU ingahlinzeka ngezinsizakalo ezihlukahlukene ze-broadband kubasebenzisi abaxhunyiwe.Okufana nokuntweza nge-inthanethi, i-VoIP, i-HDTV, i-VideoConference nezinye izinsiza.I-ONU, njengedivayisi eseceleni komsebenzisi yezinhlelo zokusebenza ze-FTTx, iyisisetshenziswa sokugcina somkhawulokudonsa esiphezulu futhi esingabizi kakhulu esidingekayo ukuze kushintshwe isuka “enkathini yekhebula yethusi” iye “enkathini yefiber optical”.Njengesixazululo sokugcina sokufinyelela kwezintambo kwabasebenzisi, i-GEPON ONU izodlala indima ebalulekile ekwakhiweni kwenethiwekhi kukonke kwe-NGN (Next Generation Network) esikhathini esizayo.

I-UTStarcom ONU 1001i iyisisetshenziswa esibulalayo somsebenzisi esingabizi esisetshenziswa ezinhlelweni ze-GEPON.Yenzelwe abasebenzisi basekhaya kanye nabasebenzisi be-SOHO, futhi inikeza ukuxhumana kwe-gigabit broadband kumasango abasebenzisi kanye/noma ama-PC.I-ONU 1001i inikeza imbobo yenethiwekhi eyodwa ye-1000Base-TEthernet ngedatha namasevisi wevidiyo we-IPTV.I-ONU1001i ingalungiselelwa ukude futhi iphathwe yi-UTStarcom BBS series optical line terminal (OLT).

isicelo

Umfula okhuphukayo we-ONU 1001i uxhumeke ehhovisi elimaphakathi (CO) ngembobo ye-GEPON, futhi umfula ongezansi ungowabasebenzisi ngabanye noma abasebenzisi be-SOHO ukunikeza imbobo yenethiwekhi ye-Gigabit Ethernet engu-1.Njengesixazululo sesikhathi esizayo se-FTTx, i-ONU 1001i inikeza izwi elinamandla, idatha yesivinini esikhulu namasevisi wevidiyo nge-GEPON ye-fiber eyodwa.