Igikoresho cya ONU ni iki?

ONU (Optical Network Unit) ifite urusobe rw'itumanaho ry'amajwi, ONU igabanyijemo igice cy'urusobe rw'itumanaho ry'amajwi n'igice cy'urusobe rw'itumanaho ry'amajwi ritakoreshejwe. Muri rusange, ibikoresho bifite uburyo bwo kugenzura urusobe rw'amajwi birimo ibyuma bifata amashusho, ibyuma bitanga amakuru by'amajwi bizamuka, n'ibindi bikoresho byinshi by'ikoranabuhanga byitwa "nodes optique". PON ikoresha fibre imwe y'ikoranabuhanga kugira ngo ihuze na OLT, hanyuma OLT ihuze na ONU. ONU itanga serivisi nka data, IPTV (ni ukuvuga televiziyo ihuza amakuru), n'ijwi (ikoresheje IAD, ni ukuvuga Integrated Access Device), ikora porogaramu "zitatu".

Ibiranga

Hitamo kwakira amakuru yoherejwe na OLT;

Gusubiza amabwiriza yo kugenzura imiterere n'ingufu yatanzwe na OLT; no gukora impinduka zijyanye nayo;

Kanda amakuru ya Ethernet y'umukoresha hanyuma uyohereze ku idirishya ryo kohereza ryatanzwe na OLT;

Kubahiriza byimazeyo IEEE 802.3/802.3ah;

·Kwakira ubushobozi bwo kumva ibintu bugera kuri -25.5dBm;

·Kohereza imbaraga kugeza kuri -1 kugeza kuri +4dBm;

PON ikoresha fibre imwe y'urumuri kugira ngo ihuze na OLT, hanyuma OLT ihuze na ONU. ONU itanga serivisi nka data, IPTV (ni ukuvuga televiziyo ihuza abantu), n'ijwi (ikoresheje IAD, ni ukuvuga Integrated Access Device), ikora porogaramu "zitatu zikina";

·PON ifite igiciro cyo hejuru: 10Gb/s ingana n'amakuru yo hejuru n'ayo hasi, serivisi za VoIP voice na IP videwo;

· ONU “plug and play” ishingiye ku kuvumbura no gushyiraho uburyo bwikora;

·Imikorere ihanitse ya serivisi (QoS) ishingiye ku masezerano yo ku rwego rwa serivisi (SLA);

·Ubushobozi bwo gucunga kure bushyigikiwe n'imikorere ikomeye kandi ikomeye ya OAM;

· Kwakira urumuri rwinshi kandi rukoresha ingufu nke z'urumuri rwinjira;

·Gushyigikira imikorere y'umwuka upfa;

Gushyira mu byiciro

Urumuri rukora

Igice cy’umuyoboro wa optique gikoreshwa cyane cyane iyo imiyoboro itatu ihujwe, kandi gihuza CATV full-band RF output; amajwi ya VOIP meza; uburyo bwo gukwirakwiza amakuru mu byiciro bitatu, uburyo bwo kwinjira mu buryo butarimo umugozi n’izindi nshingano, bishobora gutuma ibikoresho bitatu bigerwaho mu buryo bworoshye.

Itara ridakora

Passive ONU (Optical Network Unit) ni igikoresho cyo ku ruhande rw'umukoresha cya sisitemu ya GEPON (Gigabit Passive Optical Network), ikoreshwa mu guhagarika serivisi zoherezwa kuva kuri OLT (Optical Line Terminal) binyuze kuri EPON (Passive Optical Network). Ikorana na OLT, ONU ishobora gutanga serivisi zitandukanye za interineti ku bakoresha bahujwe. Nka interineti, VoIP, HDTV, VideoConference n'izindi serivisi. ONU, nk'igikoresho cyo ku ruhande rw'umukoresha kuri porogaramu za FTTx, ni igikoresho cyo ku ruhande rw'umukoresha gifite bandwidth nyinshi kandi gihendutse gikenewe kugira ngo umuntu ava mu "gihe cy'umuringa" ajya mu "gihe cy'umugozi". Nk'igisubizo cy'ibanze ku bakoresha, GEPON ONU izagira uruhare runini mu kubaka umuyoboro rusange wa NGN (Next Generation Network) mu gihe kizaza.

UTStarcom ONU 1001i ni igikoresho cy’ikoranabuhanga gihendutse gikoreshwa muri sisitemu za GEPON. Yagenewe abakoresha bo mu rugo n’abakoresha SOHO, kandi itanga umurongo wa interineti wa gigabit ku marembo y’abakoresha na/cyangwa mudasobwa. ONU 1001i itanga umuyoboro umwe wa 1000Base-TEthernet ku makuru na serivisi za videwo za IPTV. ONU1001i ishobora gushyirwaho no gucungwa na UTStarcom BBS series optical line terminal (OLT).

ubusabe

Igice cyo hejuru cya ONU 1001i gihujwe n'ibiro bikuru (CO) binyuze kuri port ya GEPON, kandi igice cyo hasi ni icy'abakoresha ku giti cyabo cyangwa abakoresha ba SOHO gutanga port 1 ya network ya Gigabit Ethernet. Nk'igisubizo cy'ejo hazaza cya FTTx, ONU 1001i itanga serivisi zikomeye z'amajwi, amakuru yihuta cyane na videwo binyuze muri GEPON imwe.