Ni gute watandukanya umuyoboro wa OLT, ONU, ODN, ONT?

Umuyoboro w’itumanaho ukoresha urumuri nk'uburyo bwo kohereza amakuru, aho gukoresha insinga z'umuringa, kandi ukoreshwa mu kugera kuri buri rugo. Umuyoboro w’itumanaho ukoresha urumuri. Muri rusange, umuyoboro w’itumanaho ugizwe n'ibice bitatu: umurongo w’itumanaho ukoresha urumuri OLT, igice cy’itumanaho rikoresha urumuri ONU, umuyoboro w’itumanaho ukoresha urumuri ODN, muri byo OLT na ONU ni byo bice by'ingenzi by'umuyoboro w’itumanaho ukoresha urumuri.

OLT ni iki?

Izina ryuzuye rya OLT ni Optical Line Terminal, terminal y'umurongo wa optique. OLT ni terminal y'umurongo wa optique n'ibikoresho by'ibiro by'itumanaho. Ikoreshwa mu guhuza imirongo ya fibre optique. Ikora nk'imashini cyangwa router mu muyoboro w'itumanaho usanzwe. Ni igikoresho kiri ku muryango w'umuyoboro wo hanze n'umuryango w'umuyoboro w'imbere. Ishyizwe ku biro by'ishami, imirimo y'ingenzi ni uguteganya igihe cy'urujya n'uruza rw'itumanaho, kugenzura uburyo bwo gufunga, no gutanga imiyoboro ya optique ikoreshwa n'umukoresha ndetse no gutanga bandwidth. Mu magambo make, ni ukugira ngo igere ku mirimo ibiri. Ku muyoboro wo hejuru, irangiza uburyo bwo kugera ku muyoboro wa PON; ku muyoboro wo hasi, amakuru yabonetse yoherezwa kandi agakwirakwizwa ku bikoresho byose by'umuyoboro wa ONU binyuze kuri network ya ODN.

ONU ni iki?

ONU ni Optical Network Unit. ONU ifite imirimo ibiri: yakira neza ubutumwa bwoherejwe na OLT, kandi igasubiza OLT niba amakuru akeneye kwakirwa; ikusanya kandi igashyiramo amakuru ya Ethernet umukoresha akeneye kohereza, hanyuma ikayohereza kuri OLT hakurikijwe idirishya ryagenewe kohereza. Kohereza amakuru yashyizwe mu bubiko.

Mu muyoboro wa FTTx, uburyo butandukanye bwo gukoresha ONU nabwo buratandukanye, nka FTTC (Fiber To The Curb): ONU ishyirwa mu cyumba cya mudasobwa cyo hagati mu muryango; FTTB (Fiber To The Instruction): ONU ishyirwa mu cyumba cya FTTH (Fiber To The Home): ONU ishyirwa mu muyoboro wa FTTH.

ONT ni iki?

ONT ni Optical Network Terminal, igice kinini cya FTTH, kizwi cyane nka "optical modem", gisa na modem y'amashanyarazi ya xDSL. ONT ni terminal ya optical network, ikoreshwa ku mukoresha wa nyuma, mu gihe ONU ivuga ishami rya optical network, kandi hashobora kuba hari indi miyoboro hagati yayo n'umukoresha wa nyuma. ONT ni igice cy'ingenzi cya ONU.

Ni iyihe sano iri hagati ya ONU na OLT?

OLT ni terminal y'ubuyobozi, naho ONU ikaba terminal; serivisi ya ONU itangwa binyuze muri OLT, kandi byombi biri mu mubano w'umukoresha n'umugaragu. ONU nyinshi zishobora guhuzwa na OLT imwe binyuze mu gice cyo gutandukanya.

ODN ni iki?

ODN ni Umuyoboro w’Ikwirakwizwa ry’Amatara, umuyoboro w’Ikwirakwizwa ry’Amatara, ni umuyoboro uhuza OLT na ONU, imikorere y’ingenzi ni ukuzuza uburyo bwo kohereza ibimenyetso by’amatara mu buryo bubiri, akenshi hakoreshejwe insinga za fibre, imiyoboro y’amatara, imiyoboro y’amatara no gushyiraho ibi. Igice cy’ibikoresho by’igikoresho gishyigikira, igice cy’ingenzi ni umuyoboro w’amatara.