Cibiyar sadarwa ta gani ita ce hanyar sadarwa wacce ke amfani da haske azaman hanyar watsawa, mai maye gurbin wayoyi na jan karfe, kuma ana amfani da ita don shiga kowane gida. Cibiyar sadarwar gani gabaɗaya ta ƙunshi sassa uku: tashar layin ganiOLT, Naúrar hanyar sadarwa ta ganiONU, da ODN na cibiyar sadarwa mai rarraba gani, wanda ainihin abubuwan da ke cikinOLTkumaONUhanyar sadarwa ta hanyar gani.
MeneneOLT?
Cikakken sunanOLTshine Tashar Layin gani, tashar layin gani.OLTtashar tashar layin gani ce, kuma ita ce kayan aiki na ofishin cibiyar sadarwa. Ana amfani da shi don haɗa kututturen fiber na gani. Yana aiki azaman acanza or na'ura mai ba da hanya tsakanin hanyoyin sadarwaa cikin hanyar sadarwar gargajiya. Na'ura ce don mashigar cibiyar sadarwa ta waje da mashiga da fita na cibiyar sadarwa ta ciki. An sanya shi a babban ofishi, mafi mahimmancin ayyukan aiwatarwa shine tsarin zirga-zirga, sarrafa buffer, da samar da mu'amalar hanyar sadarwa mai ma'ana ta mai amfani da rarraba bandwidth. A cikin sauƙi mai sauƙi, yana aiwatar da ayyuka guda biyu: sama, yana kammala samun damar hanyar sadarwa ta PON; kuma a ƙasa, yana aika bayanan da aka samu ga kowaONUkayan aikin tashar mai amfani ta hanyar hanyar sadarwar ODN.
MeneneONU?
ONUshi ne na'urar sadarwa ta Optical Network. TheONUyana da ayyuka guda biyu: Zaɓi karɓar watsa shirye-shiryen da aka aikoOLT, kuma karbi amsa gaOLTidan bayanan suna buƙatar karɓar; tattara da cache bayanan Ethernet wanda mai amfani ke buƙatar aikawa, kuma aika zuwa gaOLTbisa ga taga aikawa da aka ware Aika bayanan da aka adana.
Hanyoyin turawa naONUa cikin hanyoyin sadarwa na FTTx daban-daban kuma sun bambanta. Misali, FTTC (Fiber To The Curb):ONUan sanya shi a cikin tsakiyar ɗakin kwamfuta na al'umma; FTTB (Fiber Zuwa Ginin):ONUan sanya shi a cikin akwatin junction na corridor; FTTH (Fiber Zuwa Gida):ONUan sanya shi a cikin masu amfani da gida.
Menene ONT?
ONT ita ce tashar tashar sadarwa ta Optical, mafi girman rukunin FTTH, wanda aka fi sani da "katsin gani", kama da xDSL cat na lantarki. ONT tashar tashar sadarwa ce ta gani kuma ana amfani da ita don masu amfani na ƙarshe.ONUyana nufin rukunin cibiyar sadarwa na gani. Wataƙila akwai wasu hanyoyin sadarwa tsakaninta da mai amfani na ƙarshe. ONT wani bangare ne naONU.
Menene alakar dake tsakaninONUkumaOLT?
TheOLTshine karshen gudanarwa, da kumaONUtashar tashar ne; daONUAna isar da samar da sabis ta hanyarOLT, kuma su biyun suna cikin dangantakar ubangida da bawa. Da yawaONUza a iya rataye shi ta hanyar tsaga karkashin waniOLT.
Menene ODN?
ODN ita ce hanyar sadarwa ta Rarraba gani, wacce ita ce tashar zahiri ta watsawar gani tsakaninOLTkumaONU. Babban aikin shine kammala watsa siginar gani na gani biyu. Yawancin lokaci waɗannan ana haɗa su ta hanyar igiyoyin fiber optic, masu haɗin gani, masu rarraba gani, da shigarwa. Kayan aikin tallafi na na'urar sun ƙunshi masu rarraba gani.
