OLTyitheminali yomgca wokukhanya,I-ONUyiyunithi yomsebenzi womnatha obonakalayo (I-ONU), zonke zizixhobo zonxibelelwano zothumelo lwenethiwekhi. Zimbini iimodyuli eziyimfuneko kwi-PON: I-PON (Inethiwekhi ye-Passive Optical: inethiwekhi ye-optical network). I-PON (inethiwekhi ye-optical passive) ibhekisela ku (inethiwekhi yokusabalalisa i-optical) ayiqulathanga naziphi na izixhobo zombane kunye nonikezelo lwamandla ombane, i-ODN iqulunqwe zizixhobo ezingabonakaliyo ezifana ne-optical splitter (Splitter), ayifuni izixhobo zombane ezisebenzayo ezibizayo. Umsebenzi womnatha womnatha wokusebenza uquka i-terminal yelayini yokubona (OLT) efakwe kwisikhululo solawulo esisembindini, kunye nebhetshi yeeyunithi ezixhasayo zothungelwano lwamehlo (Ii-ONU) efakwe kwindawo yomsebenzisi. Inethiwekhi yonikezelo lwamehlo (ODN) phakathi kweOLTkwayeI-ONUiqulethe iifibers optical kunye ne-passive splitters okanye i-couplers.
Iiruthakwayeiiswitshizizixhobo zokutshintshiselana ngedatha.
I-ODN (i-Optical Distribution Network) yinethiwekhi yentambo ye-FTTH esekelwe kwizixhobo ze-PON. Indima yayo kukubonelela ngejelo lokuhanjiswa kwe-optical phakathi kweOLTkwaye iI-ONU. Ngokombono wokusebenza, i-ODN inokwahlulwa ibe ngamacandelo amane: i-subsystem ye-feeder optical cable, i-subsystem ye-optical cable yokusabalalisa, i-subsystem ye-cable optical cable kunye ne-fiber optical terminal subsystem ukusuka ekupheleni kweofisi ukuya ekupheleni komsebenzisi.
I-ONT yinxalenye ebalulekileyo yeI-ONU.
I-FTTB "ifayibha ebonakalayo kwisakhiwo", i-16Ii-ONUzibekwe kwibhokisi yeyunithi kwipaseji. Kukho ii-ONT ezili-16 kwiI-ONU. I-ONT nganye ikhupha intambo yenethiwekhi (umqondiso wombane) kwaye ifikelela ekupheleni komsebenzisi ngamnye ngentambo yenethiwekhi kwi-corridor.
I-FTTH "i-fiber-to-ekhaya", ibeka i-1 ukuya kwi-16 i-splitter kwibhokisi yeyunithi kwi-corridor, kwaye ifike kumsebenzisi ngamnye ngefayibha egqunyiweyo kwi-corridor, kwaye umsebenzisi ngamnye uphelisa i-ONT. Ilingana nokudilizwa kweI-ONU, ukuze isixhobo se-terminal sisondele ngokungenasiphelo kumsebenzisi.
I-ONT inokuqondwa njengeI-ONUngezibuko elinye kuphela.