OLTndi optical line terminal,ONUndi optical network unit (ONU), onse ndi zida zolumikizirana ndi ma netiweki. Ndi ma module awiri ofunikira mu PON: PON (Passive Optical Network: passive Optical network). PON (passive Optical network) amatanthauza (optical distribution network) ilibe zipangizo zamagetsi ndi magetsi, ODN imapangidwa ndi zipangizo zamakono monga optical splitter (Splitter), sikutanthauza zipangizo zamagetsi zotsika mtengo. A passive optical network imaphatikizapo optical line terminal (OLT) yoikidwa pa siteshoni yapakati yolamulira, ndi gulu la mayunitsi othandizira optical network (ONU) idayikidwa patsamba la ogwiritsa ntchito. The Optical Distribution Network (ODN) pakati paOLTndiONUimakhala ndi ulusi wowoneka bwino komanso ma splitter kapena ma couplers.
Ma routersndimasiwichindi zida zosinthira deta.
ODN (Optical Distribution Network) ndi FTTH kuwala chingwe netiweki zochokera PON zida. Ntchito yake ndikupereka njira yolumikizira kuwala pakati paOLTndiONU. Kuchokera pamawonedwe ogwirira ntchito, ODN ikhoza kugawidwa m'magawo anayi: gawo laling'ono la feeder optical, subsystem yogawa, chingwe chamkati chamkati, chingwe chamkati chamkati ndi makina opangira ma fiber optical kuchokera kumapeto kwa ofesi mpaka kumapeto kwa wogwiritsa ntchito.
ONT ndi gawo lofunikira laONU.
FTTB "optical fiber to the building", 16ONUamaikidwa mu bokosi la unit mu korido. Pali 16 ONTs muONU. ONT iliyonse imatulutsa chingwe cha netiweki (chizindikiro chamagetsi) ndikufikira kumapeto kwa wogwiritsa ntchito kudzera pa chingwe cha netiweki pakhonde.
FTTH "fiber-to-the-home", ikani 1 mpaka 16 ziboda mu bokosi unit mu khonde, ndiyeno kufika aliyense wosuta kudzera CHIKWANGWANI yokutidwa mu kanjira, ndi wosuta aliyense kuthetsa ndi ONT. Ndikofanana ndi kumasulaONU, kotero kuti zida zomaliza zimakhala pafupi kwambiri ndi wogwiritsa ntchito.
ONT ikhoza kumveka ngatiONUndi doko limodzi lokha.