OLT: Imatanthawuza ku terminal ya optical line yomwe timagwiritsa ntchito, komanso ndi zida zomaliza zomwe zimagwiritsidwa ntchito kulumikiza thunthu la fiber.
ONU: ONUimatanthawuza gawo la optical network.ONUimagawidwa kukhala yogwira ntchito yamagetsi yamagetsi ndi gawo la passive optical network.Nthawi zambiri, zida zomwe zimakhala ndi kuwunika kwa netiweki kuphatikiza optical receiver, uplink optical transmitter ndi amplifiers angapo mlatho zimatchedwa "optical node".
OLT ndiye zida zamaofesi mu EPON passive Optical network system.Ndi nsanja yopereka ntchito zambiri, yomwe imatha kuthandizira mautumiki a IP ndi ntchito zachikhalidwe za TDM nthawi yomweyo.Ndi chipangizo chomwe chimayikidwa m'mphepete mwa netiweki ya metropolitan area komanso pakutuluka kwa network access network, yomwe imatha kusinthanitsa ntchito zofikira ndikuzipereka ku netiweki ya IP motsatana.
TheONU1001i uplink imagwirizanitsa ndi ofesi yapakati kudzera pa doko la GEPON, ndipo downlink ikhoza kupereka madoko a gigabit Ethernet kwa ogwiritsa ntchito payekha kapena ogwiritsa ntchito ena.Monga yankho lamtsogolo la FTTx,ONU1001i imapereka mau amphamvu, data yothamanga kwambiri komanso mavidiyo kudzera mu GEPON ya fiber single.ONUntchito: sankhani kulandira deta yotumizidwa ndi OLT;Yankhani ku malamulo oyambira komanso owongolera mphamvu otumizidwa ndi OLT;Ndipo sinthani molingana;Deta ya Ethernet ya wogwiritsa ntchito imasungidwa ndikutumizidwa kumtunda wamtunda pawindo lotumizira loperekedwa ndi OLT.
