OLT ke optical line terminal, ONU ke optical network unit (ONU), kaofela ke lisebelisoa tsa khokahano ea marang-rang ea optical transmission.Ke li-module tse peli tse hlokahalang ho PON: PON (Passive Optical Network: passive optical network).PON (passive optical network) e bua ka (network optical distribution) ha e na lisebelisoa leha e le life tsa elektronike le matla a motlakase, ODN e entsoe ka lisebelisoa tse sa sebetseng tse kang optical splitter (Splitter), ha e hloke lisebelisoa tsa elektronike tse sebetsang ka theko e boima.Maqhubu a marang-rang a marang-rang a kenyelletsa "Optical Line Terminal" (OLT) e kentsoeng setsing sa taolo se bohareng, le sehlopha sa li-unit tse tšehetsang marang-rang (ONUs) tse kentsoeng sebakeng sa mosebelisi.The optical distribution network (ODN) pakeng tsa OLT le ONU e na le li-optical fibers le li-splitter tse sa sebetseng kapa li-couplers.
Li-routers le li-switches ke lisebelisoa tsa phapanyetsano ea data.
ODN (Optical Distribution Network) ke FTTH optical cable network e thehiloeng ho thepa ea PON.Mosebetsi oa eona ke ho fana ka mocha oa phetiso ea optical lipakeng tsa OLT le ONU.Ho ea ka pono ea ts'ebetso, ODN e ka aroloa likarolo tse 'ne: mochini o fepang optical cable subsystem, sistimi e tsamaisang optical cable, indoor cable optical subsystem le optical fiber terminal subsystem ho tloha pheletsong ea ofisi ho isa pheletsong ea mosebelisi.
ONT ke karolo ea bohlokoa ea ONU.
FTTB "fiber optical ho ea mohahong", 16 ONUs e behoa ka lebokoseng la lihlopha ka har'a coridor.Ho na le li-ONT tse 16 ho ONU.E 'ngoe le e' ngoe ea ONT e hlahisa thapo ea marang-rang (letšoao la motlakase) 'me e fihla pheletsong e 'ngoe le e' ngoe ea mosebelisi ka mohala oa marang-rang ka har'a coridor.
FTTH "fiber-to-the-home", beha 1 ho 16 splitter ka lebokoseng la yuniti phasejeng, 'me joale fihla mosebedisi e mong le e ka faeba e koahetsoeng phasejeng,' me mosebedisi e mong le e mong o felisa ONT.Ho tšoana le ho qhaqha ONU, e le hore thepa ea ho qetela e be haufi haholo le mosebedisi.
ONT e ka utloisisoa e le ONU e nang le kou e le 'ngoe feela.