OLThe tauranga raina whatu,ONUhe wae whatunga whatu (ONU), he taputapu hononga whatunga whakawhiti whatu katoa. E rua nga waahanga e tika ana i roto i te PON: PON (Passive Optical Whatunga: whatunga whatu hāngū). PON (whatunga whatu hāngū) e pā ana ki (whatunga tohatoha whatu) kahore i roto i tetahi taputapu hiko, me te supply mana hiko, tito ODN te o ngā pūrere hāngū pērā i whati splitter (Splitter), e kore e rapu utu taputapu hiko kaha. Kei roto i te whatunga whatu hāngū he kāpeka raina whatu (OLT) i whakauruhia ki te teihana whakahaere pokapū, me te roopu o nga waahanga whatunga whatu (Nga ONU) kua whakauruhia ki te pae kaiwhakamahi. Ko te whatunga tohatoha whatu (ODN) i waenganui i teOLTaONUkei roto i nga muka whatu me nga whakawehe hāngū, hononga hono ranei.
Pouaraawhakakāhe taputapu whakawhiti raraunga.
Ko te ODN (Optical Distribution Network) he whatunga taura whatu FTTH i runga i nga taputapu PON. Ko tana mahi he whakarato i tetahi hongere whakawhiti whatu i waenga i ngaOLTme teONU. Mai i te tirohanga mahi, ka taea te wehea te ODN ki nga wahanga e wha: ko te punaha taura whatu kai whangai, ko te tohatoha o te taura whatu, ko te taura o roto o te taura o roto me te punaha kapeka muka whatu mai i te tari mutunga ki te mutunga o te kaiwhakamahi.
Ko te ONT tetahi waahanga nui oONU.
FTTB “muka whatu ki te whare”, 16Nga ONUka whakanohoia ki roto i te pouaka wae i te kauhanga. E 16 nga ONT kei roto i teONU. Ka whakaputahia e ia ONT he taura whatunga (tohu hiko) ka tae atu ki ia pito kaiwhakamahi ma te taura whatunga i te kauhanga.
FTTH “fiber-to-the-home”, hoatu he wehenga 1 ki te 16 ki roto i te pouaka wae i te kauhanga, ka tae atu ki ia kaiwhakamahi ma te muka hipoki i roto i te kauhanga, ka whakamutua e ia kaiwhakamahi he ONT. He rite ki te wetewete i teONU, kia tata tonu nga taputapu kapeka ki te kaiwhakamahi.
Ka taea te mohio ko ONT heONUme te tauranga kotahi anake.