He aha te hanganga whatunga o te Whatunga Whakaaetanga Optical (OAN)
Whatunga uru Optical (OAN) e pā ana ki te whakamahi o te muka whatu rite te reo tuku matua ki te ite i te mahi tuku korero o te whatunga uru.Ka hono ki te node ratonga ma te tauranga raina whatu (OLT), ka hono atu ki te kaiwhakamahi ma te wae whatunga whatu (ONU).Kei roto i te whatunga uru muka whatu taputapu mamao-waewae whatunga whatu me te taputapu tari pokapū-whakapae raina whatu, e hono ana e te taputapu tuku.Ko nga waahanga matua o te punaha he OLT me te mamao.ONU.Ka oti ia ratou te hurihanga o nga kawa tohu mai i te atanga node ratonga (SNI) ki te atanga whatunga kaiwhakamahi (UNI) i roto i te whatunga uru katoa.Ko te taputapu uru ano he kaha ki te whatunga ka taea te hanga i nga momo momo topology whatunga.I te wa ano, ko nga taputapu uru he mahi o te tiaki a-rohe me te aro turuki mamao, te hanga i te whatunga whakahaere tiaki na roto i te whakawhiti whatu marama, me te kawe mai ki te pokapū whakahaere whatunga mo te whakahaere whakakotahi ma te kawa whakahaere whatunga e tika ana.
Ko te mahi a te OLT ko te whakarato i tetahi atanga i waenga i te whatunga uru me te whakawhiti o te rohe, me te korero ki te waeine whatunga whatu i te taha o te kaiwhakamahi na roto i te tuku whatu.Ka tino wehea te mahi whakawhiti o te whakawhiti mai i te uru o te kaiwhakamahi.Ko te tauranga raina whatu hei tiaki me te aro turuki i a ia ano me te mutunga o te kaiwhakamahi.Ka taea te whakanoho tika ki te mutunga o te tari whakawhiti me te whakawhitinga o te rohe, ka taea ranei te whakanoho ki te pito mamao.
Ko te mahi a ONU ko te whakarato i tetahi atanga taha-kaiwhakamahi mo te whatunga uru.Ka taea te hono atu ki nga momo momo mutunga o nga kaiwhakamahi, i te wa ano he mahi whakawhiti whakaahua hiko me nga mahi tiaki me te aro turuki.Ko te mahi matua a te ONU ko te whakakore i te muka whatu mai i te OLT, te tukatuka i te tohu tohu me te whakarato i nga hononga ratonga mo nga pakihi iti maha, nga kaiwhakamahi pakihi me nga kaiwhakamahi noho.Ko te mutunga o te whatunga o te ONU he atanga whatu, ko tona mutunga kaiwhakamahi he atanga hiko.Na reira, kei a ONU nga mahi whakahuri mata / hiko me te hiko / mata.Kei a ia ano nga mahi o te hurihanga matihiko/tairite me te tairitenga/mamati o te korero.Ko te ONU te nuinga o te wa e noho tata ana ki te kaiwhakamahi, a he tino ngawari tona waahi.
Kua wehea te Whatunga Optical Access Network (OAN) ki te Whatunga Optical Active (AON, Active Optical Network) me te Passive Optical Whatunga (PON, Passive Optica Optical Network) mo te tohatoha o te punaha.
Ko te hanganga topological o te whatunga uru muka whatu e pa ana ki te whakaritenga ahuahanga o nga raina tuku me nga pona.E whakaatu ana i te tuunga tahi me te whakatakotoranga hononga o ia node i roto i te whatunga.Ko te hanganga topological o te whatunga he awe nui ki te mahi whatunga, te utu me te pono.Ko nga hanganga topological taketake e toru ko: te ahua pahi, te ahua mowhiti me te ahua whetu.Mai i tenei, ka taea te whakaputa mai i te whetu-pahi, whetu-rua, mowhiti-rua, pahi-pahi me etahi atu puka tono whakakotahi.Kei ia tangata ona ake ahuatanga me te taapiri tahi.