Nzira yekusiyanisa sei network yekuwana optical OLT, ONU, ODN, ONT?

Network yekupinda nemaziso inetwork inoshandisa chiedza senzira yekutumira, panzvimbo pewaya dzemhangura, uye inoshandiswa kusvika kumhuri yega yega. Network yekupinda nemaziso. Network yekupinda nemaziso inowanzo kuve nezvikamu zvitatu: terminal yemutsara we optical OLT, unit ye ​​network ye optical ONU, network yekuparadzira nemaziso ODN, pakati payo OLT neONU ndizvo zvikamu zvikuru zve network yekupinda nemaziso.

Chii chinonzi OLT?

Zita rakazara reOLT ndiOptical Line Terminal, optical line terminal. OLT ioptical line terminal uye midziyo yehofisi yepakati yekutaurirana. Inoshandiswa kubatanidza optical fiber trunk lines. Inoshanda seswitch kana router mune network yekutaurirana yechinyakare. Icho chishandiso chiri pamusuwo wenetwork yekunze uye pamusuwo wenetwork yemukati. Yakaiswa pahofisi yepakati, mabasa akakosha ekutonga ndeyekuronga traffic, buffer control, uye kupa user-oriented passive optical network interfaces uye bandwidth allocation. Kuti zvive nyore, ndeyekuita mabasa maviri. Kune upstream, inopedzisa upstream access yePON network; kune downstream, data rakawanikwa rinotumirwa uye rinogoverwa kune ese maONU user terminal devices kuburikidza neODN network.

Chii chinonzi ONU?

ONU iOptical Network Unit. Iyo ONU ine mabasa maviri: inogamuchira nhepfenyuro inotumirwa neOLT, uye inopindura kuOLT kana data richida kugamuchirwa; inounganidza uye inochengetedza data reEthernet iro mushandisi anoda kutumira, uye inoritumira kuOLT zvichienderana nehwindo rekutumira rakapihwa. Tumira data rakachengetwa.

Mune network yeFTTx, nzira dzakasiyana dzekushandisa ONU dzakasiyanawo, dzakadai seFTTC (Fiber To The Curb): ONU inoiswa mukamuri repakati remakombiyuta munharaunda; FTTB (Fiber To The Building): ONU inoiswa mukoridho FTTH (Fiber To The Home): ONU inoiswa mumushandisi wepamba.

Chii chinonzi ONT?

ONT ndiyo Optical Network Terminal, iyo inonyanya kushandiswa paFTTH, inozivikanwa se "optical modem", iyo yakafanana nemodem yemagetsi ye xDSL. ONT ioptical network terminal, iyo inoshandiswa kumushandisi wekupedzisira, nepo ONU ichireva optical network unit, uye panogona kunge paine mamwe ma network pakati payo nemushandisi wekupedzisira. ONT chikamu chakakosha cheONU.

Ukama huripo pakati peONU neOLT ndehupi?

OLT ndiyo nzvimbo yekutonga, uye ONU ndiyo nzvimbo yekutonga; kushanda kweONU kunoburitswa kuburikidza neOLT, uye maviri ari muhukama hwetenzi nemuranda. MaONU akawanda anogona kubatanidzwa kune imwe OLT kuburikidza nesplitter.

Chii chinonzi ODN?

ODN ndiyo Optical Distribution Network, network yekugovera optical, ndiyo nzira yekufambisa optical pakati peOLT neONU, basa guru nderekupedzisa kutumira zviratidzo zve optical nenzira mbiri, kazhinji netambo dze optical fiber, optical connectors, optical splitters uye kuiswa kwekubatanidza izvi. Chikamu chemidziyo inotsigira mudziyo, chikamu chakakosha ndiyo optical splitter.