SONET: synchronous optical network, tekanyo ea phetisetso ea digital, e ile ea hlahisoa United States ka 1988. Letšoao la motlakase la boemo ba 1 le hlalosoa e le STS-1, 'me tekanyo ea 1 ea optical e bitsoa OC-1, ka tekanyo ea 51.84Mb. /s. Motheong ona, ntlafatsa ka ho multiplexing ho ntlafatsa lebelo la phetisetso le katleho ea phetisetso.Hamorao, ITU-T e thehile maemo a machaba a SDH a kopaneng a lefats'e ho latela maemo ana, kahoo SONET e ka nkuoa e le karolo ea maemo a SDH.
SONET e hlalosa mekhahlelo e mene ea optical interface, ho tloha holimo ho ea tlase ke:
1. Lera la photon (Photonic Layer) le sebetsana le phetisetso e nyenyane ho pholletsa le thapo ea optical, 'me e ikarabella bakeng sa phetoho pakeng tsa pontšo ea motlakase ea synchronous transmission(STS) le optical signal ea optical carrier(OC). Puisano e etsoa ke li-converter tsa electro-optic sebakeng sena.
2. Lera la Karolo (Lera la Karolo) le fetisetsa liforeimi tsa STS-N ho thapo ea optical. E na le mosebetsi oa ho etsa foreimi le ho lemoha liphoso.
Likarolo tse peli tse ka holimo lia hlokahala, empa tse peli tse latelang ke tsa boikhethelo.
3. Lera la line (Line Layer) le ikarabella bakeng sa ho lumellana le lera la litsela le ho kopanya ka bongata, le tšireletso e ikemetseng ea phapanyetsano.
4. Lera la tsela (Path Layer) le sebetsana le phetiso ea lits'ebeletso lipakeng tsa lisebelisoa tsa terminal PTE (Path Terminating Element), PTE ena keswitjhaka bokhoni ba SONET. Lera la tsela le lona le na le sebopeho sa marang-rang a seng a SONET.
Likarolo tsena tse 'nè li ka bonoa e le karohano ea lera la' mele ho OSI 7 layer model, hobane likarolo tsohle tse 'nè li fumaneha ho OSI physics lera.
SONET Sebaka se sebelisoang hangata ke sekhahla sa phetisetso e boletsoeng:
OC-1 — 51.84Mbit/s
OC-3 - 155.52 Mbit / s
OC-12 - 622.08 Mbit / s
OC-24 - 1.244 Gbit / s
OC-48 - 2.488 Gbit / s
OC-96 - 4.976 Gbit / s
OC-192 - 9.953 Gbit / s
OC-256 - hoo e ka bang 13 Gbit / s
OC-384 - hoo e ka bang 20 Gbit / s
OC-768 - hoo e ka bang 40 Gbit / s
OC-1536 - hoo e ka bang 80 Gbit / s
OC-3072 - hoo e ka bang 160 Gbit / s
Re bua ka li-network tsa faeba tsa synchronous, kenyelletso e akaretsang ke litaba tse kaholimo. Bakeng sa lisebelisoa tse amanang le marang-rang a optical fiber tse amehang Shenzhen HDV Photoelctron Technology Co., Ltd., joalo ka: ACONU/PuisanoONU/ Ea bohlaleONU/ Faeba ea mahloONU/ XPONONU/ GPONONU, kapaOLTletoto, letoto la li-transceiver joalo-joalo. Na ke mofuta oa lisebelisoa tsa marang-rang, haeba ho na le tlhokahalo ea bareki, u ka khutlela leqepheng la lehae ho ikopanya le k'hamphani ea rona, u emetse boteng ba hau.
