SONET: synchronous optical network, tus qauv kis tau tus mob digital, tau tshaj tawm hauv Tebchaws Meskas hauv xyoo 1988. Cov theem 1 hluav taws xob teeb liab yog suav tias yog STS-1, thiab qib 1 kho qhov muag teeb liab qhia tau tias yog OC-1, nrog tus nqi ntawm 51.84Mb /s. Raws li lub hauv paus no, hloov kho los ntawm multiplexing los txhim kho kev sib kis ceev thiab kev sib kis tau zoo.Tom qab ntawd, ITU-T tau tsim lub ntiaj teb kev sib koom ua ke SDH tus qauv raws li tus qauv no, yog li SONET tuaj yeem suav tias yog ib feem ntawm SDH tus qauv.
SONET txhais plaub txheej txheej optical interface, los ntawm sab saum toj mus rau hauv qab yog:
1. Cov txheej txheem photon (Photonic Layer) ua cov txheej txheem me me hla cov kab hluav taws xob kho qhov muag, thiab yog lub luag haujlwm rau kev hloov pauv ntawm cov teeb liab hluav taws xob ntawm synchronous kis tau tus mob (STS) thiab cov teeb liab ntawm optical carrier (OC). Kev sib txuas lus yog nqa tawm los ntawm electro-optic converters nyob rau hauv no txheej.
2. Seem txheej (Section Layer) xa cov STS-N thav duab ntawm qhov kho qhov muag cable.Nws muaj kev ua haujlwm ntawm framing thiab kev ua yuam kev
Qhov saum toj no ob txheej yog tsim nyog, tab sis ob txheej hauv qab no yog xaiv tau.
3. Cov kab txheej (Line Layer) yog lub luag haujlwm rau txoj kev txheej txheej synchronization thiab multiplexing, thiab tsis siv neeg tiv thaiv kev sib pauv.
4. Txoj kev txheej (Path Layer) cuam tshuam nrog kev sib kis ntawm cov kev pabcuam nruab nrab ntawm txoj kev davhlau ya nyob twg PTE (Path Terminating Element), Ntawm no PTE yog ib qhohloovnrog SONET muaj peev xwm. Cov txheej txheem tseem muaj qhov cuam tshuam rau cov tsis-SONET networks.
Cov plaub txheej no tuaj yeem pom tau tias yog kev faib tawm ntawm lub cev txheej hauv OSI 7 txheej qauv, vim tias tag nrho plaub txheej yog nyob rau hauv OSI physics txheej.
SONET Lub ntsiab lus siv feem ntau yog nws qhov kev sib kis tau teev tseg:
OC-1 — 51.84 Mbit/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 - txog 13 Gbit / s
OC-384 - txog 20 Gbit / s
OC-768 - txog 40 Gbit / s
OC-1536 - txog 80 Gbit / s
OC-3072 - txog 160 Gbit / s
Peb tab tom tham txog synchronous fiber ntau tes hauj lwm, cov lus qhia dav dav yog cov ntsiab lus saum toj no.Rau cov khoom siv kho qhov muag fiber ntau koom nrog hauv Shenzhen HDV Photoelctron Technology Co., Ltd., xws li: ACONU/ Kev sib txuas lusONU/ Txawj NtseONU/ Optical fiber ntauONU/ XPONONU/ GPONONU, los yogOLTseries, transceiver series thiab lwm yam. Yog ib yam khoom siv network, yog tias muaj kev xav tau rau cov neeg siv khoom, koj tuaj yeem rov qab mus rau qhov home page hu rau peb lub tuam txhab, tos koj tuaj.
