I-SONET: inethiwekhi ye-synchronous optical, i-digital transmission standard, yethulwa e-United States ngo-1988. Isignali kagesi yezinga le-1 ichazwa njenge-STS-1, futhi isignali ye-optical yezinga 1 ichazwa njenge-OC-1, ngesilinganiso se-51.84Mb /s. Ngalesi sisekelo, thuthukisa ngokusebenzisa i-multiplexing ukuze uthuthukise isivinini sokudlulisela nokusebenza kahle kokudlulisela.Kamuva, i-ITU-T yasungula izinga lomhlaba elihlanganisiwe le-SDH elisekelwe kuleli zinga, ukuze i-SONET ibhekwe njengengxenye yezinga le-SDH.
I-SONET ichaza izendlalelo ezine ze-optical interface, ukusuka phezulu kuye phansi yile:
1. Isendlalelo se-photon (Isendlalelo Sesithombe) sicubungula ukudluliswa kwebhithi kukhebula yokubona, futhi sinesibopho sokuguqulwa phakathi kwesignali kagesi yokudluliswa okuvumelanayo(STS) kanye nesignali yokubona yenkampani yenethiwekhi(OC). Ukuxhumana kwenziwa ngabaguquli be-electro-optic kulolu ungqimba.
2. Isendlalelo sesigaba (Isendlalelo Sesigaba) sidlulisa ozimele be-STS-N kukhebula yokubona.Sinomsebenzi wokwenza uzimele nokutholwa kwamaphutha.
Izendlalelo ezimbili ezingenhla ziyadingeka, kodwa lezi zingqimba ezimbili ezilandelayo ziyazikhethela.
3. Isendlalelo somugqa (Isendlalelo Somugqa) sinesibopho sokuvumelanisa ungqimba lwendlela nokuphindaphinda, nokuvikela okuzenzakalelayo kokushintshisana.
4. Isendlalelo sendlela (Isendlalelo Sendlela) sibhekana nokudluliswa kwezinsizakalo phakathi kwetheminali yendlela i-PTE (I-Path Terminating Element), Kule PTE kukhonashintshangamakhono e-SONET. Isendlalelo sendlela siphinde sibe nesixhumi esibonakalayo kumanethiwekhi angewona awe-SONET.
Lezi zingqimba ezine empeleni zingabonakala njengokuhlukaniswa iziqephu zesendlalelo esibonakalayo kumodeli yengqimba ye-OSI 7, ngoba zonke izingqimba ezine zitholakala kungqimba lwe-OSI physics.
I-SONET Iphuzu elisetshenziswa kakhulu izinga layo lokudlulisela elicacisiwe:
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
I-OC-256 - mayelana ne-13 Gbit / s
I-OC-384 - cishe i-20 Gbit / s
I-OC-768 - cishe i-40 Gbit / s
I-OC-1536 - cishe i-80 Gbit / s
I-OC-3072 - mayelana ne-160 Gbit / s
Sikhuluma ngamanethiwekhi efayibha ehambisanayo, isingeniso esijwayelekile yilokho okuqukethwe okungenhla.Ezisetshenziswa ezihlobene zenethiwekhi ye-fiber optical ezihilelekile e-Shenzhen HDV Photoelctron Technology Co., Ltd., njenge: ACI-ONU/UkuxhumanaI-ONU/ UhlakaniphileI-ONU/ I-Optical fiberI-ONU/ XPONI-ONU/ GPONI-ONU, nomaOLTuchungechunge, uchungechunge lwe-transceiver nokunye. Ingabe uhlobo lwemishini yenethiwekhi, uma kunesidingo samakhasimende, ungabuyela ekhasini lasekhaya ukuze uxhumane nenkampani yethu, ulinde ubukhona bakho.
