I-SONET: i-synchronous optical network, umgangatho wokuhanjiswa kwedijithali, yaziswa e-United States ngo-1988. Inqanaba le-1 uphawu lombane lichazwa njenge-STS-1, kwaye inqanaba le-1 ye-optical signal ichazwa njenge-OC-1, kunye nesantya se-51.84Mb. /s.Ngesi siseko, phucula ngokusebenzisa i-multiplexing ukuphucula isantya sothumelo kunye nokusebenza kakuhle.Kamva, i-ITU-T yaseka umgangatho wehlabathi we-SDH odibeneyo wamazwe ngamazwe ngokusekelwe kulo mgangatho, ngoko i-SONET inokuthathwa njengenxalenye yomgangatho we-SDH.
I-SONET ichaza umaleko we-optical interface emine, ukusuka phezulu ukuya ezantsi yile:
1. Umaleko wefotoni (uMaleko weFotoni) uqhubekisa ukuhanjiswa kwebit kwintambo yokukhanya, kwaye unoxanduva lokuguqulwa kombane we-synchronous transmission (STS) kunye ne-optical signal ye-optical carrier (OC).Unxibelelwano lwenziwa ngabaguquli be-electro-optic kule layer.
2. Umaleko weCandelo (uMaleko weCandelo) uhambisa izakhelo ze-STS-N kwintambo yokubona.Inomsebenzi wokuqulunqa kunye nokufunyanwa kwempazamo.
Ezi maleko zimbini zingentla ziyimfuneko, kodwa ezi maleko zimbini zilandelayo azikhethi.
3. Uluhlu lomgca (Uluhlu lomgca) luxanduva lokulungelelanisa umgca wendlela kunye ne-multiplexing, kunye nokukhuselwa ngokuzenzekelayo kotshintshiselwano.
4. Umaleko wendlela (uMaleko weNdlela) ujongana nokuhanjiswa kweenkonzo phakathi kwezixhobo ze-terminal ye-PTE (i-Path Terminating Element), Kule PTE lutshintsho olunamandla e-SONET.Umaleko wendlela unalo ujongano kwiinethiwekhi ezingezizo eze-SONET.
Ezi maleko ezine ngokwenene zinokubonwa njengokwahlulahlula umaleko womzimba kwimodeli ye-OSI 7 yomaleko, kuba zonke iileya ezine zifumaneka kuluhlu lwefiziksi ye-OSI.
SONET Indawo esetyenziswa ngokuqhelekileyo lizinga layo lothumelo elichaziweyo:
OC-1 — 51.84Mbit/s
OC-3 - 155.52 Mbit / s
OC-12 — 622.08 Mbit / s
OC-24 — 1.244 Gbit / s
I-OC-48 - 2.488 Gbit / s
OC-96 - 4.976 Gbit / s
OC-192 — 9.953 Gbit / s
I-OC-256 - malunga ne-13 Gbit / s
I-OC-384 - malunga ne-20 Gbit / s
I-OC-768 - malunga ne-40 Gbit / s
I-OC-1536 - malunga ne-80 Gbit / s
I-OC-3072 - malunga ne-160 Gbit / s
Sithetha malunga nothungelwano lwefayibha ze-synchronous, intshayelelo ngokubanzi ngumxholo ongasentla. Kwisixhobo sothungelwano se-optical optical network esibandakanyekayo kwi-Shenzhen HDV Photoelctron Technology Co., Ltd., njenge: ACI-ONU/UnxibelelwanoI-ONU/ BukrelekreleI-ONU/ Ifayibha yamehloI-ONU/ XPONI-ONU/ GPONI-ONU, okanye uchungechunge lwe-OLT, uchungechunge lwe-transceiver njalo njalo.Ngaba luhlobo lwezixhobo zenethiwekhi, ukuba kukho imfuneko yabathengi, unokubuyela kwiphepha lasekhaya ukuze uqhagamshelane nenkampani yethu, ulinde ubukho bakho.
