I-ONU (Optical Network Unit) Iyunithi yenethiwekhi ye-Optical, i-ONU ihlukaniswe yaba iyunithi yenethiwekhi yokubona esebenzayo kanye neyunithi yenethiwekhi ye-passive optical network.Ngokuvamile, okokusebenza okufakwe izamukeli zamehlo, ama-uplink optical transmitters, nama-amplifiers amaningi amabhuloho okuqapha inethiwekhi kubizwa ngokuthi i-optical node.I-PON isebenzisa i-optical fiber eyodwa ukuze ixhume ku-OLT, bese i-OLT ixhunywe ku-ONU.I-ONU ihlinzeka ngezinsizakalo ezifana nedatha, i-IPTV (I-Interactive Internet TV), izwi (lisebenzisa i-IAD, Idivayisi Yokufinyelela Ehlanganisiwe), futhi ibona ngempela izinhlelo zokusebenza "zokudlala kathathu".
Sekukonke, amadivayisi we-ONU angahlukaniswa ngokuya ngezimo ezahlukahlukene zohlelo njenge-SFU, HGU, SBU, MDU, ne-MTU.
1. Uhlobo lwe-SFU ukuthunyelwa kwe-ONU
Inzuzo yale ndlela yokuthunyelwa ukuthi izinsiza zenethiwekhi ziningi ngokuqhathaniswa, futhi ifanele imindeni ezimele esimweni se-FTTH.Ingaqinisekisa ukuthi isiphetho somsebenzisi sinemisebenzi yokufinyelela ku-broadband, kodwa ayibandakanyi imisebenzi eyinkimbinkimbi yesango lasekhaya.I-SFU kule ndawo inezinhlobo ezimbili ezivamile: ukuhlinzeka kokubili izimbobo ze-Ethernet namachweba we-POTS;futhi ihlinzeka ngezimbobo ze-Ethernet kuphela.Kufanele kuqashelwe ukuthi i-SFU kuzo zombili izinhlobo ingahlinzeka ngemisebenzi yekhebula le-coaxial ukuze kube lula ukufezeka kwezinsizakalo ze-CATV, futhi ingasetshenziswa namasango asekhaya ukuze kube lula ukuhlinzekwa kwezinsizakalo ze-value-added.Lesi simo siyasebenza nakumabhizinisi angadingi ukushintshanisa idatha ye-TDM
2. HGU uhlobo lwe-ONU ukuthunyelwa
Isu lokuphakela letheminali yohlobo lwe-HGU ye-ONU iyafana nalolo lohlobo lwe-SFU, ngaphandle kokuthi imisebenzi ye-ONU kanye ne-RG ihlanganiswe kuhadiwe.Uma iqhathaniswa ne-SFU, ingabona imisebenzi yokulawula eyinkimbinkimbi kakhulu.Kulesi simo sokusebenzisa, isixhumi esibonakalayo esimise u-U sakhelwe kudivayisi ephathekayo futhi asihlinzeki ngohlelo.Uma impahla ye-xDSLRG idingeka, izinhlobo eziningi zezixhumanisi zingaxhunywa ngokuqondile kunethiwekhi yasekhaya, okulingana nesango lasekhaya eline-EPON uplink interface.Kusetshenziswe ezenzakalweni ze-FTTH.
3. SBU thayipha ukuthunyelwa kwe-ONU
Lesi sixazululo sokuphakelwa sifaneleka kakhulu ekwakhiweni kwenethiwekhi yabasebenzisi bebhizinisi abazimele kumodi yesicelo se-FTTO, futhi siwushintsho lwebhizinisi olusekelwe kuzimo zokuthunyelwa kwe-SFU ne-HGU.Inethiwekhi ngaphansi kwale ndawo yokuthunyelwa ingasekela umsebenzi wetheminali yokufinyelela ku-broadband futhi inikeze abasebenzisi inhlobonhlobo yokuxhumana yedatha okuhlanganisa isixhumi esibonakalayo se-El, isixhumi esibonakalayo se-Ethernet, nesixhumi esibonakalayo se-POTS, esingahlangabezana nezidingo zamabhizinisi ekuxhumaneni kwedatha, ukuxhumana ngezwi, kanye nemfihlo ye-TDM. amasevisi omugqa.Izidingo zokusetshenziswa.Isixhumi esibonakalayo esimise u-U endaweni singanikeza amabhizinisi ngesakhiwo sohlaka esinezici ezihlukahlukene, futhi umsebenzi unamandla uma kuqhathaniswa.
4. Uhlobo lwe-MDU ukuthunyelwa kwe-ONU
Lesi sixazululo sokuphakelwa sifanele ukwakhiwa kwenethiwekhi ngaphansi kwezindlela zokufaka izicelo eziningi ezifana ne-FTTC yabasebenzisi abaningi, i-FTTN, i-FTTCab, ne-FTTZ.Uma abasebenzisi bezinga lebhizinisi bengadingi amasevisi e-TDM, lesi sixazululo singasetshenziselwa ukuthunyelwa kwenethiwekhi ye-EPON.Lolu hlelo lokusebenza lunganikeza abasebenzisi abaningi ngezinsizakalo zokuxhumana zedatha ye-broadband kuhlanganise nezinsizakalo ze-Ethernet/IP, izinsizakalo ze-VoIP, nezinsizakalo ze-CATV nezinye izindlela zezinsizakalo eziningi, futhi lunamandla aqinile okudlulisa idatha.Imbobo ngayinye yayo yokuxhumana ingahambisana nomsebenzisi wenethiwekhi, ngakho-ke uma kuqhathaniswa, izinga layo lokusebenzisa inethiwekhi liphezulu.
5. Uhlobo lwe-MTU ukuthunyelwa kwe-ONU
Lesi sixazululo sokusatshalaliswa siwushintsho lwezentengiselwano olusekelwe kusixazululo sokuthunyelwa kwe-MDU.Ingahlinzeka abasebenzisi bamabhizinisi amaningi ngezinsizakalo ezihlukahlukene zokusebenzelana okuhlanganisa izixhumi ezibonakalayo ze-Ethernet nezixhumi ezibonakalayo ze-POTS, futhi ingahlangabezana nezinsizakalo ezihlukahlukene ezifana nezwi, idatha, nezinsizakalo zolayini eziqashisiwe ze-TDM zamabhizinisi.isidingo.Uma isakhiwo sokuqaliswa kohlobo lwe-slot sisetshenziswa ngokuhlangene, imisebenzi yebhizinisi ecebile futhi enamandla kakhulu ingafezeka.
Isikhathi sokuthumela: Jul-20-2023