I-ONU (Iyunithi yeNethiwekhi yokubona) iyunithi yenethiwekhi ye-Optical, i-ONU yahlulwe yaba yiyunithi yenethiwekhi esebenzayo kunye neyunithi yothungelwano olubonakalayo.Ngokubanzi, izixhobo ezixhotyiswe ngabamkeli be-optical, i-uplink optical transmitters, kunye ne-amplifiers ezininzi zeebhulorho zokubeka iliso kwinethiwekhi ibizwa ngokuba yi-optical node.I-PON isebenzisa i-fiber ebonakalayo enye ukuqhagamshela kwi-OLT, kwaye i-OLT idityaniswe kwi-ONU.I-ONU inikezela ngeenkonzo ezifana nedatha, i-IPTV (i-Interactive Internet TV), ilizwi (usebenzisa i-IAD, iDivayisi yokuFikelela eDityanisiweyo), kwaye iqonda ngokwenene "i-triple-play" izicelo.
Ngokubanzi, izixhobo ze-ONU zinokuhlelwa ngokweemeko ezahlukeneyo zesicelo ezifana ne-SFU, HGU, SBU, MDU, kunye ne-MTU.
1. Uhlobo lwe-SFU lwe-ONU ukusasazwa
Inzuzo yale ndlela yokuthunyelwa kukuba izibonelelo zenethiwekhi zininzi, kwaye zifanelekile kwimizi ezimeleyo kwimeko ye-FTTH.Inokuqinisekisa ukuba isiphelo somsebenzisi sinemisebenzi yokufikelela kwi-broadband, kodwa ayibandakanyi imisebenzi enzima yesango lasekhaya.I-SFU kule ndawo ineendlela ezimbini eziqhelekileyo: ukubonelela zombini izibuko ze-Ethernet kunye ne-POTS port;kunye nokubonelela kuphela amazibuko e-Ethernet.Kufuneka kuqatshelwe ukuba i-SFU kuzo zombini iifom inokubonelela ngemisebenzi ye-coaxial cable ukuququzelela ukufezekiswa kweenkonzo ze-CATV, kwaye ingasetyenziselwa kunye namasango asekhaya ukuququzelela ukunikezelwa kweenkonzo zexabiso elongezelelweyo.Le meko ikwasebenza kumashishini angafunekiyo ukutshintshiselana ngedatha ye-TDM
2. HGU chwetheza i-ONU yokusasazwa
Isicwangciso sokuthunyelwa kohlobo lwe-HGU ye-terminal ye-ONU iyafana nohlobo lwe-SFU, ngaphandle kokuba imisebenzi ye-ONU kunye ne-RG idibaniswe kwi-hardware.Xa kuthelekiswa ne-SFU, inokuqonda ulawulo oluntsonkothileyo kunye nemisebenzi yolawulo.Kule meko yokuthunyelwa, i-interface ene-U yakhiwe kwisixhobo somzimba kwaye ayiboneleli nge-interface.Ukuba izixhobo ze-xDSLRG ziyafuneka, iindidi ezininzi zojongano zinokuqhagamshelwa ngokuthe ngqo kuthungelwano lwasekhaya, elilingana nesango lekhaya eline-EPON uplink interface.Isetyenziswa kumathuba e-FTTH.
3. SBU chwetheza ukuthunyelwa kwe-ONU
Esi sisombululo sokuthunyelwa sifanelekile ngakumbi kulwakhiwo lwenethiwekhi yabasebenzisi beshishini elizimeleyo kwimodi yesicelo seFTTO, kwaye lutshintsho lweshishini olusekelwe kwi-SFU kunye ne-HGU yokuthunyelwa kweemeko.Inethiwekhi phantsi kwesi sikhundla sokuthunyelwa kunokuxhasa umsebenzi we-terminal yokufikelela kwi-broadband kunye nokubonelela abasebenzisi ngeendlela ezahlukeneyo zokudibanisa idatha kuquka i-El interface, i-Ethernet interface, kunye ne-POTS interface, enokuthi ihlangabezane neemfuno zamashishini kunxibelelwano lwedatha, unxibelelwano lwezwi, kunye ne-TDM yangasese. iinkonzo zomgca.Iimfuno zokusetyenziswa.I-interface e-U-shaped kwimo engqongileyo inokubonelela amashishini ngesakhiwo sesakhelo esineempawu ezahlukeneyo, kwaye umsebenzi unamandla.
4. Uhlobo lwe-MDU yokuhanjiswa kwe-ONU
Esi sisombululo sokuthunyelwa sifanelekile kulwakhiwo lwenethiwekhi phantsi kweendlela ezininzi zezicelo ezifana ne-FTTC yabasebenzisi abaninzi, i-FTTN, i-FTCab, kunye ne-FTTZ.Ukuba abasebenzisi benqanaba loshishino abafuni iinkonzo ze-TDM, esi sisombululo sinokusetyenziselwa ukuthunyelwa kwenethiwekhi ye-EPON.Esi sikimu sokuthunyelwa sinokubonelela ngabasebenzisi abaninzi ngeenkonzo zonxibelelwano lwedatha ye-broadband kuquka neenkonzo ze-Ethernet / IP, iinkonzo zeVoIP, kunye neenkonzo ze-CATV kunye nezinye iindlela zeenkonzo ezininzi, kwaye zinamandla okudlulisa idatha.Ngalinye izibuko zalo zonxibelelwano zinokuhambelana nomsebenzisi womnatha, ngoko xa kuthelekiswa, izinga lokusetyenziswa kwenethiwekhi liphezulu.
5. I-MTU chwetheza i-ONU yokuthunyelwa
Esi sisombululo sokuthunyelwa lutshintsho lwezorhwebo olusekelwe kwisisombululo sokuthunyelwa kwe-MDU.Inokubonelela ngabasebenzisi bamashishini amaninzi ngeenkonzo ezahlukeneyo ze-interface ezibandakanya i-Ethernet interfaces kunye ne-POTS interfaces, kwaye inokudibana neenkonzo ezahlukeneyo ezifana nezwi, idatha, kunye neenkonzo ze-TDM eziqeshiweyo zamashishini.isidingo.Ukuba i-slot-type yokuphunyezwa isakhiwo isetyenziswe ngokudibeneyo, imisebenzi yoshishino etyebileyo kwaye enamandla ngakumbi inokufezekiswa.
Ixesha lokuposa: Jul-20-2023