I-PON (Passive Optical Network) iyinethiwekhi ye-passive Optical network, okusho ukuthi i-ODN (inethiwekhi yokusabalalisa optical) phakathi kwe-OLT (optical line terminal) kanye ne-ONU (optical network unit) ayinayo into esebenzayo, futhi isebenzisa kuphela imicu yokubona. kanye nezingxenye ze-passive.I-PON ithatha ngokuyinhloko ukwakheka kwenethiwekhi ye-point-to-multipoint, okuwubuchwepheshe obuyinhloko bokubona i-FTTB/FTTH.
Ubuchwepheshe be-PON buqukethe okuningi, futhi bubuyekezwa ngokuphindaphindiwe.Ukuthuthukiswa kobuchwepheshe be-xPON kusuka ku-APON, BPON, kanye ne-GPON yakamuva ne-EPON.Lobu ubuchwepheshe bezindlela ezihlukene zokudlulisela kanye namazinga okudlulisela athuthukiswe ngezikhathi ezahlukene.
Yini i-EPON?
I-EPON (i-Ethernet Passive Optical Network) iyinethiwekhi ye-Ethernet passive optical network.I-EPON isuselwe kubuchwepheshe be-PON be-Ethernet, obuhlanganisa izinzuzo zobuchwepheshe be-PON nobuchwepheshe be-Ethernet.Yamukela ukwakheka kwe-point-to-multipoint kanye nokudluliswa kwe-fiber optical ye-passive ukuhlinzeka ngezinsizakalo eziningi phezu kwe-Ethernet.Ngenxa yokuthunyelwa komnotho nokusebenza kahle kwe-EPON, iyindlela yokuxhumana esebenza kahle kakhulu yokuthola "amanethiwekhi amathathu kwelinye" kanye "nemayela lokugcina".
Iyini i-GPON?
I-GPON (Gigabit-Capable Passive Optical Network) iyinethiwekhi ye-Gigabit passive optical noma inethiwekhi ye-Gigabit passive optical network.Amazinga atholwe yi-EPON kanye ne-GPON ahlukile.Kungashiwo ukuthi i-GPON ithuthuke kakhulu futhi ingadlulisela umkhawulokudonsa omningi, futhi ingaletha abasebenzisi abaningi kune-EPON.Nakuba i-GPON inezinzuzo ngaphezu kwe-EPON ngamanani aphezulu kanye nezinsizakalo eziningi, ubuchwepheshe be-GPON bunzima kakhulu futhi izindleko zabo ziphakeme kune-EPON.Ngakho-ke, okwamanje, i-EPON ne-GPON ubuchwepheshe obunezinhlelo zokusebenza eziningi zokufinyelela kwe-Broadband ye-PON.Yibuphi ubuchwepheshe obungakhethwa buncike kakhulu ezindlekweni zokufinyelela i-fiber optical kanye nezidingo zebhizinisi.I-GPON izofaneleka kakhulu kumakhasimende ane-bandwidth ephezulu, izinsizakalo eziningi, i-QoS nezidingo zokuphepha kanye nobuchwepheshe be-ATM njengomgogodla.Ukuthuthukiswa kwesikhathi esizayo kuwumkhawulokudonsa ophezulu.Isibonelo, ubuchwepheshe be-EPON/GPON buthuthukise i-10 G EPON/10 G GPON, futhi umkhawulokudonsa uzothuthukiswa nakakhulu.
Njengoba isidingo samandla abahlinzeki benethiwekhi siqhubeka nokwanda, ukuguquguquka kwamanethiwekhi okufinyelela kumele kunwetshwe ukuze kuhlangatshezwane nalesi sidingo esikhulayo.I-Fiber-to-the-home (FTTH) i-passive optical network (PON) ukufinyelela kwenethiwekhi ye-optical okwamanje iwubuchwepheshe obusetshenziswa kakhulu futhi obusetshenziswa kakhulu.Izinzuzo zobuchwepheshe be-PON ukuthi zinganciphisa ukusebenza kwezinsiza ze-backbone optical fiber futhi zilondoloze ukutshalwa kwezimali;isakhiwo senethiwekhi siyavumelana nezimo futhi ikhono lokunweba linamandla;izinga lokuhluleka kwemishini ye-passive optical liphansi, futhi akulula ukuphazanyiswa imvelo yangaphandle;futhi nekhono lokusekela ibhizinisi linamandla.