Yini i-Gpon?

Ubuchwepheshe be-GPON (Gigabit-Capable PON) yisizukulwane sakamuva sobuchwepheshe bokufinyelela obuhlanganisiwe be-broadband passive optical obusekelwe kuzinga le-ITU-TG.984.x. Inezinzuzo eziningi ezifana nomkhawulokudonsa ophezulu, ukusebenza kahle okuphezulu, ukumbozwa okukhulu, nokuxhumana okucebile komsebenzisi. Iningi lama-opharetha likuthatha njengobuchwepheshe obufanele ukubona i-broadband kanye noshintsho oluphelele lwezinsiza zenethiwekhi. I-GPON yaqale yahlongozwa yinhlangano ye-Full-Service Access Network (FSAN) ngo-September 2002. Ngalesi sisekelo, i-ITU-T yaqeda ukwakhiwa kwe-ITU-TG.984.1 kanye ne-G.984.2 ngo-March 2003. , Ukumiswa kwe-G.984.3 yaqedwa ngoFebhuwari nangoJuni 2004, ngaleyo ndlela yakha umndeni ojwayelekile we-GPON.

Iyini i-Epon?

I-EPON (i-Ethernet Passive Optical Network), njengoba igama liphakamisa, ubuchwepheshe be-PON obusekelwe ku-Ethernet. Yamukela isakhiwo se-point-to-multipoint, i-passive optical fiber transmission, futhi inikeza izinsizakalo ezihlukahlukene ku-Ethernet. Ubuchwepheshe be-EPON bulinganiswa yiqembu elisebenzayo le-IEEE802.3 EFM. NgoJuni 2004, iqembu elisebenzayo le-IEEE802.3EFM lakhulula indinganiso ye-EPON - IEEE802.3ah (yahlanganiswa nezinga le-IEEE802.3-2005 ngo-2005). Kuleli zinga, ubuchwepheshe be-Ethernet kanye ne-PON buhlanganisiwe, ubuchwepheshe be-PON busetshenziswa ungqimba olubonakalayo, iphrothokholi ye-Ethernet isetshenziswa ungqimba lwesixhumanisi sedatha, futhi ukufinyelela kwe-Ethernet kutholwa ngokusebenzisa i-PON topology. Ngakho-ke, ihlanganisa izinzuzo zobuchwepheshe be-PON nobuchwepheshe be-Ethernet: izindleko eziphansi, umkhawulokudonsa ophezulu, ukuqina okuqinile, ukuhambisana ne-Ethernet ekhona, nokuphathwa okulula.