He aha ka Gpon?

ʻO ka ʻenehana GPON (Gigabit-Capable PON) ka hanauna hou loa o ka broadband passive optical integrated access technology ma muli o ke kūlana ITU-TG.984.x. He nui kona mau pono e like me ka bandwidth kiʻekiʻe, ka hana kiʻekiʻe, ka uhi nui, a me nā mea hoʻohana waiwai. Manaʻo ka hapa nui o nā mea hoʻohana he ʻenehana kūpono e ʻike ai i ka broadband a me ka hoʻololi piha ʻana o nā lawelawe pūnaewele ʻike. Ua hoʻomaka mua ʻia ʻo GPON e ka hui Full-Service Access Network (FSAN) i Kepakemapa 2002. Ma kēia kumu, ua hoʻopau ʻo ITU-T i ka hoʻokumu ʻana o ITU-TG.984.1 a me G.984.2 i Malaki 2003. , ʻO ka standardization o G.984.3 ua hoʻopau ʻia i Pepeluali a me Iune 2004, no laila ua hoʻokumu ʻia ka ʻohana maʻamau o GPON.

He aha ʻo ʻEpon?

ʻO EPON (Ethernet Passive Optical Network), e like me ka inoa e hōʻike nei, he ʻenehana PON pili Ethernet. Hoʻohana ia i ka hoʻolālā point-to-multipoint, passive optical fiber transmission, a hāʻawi i nā lawelawe like ʻole ma ka Ethernet. Hoʻonohonoho ʻia ka ʻenehana EPON e ka hui hana IEEE802.3 EFM. I Iune 2004, ua hoʻokuʻu ka hui hana IEEE802.3EFM i ka maʻamau EPON - IEEE802.3ah (i hoʻokomo ʻia i ka maʻamau IEEE802.3-2005 ma 2005). Ma kēia maʻamau, hoʻohuiʻia nāʻenehana Ethernet a me PON, hoʻohanaʻia kaʻenehana PON i ka papa kino, hoʻohanaʻia ka protocol Ethernet i loko o ka pūnaewele loulou data, aʻikeʻia kaʻike Ethernet ma o ka hoʻohanaʻana i ka topology PON. No laila, hoʻohui ia i nā mea maikaʻi o ka ʻenehana PON a me ka ʻenehana Ethernet: ke kumu kūʻai haʻahaʻa, ka bandwidth kiʻekiʻe, ka scalability ikaika, ka launa pū me ka Ethernet i loaʻa, a me ka hoʻokele maʻalahi.