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    SONET

    Ka manawa hoʻouna: ʻAukake-24-2023

    SONET: ʻO ka pūnaewele optical synchronous, kahi standard transmission digital, i hoʻokomoʻia maʻAmelika Hui Pūʻia i ka makahiki 1988. Ua kapaʻia ka hōʻailona uila 1 kiʻekiʻe e like me STS-1, aʻo ka hōʻailona 1 kiʻekiʻe i hōʻikeʻia e like me OC-1, me ka helu o 51.84Mb / s. Ma kēia kumu, hoʻomaikaʻi ma o ka multiplexing e hoʻomaikaʻi i ka wikiwiki o ka hoʻouna ʻana a me ka pono o ka hoʻouna ʻana. Ma hope, ua hoʻokumu ʻo ITU-T i ke kūlana honua SDH i hoʻohui ʻia e pili ana i kēia maʻamau, no laila hiki ke manaʻo ʻia ʻo SONET ma ke ʻano he ʻāpana o ka maʻamau SDH.

    Ua wehewehe ʻo SONET i ʻehā papa kuhikuhi optical, mai luna a lalo:

    1. ʻO ka papa kiʻi kiʻi (Photonic Layer) e hana i ka hoʻoili ʻana i ka bit ma o ke kelepona ʻike, a ʻo ia ke kuleana no ka hoʻololi ʻana ma waena o ka hōʻailona uila o ka hoʻouna synchronous (STS) a me ka hōʻailona optical o ka mea lawe optical (OC). Lawe ʻia ke kamaʻilio e nā mea hoʻololi electro-optic i kēia papa.

    2. Hoʻouna ʻia ka ʻāpana ʻāpana (Section Layer) i nā kiʻi STS-N ma ke kelepona optical.

    Pono nā papa ʻelua i luna, akā ʻo nā papa ʻelua e hiki mai ana he koho.

    3. ʻO ka papa laina (Line Layer) ke kuleana no ka hoʻonohonoho ʻana o ka papa ala a me ka multiplexing, a me ka pale ʻakomi o ka hoʻololi.

    4. ʻO ka papa ala (Path Layer) e pili ana i ka hoʻouna ʻana i nā lawelawe ma waena o nā hāmeʻa terminal ala PTE (Path Terminating Element), Ma kēia PTE hehoʻololime nā mana SONET. Loaʻa i ka ʻaoʻao o ke alahele kahi pilina i nā pūnaewele non-SONET.

    Hiki ke ʻike maoli ʻia kēia mau ʻāpana ʻehā ma ke ʻano he māhele o ka papa kino i ke kumu hoʻohālike OSI 7, no ka mea, aia nā papa ʻehā a pau i ka papa physics OSI.

    ʻO SONET ʻO ka helu i hoʻohana mau ʻia ʻo ia ka helu hoʻouna i kuhikuhi ʻia:

    OC-1 — 51.84Mbit/s

    OC-3 — 155.52 Mbit/s

    OC-12 — 622.08 Mbit/s

    OC-24 — 1.244 Gbit/s

    OC-48 — 2.488 Gbit/s

    OC-96 — 4.976 Gbit/s

    OC-192 — 9.953 Gbit/s

    OC-256 — ma kahi o 13 Gbit / s

    OC-384 — ma kahi o 20 Gbit/s

    OC-768 — ma kahi o 40 Gbit/s

    OC-1536 — ma kahi o 80 Gbit/s

    OC-3072 — ma kahi o 160 Gbit/s

    Ke kamaʻilio nei mākou e pili ana i nā pūnaewele fiber synchronous, ʻo ka hoʻolauna maʻamau ka ʻike ma luna.ONU/Ke kamaʻilioONU/ NaauaoONU/ ʻO ka fiber OpticalONU/ XPONONU/ GPONONU, a i ʻoleOLTmoʻo, moʻo transceiver a pēlā aku. He ʻano o nā lako pūnaewele, inā pono nā mea kūʻai aku, hiki iā ʻoe ke hoʻi i ka ʻaoʻao home e hoʻopili i kā mākou hui, e kali ana i kou hele ʻana.

    asd (2)



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