Mhoro, Vaverengi. Muchikamu chino ndichakurukura nezve OSI-Data Link Layer Error Control netsananguro. Ngatitange…
Kuti tinzwisise kufambiswa kweiyo data link layer ngatitorei muenzaniso, kana iyo A kifaa ichida kutaurirana neB mudziyo, chinongedzo chekutaurirana uye nhevedzano yemidziyo inodiwa. Kana mutsara wose wekutaurirana usina kukanganisa kugadzirisa nzira, ipapo chete data inotumirwa neA inotumirwa neB. Kana pane kukanganisa kwekugadzirisa nzira pamutsara wekutaurirana, data yakatumirwa kubva kuA kusvika kuB ichaonekwa se kukanganisa pamudziyo uri padyo neA, uye A inoda kutumirwa zvakare, uye iyo chaiyo data furemu inogona kutumirwa kutanga. Kana ikatumirwa kudivi reB, ipapo mutsara wese unogona kuchengetedza zviwanikwa, iyo ndiyo nzira yekukanganisa yekudzora data data.
Iko kukanganisa kutonga kweiyo data link layer inonyanya kunangana nezvikanganiso zvishoma pane chinongedzo. Pane kunyanya nzira mbiri dzekudzora, dzakakamurwa kuita chikanganiso chekuongorora coding uye kukanganisa kugadzirisa coding. Kukanganisa kuona kukodha kunosanganisira parity uye cyclic redundancy CRC, ukuwo kukanganisa kugadzirisa kodhi kunosanganisira Hamming kodhi.
Iko kukodha uye modulation yeiyo link layer uye yemuviri layer zvakasiyana. Iyo yemuviri layer ndeye diki chete kugadzirisa dambudziko re bit kuwiriranisa munzira yekutapurirana, senge Manchester coding. Iko kukodha kweiyo data link layer yakanangana neseti ye data diki, uye inoona kukanganisa chizvarwa kutonga kweseti yebhinari bit data mune yekufambisa nzira kuburikidza nehunyanzvi hwekudzokorora kodhi.
Izvo zviri pamusoro ndiyo tsanangudzo yezivo ye "OSI-Data Link Layer-Error Control" yakaunzwa naShenzhen Shenzhen HDV photoelectric Technology Co., Ltd. Zvigadzirwa zvekukurukurirana zvinobudiswa nekambani inovhara;Zvikamu zvemodule:optical fiber modules, Ethernet modules, Optical fiber transceiver modules, Optical fiber access modules, SSFP Optical modules,uyeSFP optical fibers, nezvimwewo.
ONUchikamu: EPON ONU, AC ONU, Optical fiber ONU, CATV ONU, GPON ONU, XPON ONU, nezvimwewo.
OLTclass: kuchinja OLT, GPON OLT, EPON OLT, kutauriranaOLT, nezvimwewo.
Izvo zviri pamusoro module zvigadzirwa zvinogona kupa rutsigiro kune akasiyana network mamiriro. Nyanzvi uye yakasimba R&D timu inogona kubatsira vatengi nenyaya dzehunyanzvi, uye timu inofunga uye ine hunyanzvi bhizinesi inogona kubatsira vatengi kuwana masevhisi emhando yepamusoro panguva yepamberi yekubvunzana uye mushure mekugadzira basa. Tinokugamuchirai taura nesu
