Molweni, Bafundi.Kweli nqaku ndiza kuxoxa nge-OSI-Data yoLawulo lweMposiso yoMaleko ngengcaciso.Masiqalise…
Ukuqonda ukuhanjiswa kwedatha yekhonkco yedatha makhe sithathe umzekelo, ukuba isixhobo A sifuna ukunxibelelana nesixhobo B, ikhonkco lonxibelelwano kunye noluhlu lwezixhobo ziyafuneka.Ukuba umgca wonxibelelwano wonke awunayo indlela yokulawula impazamo, ke kuphela idatha ethunyelwe ngu-A iya kuthunyelwa ngu-B. Ukuba kukho indlela yokulawula impazamo kumgca wonxibelelwano, idatha ethunyelwe ukusuka ku-A ukuya ku-B iya kufunyanwa njenge Impazamo kwisixhobo esikufutshane no-A, kwaye u-A ufuna ukuthunyelwa kwakhona, kwaye isakhelo sedatha esichanekileyo sinokuthunyelwa kuqala.Ukuba ithunyelwe kwicala le-B, ngoko umgca wonke unokugcina izibonelelo, eyona ndlela yokulawula impazamo yoluhlu lwedatha.
Ulawulo lwemposiso yomaleko wekhonkco lwedatha lujolise ikakhulu kwiimpazamo ezincinci kwikhonkco.Kukho ubukhulu becala iindlela ezimbini zolawulo, ezahlulahlulwe zibe yimposiso yobhaqo lwekhowudi kunye nokulungiswa kweekhowudi.Imposiso yokubhaqa ikhowudi ibandakanya ukulingana kunye ne-cyclic redundancy CRC, ngelixa ukulungiswa kwekhowudi yokulungiswa kwempazamo kubandakanya ikhowudi yeHaming.
Ukubhalwa kwekhowudi kunye nokumodareyithwa komgca wekhonkco kunye nomgangatho womzimba wahlukile.Umaleko womzimba ngowesuntswana elinye lokusombulula ingxaki yongqamaniso lwebit kwinkqubo yothumelo, njenge-Manchester coding.Ukufakwa kwekhowudi yedatha yekhonkco yedatha ijolise kwiseti yedatha encinci, kwaye iqonda ukulawulwa kwempazamo yokuveliswa kweseti yedatha yebhinari kwinkqubo yokuhanjiswa ngetekhnoloji yekhowudi yokuphindaphinda.
Oku ngasentla yingcaciso yolwazi "ye-OSI-Data Link Layer-Error Control" eziswa nguShenzhen Shenzhen HDV photoelectric Technology Co., Ltd. Iimveliso zonxibelelwano eziveliswa yinkampani zigubungela;Iindidi zeemodyuli:iimodyuli zefiber optical, Iimodyuli ze-Ethernet, iimodyuli ze-fiber optical transceiver, iimodyuli zokufikelela kwifiber optical, Iimodyuli ze-SSFP ezibonakalayo, kwayeI-SFP optical fibers, njl.
Udidi lwe-ONU: EPON ONU, AC ONU, ifayibha optical ONU, CATV ONU, GPON ONU, XPON ONU, njl.
iklasi ye-OLT: Ukutshintsha OLT, GPON OLT, EPON OLT, unxibelelwano OLT, njl.
Iimveliso zemodyuli ezingentla zinokubonelela ngenkxaso yeemeko ezahlukeneyo zenethiwekhi.Iqela le-R&D elinobuchwephesha kunye nelomeleleyo linokunceda abathengi abanemiba yobugcisa, kwaye iqela leshishini elicingayo nelinobuchule linokunceda abathengi bafumane iinkonzo ezikumgangatho ophezulu ngexesha lokubonisana kwangaphambili kunye nomsebenzi wasemva kokuvelisa.Wamkelekile kuwe qhagamshelana nathi
