Zosanjikiza zakuthupi zili m'munsi mwa chitsanzo cha OSI, ndipo ntchito yake yaikulu ndikugwiritsa ntchito sing'anga yopatsirana kuti ipereke mgwirizano wakuthupi kwa wosanjikiza wa data kuti utumize mitsinje yaying'ono.Kusanjikiza kwa thupi kumatanthawuza momwe chingwecho chikugwirizanirana ndi khadi la intaneti, ndi zomwe teknoloji yotumizira iyenera kugwiritsidwa ntchito kutumiza deta pa chingwe, ndikutanthauzira njira yopezera chapamwamba (data link layer).
Nthawi zambiri, zida zomwe zimakhala ndi mphamvu zina zopangira ndi kutumiza ndi kulandira zimatchedwa zida zomaliza za data (DTE), ndipo zida zomwe zili pakati pa DTE ndi sing'anga yotumizira zimatchedwa data circuit terminating equipment (DCE).DCE imapereka ntchito zosinthira ma siginecha ndi ma encoding pakati pa DTE ndi sing'anga yotumizira, ndipo ili ndi udindo wokhazikitsa, kusunga ndi kutulutsa maulumikizidwe akuthupi.Chifukwa DCE ili pakati pa DTE ndi sing'anga yotumizira, panthawi yolumikizirana, DCE imatumiza zidziwitso za DTE kupita ku sing'anga yotumizira mbali imodzi, ndipo mbali inayo, imayenera kufalitsa mtsinje wolandila kuchokera ku njira yotumizira ku DTE motsatizana., DCE ikufunika kutumiza chidziwitso cha deta ndi chidziwitso chowongolera, ndipo imayenera kugwira ntchito molumikizana bwino, kotero ndikofunikira kupanga mawonekedwe a mawonekedwe a DTE ndi DCE, miyezo iyi ndi miyezo ya mawonekedwe akuthupi.
Ndipo muyezo uwu umatanthawuza mikhalidwe inayi yakusanjika kwakuthupi:
1. Makhalidwe amakina: Tanthauzirani mawonekedwe a kugwirizana kwa thupi, tchulani ndondomeko, mawonekedwe a mawonekedwe, chiwerengero cha zitsogozo, chiwerengero ndi makonzedwe a zikhomo zomwe zimagwiritsidwa ntchito pogwirizanitsa thupi, ndi zina zotero.
2. Makhalidwe amagetsi: Pofotokoza za kutumiza kwa ma bits a binary, mtundu wa voteji, kufananiza kwa impedance, kuchuluka kwa kutumizira ndi malire a mtunda wa chizindikiro pa mzere, ndi zina zotero.
3. Makhalidwe ogwirira ntchito: amasonyeza tanthauzo la mlingo wina pa mzere wina, ndi cholinga cha mzere wa chizindikiro chomwe mawonekedwe ake sakuwoneka.
4. Makhalidwe a ndondomeko (makhalidwe a ndondomeko): fotokozani ndondomeko zogwirira ntchito ndi maubwenzi a nthawi ya dera lililonse
Zomwe zili pamwambazi ndi kufotokozera kwa chidziwitso cha "OSI-Physical Layer Characteristics" yobweretsedwa ndi Shenzhen HDV photoelectric Technology Co., Ltd. Zinthu zoyankhulirana zopangidwa ndi chivundikiro cha kampani:
Magawo a module: Optical fiber modules, Ethernet modules, Optical fiber transceiver modules, optical fiber access modules, SSFP Optical modules,ndiSFP kuwala ulusi, ndi zina.
Gulu la ONU: EPON ONU, AC ONU, Optical fiber ONU, CATV ONU, GPON ONU, XPON PA, ndi zina.
kalasi ya OLT: Kusintha kwa mtengo wa OLT, Mtengo wa GPON OLT, EPON OLT, kulumikizana OLT, etc.
Zomwe zili pamwambazi zitha kuthandizira pazochitika zosiyanasiyana zapaintaneti.Gulu la akatswiri komanso lamphamvu la R&D litha kuthandiza makasitomala omwe ali ndi zovuta zaukadaulo, ndipo gulu loganiza bwino komanso laukadaulo litha kuthandiza makasitomala kupeza ntchito zapamwamba panthawi yokambirana zisanachitike komanso pambuyo popanga.Takulandirani ku Lumikizanani nafezakufunsa kwamtundu uliwonse.
