ATM ndichidule cha Njira Yowonetsera Asynchronous. Ndimagwirizanidwe othamanga kwambiri omwe amatha kuthandiza mauthenga, mavidiyo ndi deta, komanso kuti apititse patsogolo ntchito komanso mautumiki apamwamba.
ATM imagwiritsidwa ntchito ndi ogwira ntchito pa intaneti pamtunda wawo wapatali. ATM imagwira ntchito yosanjikizana yachinsinsi (Gawo 2 muchitsanzo cha OSI ) pa fiber kapena pirati yopotoka.
Ngakhale kuti ikuyendetsedwa ndi NGN (mzere wamakono), malamulowa ndi ofunikira ku msana wa SONET / SDH, PSTN (public switched telephone network) ndi ISDN (Integrated Services Digital Network).
Zindikirani: ATM imayimiranso makina odziwitsidwa . Ngati mukuyang'ana mtundu wa makina a ATM (kuti muwone komwe kuli ATM), mungapeze ATM Locator kapena Mastercard ATM Locator kuti mukhale othandiza.
Momwe ATM Networks imagwirira ntchito
ATM imasiyanasiyana ndi matekinoloje okhudzana ndi ma data monga Ethernet m'njira zingapo.
Kwa imodzi, ATM imagwiritsira ntchito zero njira. M'malo mogwiritsa ntchito mapulogalamu, mafayilo opangidwa ndi ma CD omwe amadziwika kuti kusintha kwa ATM amapanga kugwirizana kwa mfundo zomwe zilipo pakati pa mapeto ndi deta zomwe zimachokera ku gwero lolowera.
Kuwonjezera apo, mmalo mogwiritsa ntchito mapepala otalika osiyanasiyana monga Ethernet ndi Internet Protocol, ATM imagwiritsa ntchito maselo ofikirapo kuti ayang'ane deta. Maselo a ATM awa ndi maekala 53 m'litali, kuphatikizapo 48 bytes of data ndi five bytes of header information.
Selo lirilonse likukonzedwa pa nthawi yawo. Imodzi ikadzatha, ndondomekoyi imapempha kuti selo lotsatira lichitike. Ichi ndi chifukwa chake amatchedwa asynchronous ; Palibe imodzi mwa izo yomwe imachoka panthawi yofanana ndi maselo ena.
Kulumikizidwa kungakhale koyambitsidwa ndi wothandizira ntchito kuti apange dera lodzipatulira / losatha kapena kusinthidwa / kukhazikitsidwa pafunidwe ndikuchotseratu kumapeto kwa ntchito yake.
Ndalama zinayi zapadera zimapezeka pazinthu za ATM: Kupezeka kwa Mtengo Wowonjezera, Kulipira Mtengo Wonse, Kusadziwika kwa Mtengo Wache ndi Kusintha Mtengo wa Mtengo (VBR) .
Kuchita kwa ATM nthawi zambiri kumawonetsedwa mwa mawonekedwe a OC (Optical Carrier), omwe amalembedwa ngati "OC-xxx." Zochita zapamwamba kuposa 10 Gbps (OC-192) zimathekadi ndi ATM. Komabe, zambiri za ATM ndi 155 Mbps (OC-3) ndi 622 Mbps (OC-12).
Popanda kuyenda ndi maselo osakanikirana, ma intaneti angathe kuyendetsa bwino magetsi pansi pa ATM kuposa njira zamakono monga Ethernet. Mtengo wapatali wa ATM wofanana ndi Ethernet ndi chinthu chimodzi chomwe chalepheretsa kuvomerezedwa kumbuyo ndi ntchito zina zotchuka kwambiri.
ATM opanda waya
Makompyuta opanda waya omwe ali ndi maziko a ATM amatchedwa ATM ya m'manja kapena ATM opanda waya. Mtundu uwu wa makina a ATM wapangidwa kuti apereke mauthenga apamwamba othamanga.
Mofanana ndi matekinoloje ena opanda waya, maselo a ATM amawatumiza kuchokera ku malo osungirako zinthu ndikuwapititsa kumalo osungirako mafanelo kumene kuwombera kwa ATM kumapangitsa kugwira ntchito.
VoATM
Pulogalamu ina ya deta yomwe imatumiza mapepala, mawu ndi ma data kudzera mu intaneti ya ATM imatchedwa Voice over Asynchronous Transfer Mode (VoATM). Zili zofanana ndi VoIP koma sizigwiritsa ntchito IP protocol ndipo ndizofunika kwambiri kuti zitsatire.
Mtundu wamtundu wamtundu uwu umalowetsamo pakalata AAL1 / AAL2 ATM.