Open Systems Interconnection
(OSI-RM, OSI reference Model, seven layer model) A model of network architecture and a suite of ref="module.php?name=Lexikon&file=search&eid=1&query=protocols">protocols (a ref="module.php?name=Lexikon&file=search&eid=1&query=protocol stack">protocol stack) to implement it, developed by ref="module.php?name=Lexikon&file=search&eid=1&query=ISO">ISO in 1978 as a framework for international ref="module.php?name=Lexikon&file=search&eid=1&query=standards">standards in heterogeneous computer ref="module.php?name=Lexikon&file=search&eid=1&query=network">network architecture. The OSI architecture is split between seven ref="module.php?name=Lexikon&file=search&eid=1&query=layers">layers, from lowest to highest: 1 ref="module.php?name=Lexikon&file=search&eid=1&query=physical layer">physical layer, 2 ref="module.php?name=Lexikon&file=search&eid=1&query=data link layer">data link layer, 3 ref="module.php?name=Lexikon&file=search&eid=1&query=network layer">network layer, 4 ref="module.php?name=Lexikon&file=search&eid=1&query=transport layer">transport layer, 5 ref="module.php?name=Lexikon&file=search&eid=1&query=session layer">session layer, 6 ref="module.php?name=Lexikon&file=search&eid=1&query=presentation layer">presentation layer, 7 ref="module.php?name=Lexikon&file=search&eid=1&query=application layer">application layer. Each layer uses the layer immediately below it and provides a service to the layer above. In some implementations a layer may itself be composed of sub-layers. OSI is the umbrella name for a series of non-proprietary protocols and specifications, comprising, among others, the OSI reference Model, ASN.1 (ref="module.php?name=Lexikon&file=search&eid=1&query=Abstract Syntax Notation 1">Abstract Syntax Notation 1), BER (ref="module.php?name=Lexikon&file=search&eid=1&query=Basic Encoding Rules">Basic Encoding Rules), ref="module.php?name=Lexikon&file=search&eid=1&query=CMIP">CMIP and ref="module.php?name=Lexikon&file=search&eid=1&query=CMIS">CMIS (Common Management Information Protocol and Services), ref="module.php?name=Lexikon&file=search&eid=1&query=X.400">X.400 (Message Handling System, or MHS), ref="module.php?name=Lexikon&file=search&eid=1&query=X.500">X.500 (Directory Service), ref="module.php?name=Lexikon&file=search&eid=1&query=Z39.50">Z39.50 (search and retrieval protocol used by ref="module.php?name=Lexikon&file=search&eid=1&query=WAIS">WAIS), and many others. Apart from its actual application to real protocols, it also serves as a useful teaching model. (2004-02-13) In addition suitable contents:
[ ref="module.php?name=Lexikon&op=content&tid=31">2 ] [ ref="module.php?name=Lexikon&op=content&tid=134">= ] [ ref="module.php?name=Lexikon&op=content&tid=396">ag ] [ ref="module.php?name=Lexikon&op=content&tid=410">AI ] [ ref="module.php?name=Lexikon&op=content&tid=433">al ] [ ref="module.php?name=Lexikon&op=content&tid=544">am ] [ ref="module.php?name=Lexikon&op=content&tid=592">an ] [ ref="module.php?name=Lexikon&op=content&tid=683">app ] [ ref="module.php?name=Lexikon&op=content&tid=700">application ] [ ref="module.php?name=Lexikon&op=content&tid=709">application layer ] [ ref="module.php?name=Lexikon&op=content&tid=740">ar ] [ ref="module.php?name=Lexikon&op=content&tid=743">arc ] [ ref="module.php?name=Lexikon&op=content&tid=748">architecture ] [ ref="module.php?name=Lexikon&op=content&tid=799">AS ] [ ref="module.php?name=Lexikon&op=content&tid=800">as ] [ ref="module.php?name=Lexikon&op=content&tid=833">ASN ] [ ref="module.php?name=Lexikon&op=content&tid=834">ASN.1 ] [ ref="module.php?name=Lexikon&op=content&tid=894">at ] [ ref="module.php?name=Lexikon&op=content&tid=1025">B ] [ ref="module.php?name=Lexikon&op=content&tid=1026">b ] [ ref="module.php?name=Lexikon&op=content&tid=1133">Basic Encoding Rules ] [ ref="module.php?name=Lexikon&op=content&tid=1181">be ] [ ref="module.php?name=Lexikon&op=content&tid=1222">BER ] [ ref="module.php?name=Lexikon&op=content&tid=1444">bo ] [ ref="module.php?name=Lexikon&op=content&tid=1535">br ] [ ref="module.php?name=Lexikon&op=content&tid=1606">bs ] [ ref="module.php?name=Lexikon&op=content&tid=1695">by ] [ ref="module.php?name=Lexikon&op=content&tid=1708">C ] [ ref="module.php?name=Lexikon&op=content&tid=1724">ca ] [ ref="module.php?name=Lexikon&op=content&tid=1863">cat ] [ ref="module.php?name=Lexikon&op=content&tid=2001">ch ] [ ref="module.php?name=Lexikon&op=content&tid=2099">ci ] [ ref="module.php?name=Lexikon&op=content&tid=2136">ck ] [ ref="module.php?name=Lexikon&op=content&tid=2220">CM ] [ ref="module.php?name=Lexikon&op=content&tid=2226">CMIP ] [ ref="module.php?name=Lexikon&op=content&tid=2227">CMIS ] [ ref="module.php?name=Lexikon&op=content&tid=2247">co ] [ ref="module.php?name=Lexikon&op=content&tid=2330">com ] [ ref="module.php?name=Lexikon&op=content&tid=2391">Common Management Information Protocol ] [ ref="module.php?name=Lexikon&op=content&tid=2491">computer ] [ ref="module.php?name=Lexikon&op=content&tid=2976">D ] [ ref="module.php?name=Lexikon&op=content&tid=3006">data ] [ ref="module.php?name=Lexikon&op=content&tid=3054">data link layer ] [ ref="module.php?name=Lexikon&op=content&tid=3151">de ] [ ref="module.php?name=Lexikon&op=content&tid=3436">ding ] [ ref="module.php?name=Lexikon&op=content&tid=3752">du ] [ ref="module.php?name=Lexikon&op=content&tid=3834">E ] [ ref="module.php?name=Lexikon&op=content&tid=3865">ec ] [ ref="module.php?name=Lexikon&op=content&tid=3896">ed ] [ ref="module.php?name=Lexikon&op=content&tid=3929">ee ] [ ref="module.php?name=Lexikon&op=content&tid=4147">ER ] [ ref="module.php?name=Lexikon&op=content&tid=4148">er ] [ ref="module.php?name=Lexikon&op=content&tid=4171">es ] [ ref="module.php?name=Lexikon&op=content&tid=4199">et ] [ ref="module.php?name=Lexikon&op=content&tid=4497">fi ] [ ref="module.php?name=Lexikon&op=content&tid=4520">file ] [ ref="module.php?name=Lexikon&op=content&tid=4700">fo ] [ ref="module.php?name=Lexikon&op=content&tid=4727">for ] [ ref="module.php?name=Lexikon&op=content&tid=4828">fr ] [ ref="module.php?name=Lexikon&op=content&tid=4837">frame ] [ ref="module.php?name=Lexikon&op=content&tid=4849">framework ] [ ref="module.php?name=Lexikon&op=content&tid=5057">ge ] [ ref="module.php?name=Lexikon&op=content&tid=5070">gen ] [ ref="module.php?name=Lexikon&op=content&tid=5134">gh ] [ ref="module.php?name=Lexikon&op=content&tid=5434">h ] [ ref="module.php?name=Lexikon&op=content&tid=5600">heterogeneous ] [ ref="module.php?name=Lexikon&op=content&tid=5656">hing ] [ ref="module.php?name=Lexikon&op=content&tid=5664">hit ] [ ref="module.php?name=Lexikon&op=content&tid=5768">hr ] [ ref="module.php?name=Lexikon&op=content&tid=5931">id ] [ ref="module.php?name=Lexikon&op=content&tid=5956">ie ] [ ref="module.php?name=Lexikon&op=content&tid=6013">il ] [ ref="module.php?name=Lexikon&op=content&tid=6064">in ] [ ref="module.php?name=Lexikon&op=content&tid=6194">int ] [ ref="module.php?name=Lexikon&op=content&tid=6413">io ] [ ref="module.php?name=Lexikon&op=content&tid=6423">IP ] [ ref="module.php?name=Lexikon&op=content&tid=6449">ir ] [ ref="module.php?name=Lexikon&op=content&tid=6481">IS ] [ ref="module.php?name=Lexikon&op=content&tid=6482">is ] [ ref="module.php?name=Lexikon&op=content&tid=6508">ISO ] [ ref="module.php?name=Lexikon&op=content&tid=6558">it ] [ ref="module.php?name=Lexikon&op=content&tid=6822">ki ] [ ref="module.php?name=Lexikon&op=content&tid=6918">la ] [ ref="module.php?name=Lexikon&op=content&tid=7001">layer ] [ ref="module.php?name=Lexikon&op=content&tid=7091">Lex ] [ ref="module.php?name=Lexikon&op=content&tid=7107">li ] [ ref="module.php?name=Lexikon&op=content&tid=7176">link ] [ ref="module.php?name=Lexikon&op=content&tid=7399">ls ] [ ref="module.php?name=Lexikon&op=content&tid=7441">ly ] [ ref="module.php?name=Lexikon&op=content&tid=7457">M ] [ ref="module.php?name=Lexikon&op=content&tid=7463">ma ] [ ref="module.php?name=Lexikon&op=content&tid=7582">man ] [ ref="module.php?name=Lexikon&op=content&tid=7778">Message Handling System ] [ ref="module.php?name=Lexikon&op=content&tid=7836">MHS ] [ ref="module.php?name=Lexikon&op=content&tid=7984">MIS ] [ ref="module.php?name=Lexikon&op=content&tid=8019">mm ] [ ref="module.php?name=Lexikon&op=content&tid=8032">mo ] [ ref="module.php?name=Lexikon&op=content&tid=8040">mod ] [ ref="module.php?name=Lexikon&op=content&tid=8045">Mode ] [ ref="module.php?name=Lexikon&op=content&tid=8046">mode ] [ ref="module.php?name=Lexikon&op=content&tid=8050">model ] [ ref="module.php?name=Lexikon&op=content&tid=8079">module ] [ ref="module.php?name=Lexikon&op=content&tid=8167">mp ] [ ref="module.php?name=Lexikon&op=content&tid=8384">N ] [ ref="module.php?name=Lexikon&op=content&tid=8386">na ] [ ref="module.php?name=Lexikon&op=content&tid=8460">nc ] [ ref="module.php?name=Lexikon&op=content&tid=8472">ne ] [ ref="module.php?name=Lexikon&op=content&tid=8488">net ] [ ref="module.php?name=Lexikon&op=content&tid=8533">network ] [ ref="module.php?name=Lexikon&op=content&tid=8555">networking ] [ ref="module.php?name=Lexikon&op=content&tid=8558">network layer ] [ ref="module.php?name=Lexikon&op=content&tid=8622">nf ] [ ref="module.php?name=Lexikon&op=content&tid=8627">ng ] [ ref="module.php?name=Lexikon&op=content&tid=8675">no ] [ ref="module.php?name=Lexikon&op=content&tid=8760">ns ] [ ref="module.php?name=Lexikon&op=content&tid=8820">O ] [ ref="module.php?name=Lexikon&op=content&tid=8964">om ] [ ref="module.php?name=Lexikon&op=content&tid=9014">op ] [ ref="module.php?name=Lexikon&op=content&tid=9132">OS ] [ ref="module.php?name=Lexikon&op=content&tid=9145">OSI ] [ ref="module.php?name=Lexikon&op=content&tid=9147">OSI reference Model ] [ ref="module.php?name=Lexikon&op=content&tid=9148">OSI-RM ] [ ref="module.php?name=Lexikon&op=content&tid=9204">pa ] [ ref="module.php?name=Lexikon&op=content&tid=9457">pe ] [ ref="module.php?name=Lexikon&op=content&tid=9550">ph ] [ ref="module.php?name=Lexikon&op=content&tid=9572">physical ] [ ref="module.php?name=Lexikon&op=content&tid=9576">physical layer ] [ ref="module.php?name=Lexikon&op=content&tid=9651">pl ] [ ref="module.php?name=Lexikon&op=content&tid=9821">port ] [ ref="module.php?name=Lexikon&op=content&tid=9908">pr ] [ ref="module.php?name=Lexikon&op=content&tid=9937">presentation layer ] [ ref="module.php?name=Lexikon&op=content&tid=10087">proprietary ] [ ref="module.php?name=Lexikon&op=content&tid=10096">protocol ] [ ref="module.php?name=Lexikon&op=content&tid=10101">protocol stack ] [ ref="module.php?name=Lexikon&op=content&tid=10253">query ] [ ref="module.php?name=Lexikon&op=content&tid=10364">rc ] [ ref="module.php?name=Lexikon&op=content&tid=10385">re ] [ ref="module.php?name=Lexikon&op=content&tid=10390">real ] [ ref="module.php?name=Lexikon&op=content&tid=10767">ro ] [ ref="module.php?name=Lexikon&op=content&tid=10918">S ] [ ref="module.php?name=Lexikon&op=content&tid=10922">sa ] [ ref="module.php?name=Lexikon&op=content&tid=11150">se ] [ ref="module.php?name=Lexikon&op=content&tid=11259">serve ] [ ref="module.php?name=Lexikon&op=content&tid=11269">service ] [ ref="module.php?name=Lexikon&op=content&tid=11276">session ] [ ref="module.php?name=Lexikon&op=content&tid=11278">session layer ] [ ref="module.php?name=Lexikon&op=content&tid=11295">seven layer model ] [ ref="module.php?name=Lexikon&op=content&tid=11375">SI ] [ ref="module.php?name=Lexikon&op=content&tid=11376">si ] [ ref="module.php?name=Lexikon&op=content&tid=11650">SO ] [ ref="module.php?name=Lexikon&op=content&tid=11651">so ] [ ref="module.php?name=Lexikon&op=content&tid=11790">spec ] [ ref="module.php?name=Lexikon&op=content&tid=11801">specification ] [ ref="module.php?name=Lexikon&op=content&tid=11851">split ] [ ref="module.php?name=Lexikon&op=content&tid=11934">st ] [ ref="module.php?name=Lexikon&op=content&tid=11939">stack ] [ ref="module.php?name=Lexikon&op=content&tid=11956">standard ] [ ref="module.php?name=Lexikon&op=content&tid=12133">su ] [ ref="module.php?name=Lexikon&op=content&tid=12162">suit ] [ ref="module.php?name=Lexikon&op=content&tid=12359">T ] [ ref="module.php?name=Lexikon&op=content&tid=12416">tar ] [ ref="module.php?name=Lexikon&op=content&tid=12588">th ] [ ref="module.php?name=Lexikon&op=content&tid=12721">to ] [ ref="module.php?name=Lexikon&op=content&tid=12787">tr ] [ ref="module.php?name=Lexikon&op=content&tid=12827">transport layer ] [ ref="module.php?name=Lexikon&op=content&tid=12939">tw ] [ ref="module.php?name=Lexikon&op=content&tid=12986">ua ] [ ref="module.php?name=Lexikon&op=content&tid=13030">um ] [ ref="module.php?name=Lexikon&op=content&tid=13175">us ] [ ref="module.php?name=Lexikon&op=content&tid=13252">va ] [ ref="module.php?name=Lexikon&op=content&tid=13310">ve ] [ ref="module.php?name=Lexikon&op=content&tid=13366">vi ] [ ref="module.php?name=Lexikon&op=content&tid=13563">WAIS ] [ ref="module.php?name=Lexikon&op=content&tid=13891">X ] [ ref="module.php?name=Lexikon&op=content&tid=13917">X.400 ] [ ref="module.php?name=Lexikon&op=content&tid=13919">X.500 ] [ ref="module.php?name=Lexikon&op=content&tid=14042">ye ] [ ref="module.php?name=Lexikon&op=content&tid=14079">Z ] [ ref="module.php?name=Lexikon&op=content&tid=14083">Z3 ] [ ref="module.php?name=Lexikon&op=content&tid=14084">Z39.50 ]
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