OSI Model Although the Osi model is a just a model (not a specification), it is generally regarded as the most complete model(as well it should be nearly all of the popular network protocol suites in use today were developed before the OsI model was defined) CSIE NTUT TANANCSIE, NTUT, TAIWAN 9 OSI Model Although the OSI model is a just a model (not a specification), it is generally regarded as the most complete model (as well it should be - nearly all of the popular network protocol suites in use today were developed before the OSI model was defined)