Fwd: New comment on "Is BIM (or more accurately, Revit) development really stagnating?"
OSI (Open Systems Interconnection), similar to TCP-IP, is a communications model. < http://en.wikipedia.org/wiki/OSI_model > The Open Systems Interconnection (OSI) model is a product of the Open Systems Interconnection effort at the International Organization for Standardization. It is a prescription of characterising and standardising the functions of a communications system in terms of abstraction layers. Similar communication functions are grouped into logical layers. A layer serves the layer above it and is served by the layer below it.