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OSIsoft, LLC is a manufacturer of application software for real-time data management, called the PI System. Founded in 1980, OSIsoft was privately held and headquartered in San Leandro, California .
Automatic Systems International, Inc. (ASI), or Open Systems International (OSI) is an automation software company headquartered in Medina, Minnesota, with international offices in Canada, Colombia, Spain, India, Dubai, Australia, Singapore, and China. Founded in 1992, OSI is privately held and employee-owned. [1]
OSI had two major components: an abstract model of networking, called the Basic Reference Model or seven-layer model, and a set of specific protocols. The OSI reference model was a major advance in the standardisation of network concepts. It promoted the idea of a consistent model of protocol layers, defining interoperability between network ...
OSI model Layer Protocol data unit (PDU) Function [3]; Host layers 7 Application: Data: High-level protocols such as for resource sharing or remote file access, e.g. HTTP. 6
In practice, from 1995 interest in OSI implementations declined, and worldwide the deployment of standards-based networking services since have been predominantly based on the Internet protocol suite. [7] However, the Defense Messaging System continued to be based on the OSI protocols X.400 and X.500, due to their integrated security capabilities.
This article lists protocols, categorized by the nearest layer in the Open Systems Interconnection model.This list is not exclusive to only the OSI protocol family.Many of these protocols are originally based on the Internet Protocol Suite (TCP/IP) and other models and they often do not fit neatly into OSI layers.
FSF's free software and OSI's open-source licenses together are called FOSS licenses. There are licenses accepted by the OSI which are not free as per the Free Software Definition . The Open Source Definition allows for further restrictions like price, type of contribution and origin of the contribution, e.g. the case of the NASA Open Source ...
OSI Pharmaceuticals, an American pharmaceutical company; OSI Restaurant Partners, the restaurant and entertainment group that includes Outback Steakhouse; OSI Systems, a company that manufactures security scanners and medical equipment based in California; OSIsoft, a privately held company that develops device connectivity software