| Subject | English | Finnish |
| commun., IT | open systems interconnection environment | OSI-ympäristö |
| commun., IT | open systems interconnection management | OSI-järjestelmän hallinta |
| comp., MS | Open Systems Interconnection model | Avointen järjestelmien yhteenliittäminen (A networking model introduced by the International Organization for Standardization (ISO) to promote multi-vendor interoperability. OSI is a seven-layered conceptual model consisting of the application, presentation, session, transport, network, data-link, and physical layers) |
| commun., comp. | open systems interconnection reference model | OSI-malli |
| commun., comp. | open systems interconnection reference model | OSI-viitemalli |
| commun., comp. | open systems interconnection reference model | OSI |