Open Systems Interconnection Open System Interconnection Open Systems Interconnect Office of Special Investigations Open Source Initiative Open System Interconnect Office of Systems Integration Open Society Institute Open System Interface Operating Space Items Office of Special Investigation On Site Inspection Open Switching Interval Ocular Scanning Instrumentation Office of Scientific Integrity Office of Scientific Intelligence Office of Strategic Information Online Service Information On-Site Inspection Open Standards Interconnection operational subsystem interface Objective Systems Integration Objective Systems Integrators Occupational Stress Indicator Ocean Security Initiative Office of Scientific Information Office of Scientific Investigation office of security inquires Office of Strategic Influence Office of Systems Integrations
Open Systems Interconnection
Open System Interconnect