Open Systems Interconnection

Open Systems Interconnection (OSI) is an internationally standardized architecture that permits communications between different types of computer systems.

For OSI to operate successfully, information objects must have unique, unambiguous names and addresses. The Canadian OSI Registration Authority (COSIRA) maintains Canada's official registry of OSI objects.

OSI registration is available to Canadian industry, service providers, universities, federal government departments and partners in the provincial governments.

COSIRA offers registration of the various OSI information objects:

• Network layer Services Access Point (NSAP) address;
• Object IDentifier (OID);
• X.400 ADministrative Management Domain name (ADMD) and PRivate Management Domain name (PRMD);
• X.500 Distinguished Name (DN) and Relative Distinguished Name (RDN).