Computer security: (5) Access control models: (5. 5) Role-based access Control RBAC: Three Primary Rules Are Defined for RBAC: (4) Telecommunication: In telecommunication, the term access control is defined in U. S. Federal Standard 1037C with the following meanings: (4. 1) A service feature or technique used to permit or deny use of the components of a communication system. (4. 2) A technique used to define or restrict the rights of individuals or application programs to obtain data from, or place data onto, a storage device. (4. 3) The definition or restriction of the rights of individuals or application programs to obtain data from, or place data into, a storage device. (4. 4) The process of limiting access to the resources of an AIS to authorized users, programs, processes, or other systems. (4. 5) That function performed by the resource controller that allocates system resources to satisfy user requests. This definition depends on several other technical terms from Federal Standard 1037C