ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. Some 179 member countries, 84 telecom operat
ITU-T X.802-1995 history
1995ITU-T X.802-1995 Information Technology - Lower Layers Security Model - Data Networks and Open System Communications - Security 22 pp