ITU International Telecommunication Union

SG General Secretariat

ITU-R Radiocommunication Sector

• BR Radiocommunication Bureau
• ITU-R Recommendations
• RRB Radio Regulations Board
• SG Study Groups
• RAG Radiocommunication Advisory Group
• WRC World Radiocommunication Conference
• RA Radiocommunication Assembly
• RRC Regional Radiocommunication Conference

ITU-T Telecommunication Standardization Sector

• TSB Telecommunication Standardization Bureau
• ITU-T Recommendations
• SG Study Groups
• TSAG Telecommunication Standardization Advisory Group
• WTSA World Telecommunication Standardization Assembly

ITU-D Telecommunication Development Sector

• BDT Telecommunication Development Bureau
• ITU-D Recommendations
• SG Study Groups
• TDAG Telecommunication Development Advisory Group
• WTDC World Telecommunication Development Conference
• RTDC Regional Telecommunication Development Conference

WCIT World Conference on International Telecommunication

WSIS World Summit on the Information Society