- International Telecommunication Union (ITU)
- International Organization for Standardization (ISO)
- European Telecommunications Standards Institute (ETSI)
- Asia-Pacific Telecommunity (APT)
- European Radio-communication Office (ERO)
- International Maritime Organization (IMO)
- International Civil Aviation Organization (ICAO)
- European Committee for Standardization (CEN)
- European Committee for Electro-technical Standardization (CENELEC)
- Korea Communications Commission (KCC)
- Ministry of Government Legislation
- Ministry of Knowledge Economy
- Korean Agency for Technology and Standards (KATS)
- National Telecommunications and Information Administration (NTIA)
- Ministry of Internal Affairs and Communications
- Federal Communications Commission (FCC)
- National Institute of Standards and Technology (NIST)
- Standard Council of Canada (SCC)
- Association Francaise de Normalisation (AFNOR)
- British Standards Institution (BSI)
- Deutsches Institut fur Normung (DIN)
- Japanese Industrial Standards Committee (JISC)
- Electronics and Telecommunication Research Institute (ETRI)
- Korea Radio Promotion Agency (KORPA)
- Telecommunications Technology Association (TTA)
- American National Standard Institute (ANSI)
- Association of Radio Industries and Business (ARIB)
- Korea Radio Promotion Association (RAPA)
- Korea Research Institute of Standard and Science (KRISS)
- Korean Standards Association (KSA)
