1. Organizacións nacionais
- CEN – European Committe for Standardization
- CENELEC – Comité Eutopeo de Normalización Electrotécnica
- ETSI – Comité Eutopeo de Normalización
- ISO – International Organization for Standardization
- IEC – International Electrotechnical Commission
- ITU-T – International Telecommunication Union Telecommunication Standarization Sector
- IEEE – Institute of Electrical and Electronics Engineers
2. Organizacións nacionais
- Asociación Española de Normalización (AENOR)
- Canada Standards Council of Canada (SCC)
- France Association française de normalisation (AFNOR)
- Germany Deutsches Institut für Normung (DIN)
- Ireland National Standards Authority of Ireland (NSAI)
- Iceland Icelandic Council for Standardization (STRI)
- Portugal Instituto Português da Qualidade (IPQ)
- United Kingdom British Standards Institution (BSI)
- USA American National Standards Institute (ANSI)