International Telecommunication Union Telecommunication Standardization Sector (ITU-T)

The International Telecommunication Union (ITU), headquartered in Geneva, Switzerland, is the leading United Nations agency for information and communication technologies. It has three sectors - ITU-R for radiocommunication, ITU-T for standardization, and ITU-D for development.

The Telecommunication Standardization Sector (ITU-T) specifies many telecommunications and data communications protocols.

History

The ITU-T (formerly the CCITT) is an international organization within the United Nations System where governments and the private sector coordinate global telecom networks and services.

External Links

• ITU-T Recommendations: You can download ITU protocol specification from this page, but they cost money.

• ITU-T Recommendations for free: As of 2007, PDF formats of in-force, posted ITU-T recommendations can be downloaded for free.

• ASN.1 Module Database: ASN.1 Descriptions of some protocols can be downloaded for free.