Amplified multichannel dense wavelength division multiplexing applications with single channel optical interfaces In force ...

Facts and Figures 2025 offers a snapshot of the most important ICT indicators, including estimates for the current year.

Home : ITU-T : Publications : Recommendations : G Series : G.810Recently posted - Search Recommendations G.810 : Definitions and terminology for synchronization networks ...

ITU explores a collaborative approach to secure telephone networks for combating fraudulent communications with digital certificates.

If you are staying at a hotel, youth hostel or campsite in Geneva, the establishment may offer a "Geneva Transport Card", which gives free access to public transport in Geneva. Get more information ...

ITU is holding its 100th Radio Regulations Board meeting — a significant milestone in global spectrum governance.

Revised Annex A: Clarification and explanation of the structure and function of international ITU-T E.164-numbers In force ...

Revised Appendix I - Coefficients in video quality estimation function with respect to coding and packet-loss degradations Superseded ...

Your gateway to a wealth of information about ITU’s history: facts, figures, lists, dates, and a growing selection of digitized documents. Search the History Portal ...

Implementors Guide for Recommendations of the H.320 System ("Narrow-band visual telephone systems and terminal equipment"):H.320, H.221, H.224, H.230, H.242, H.243 ...

Revised Appendix VIII - Effects of IP network performance on digital television transmission QoS Superseded ...