International Telecommunication Union

ITU Year in Review 2025: Secretary-General’s message

The ITU Secretary-General invites you to explore the Year in Review and join in shaping a shared digital future.
ITU

Recommendation H.248.1

The former Recommendation H.248 was renumbered as H.248.1 when revised on 2002-03-29. It contains Annexes A to E and Appendix I of former H.248. Subsequent annexes are sequentially numbered in the ...
ITU

BS.2088 : Long-form file format for the international exchange of audio programme materials with metadata

Recently posted - Search Recommendations BS.2088 : Long-form file format for the international exchange of audio programme materials with metadata ...
ITU

X.224 : Information technology - Open Systems Interconnection - Protocol for providing the connection-mode transport service

Relaxation of class conformance requirements and expedited data service feature negotiation In force ...
ITU

Maritime Publications

List V is published annually, as per the Radio Regulations this publication shall be provided to all ship stations for which a Global Maritime Distress and Safety System (GMDSS) installation is ...
ITU

ITU-R Recommendations

The ITU-R Recommendations constitute a set of international technical standards developed by the Radiocommunication Sector (formerly CCIR) of the ITU. They are the result of studies undertaken by ...
ITU

G.9960 : Unified high-speed wireline-based home networking transceivers - System architecture and physical layer specification

Recently posted - Search Recommendations G.9960 : Unified high-speed wireline-based home networking transceivers - System architecture and physical layer specification ...
ITU

P.836 : Water vapour: surface density and total columnar content

Home : ITU-R : Publications : Recommendations : P Series : P.836Recently posted - Search Recommendations P.836 : Water vapour: surface density and total columnar content ...
ITU

National CIRT

Effective mechanisms and institutional structures at the national level are necessary to reliably deal with cyber threats and incidents. The absence of such institutions and lack of national ...
ITU

ITU-R Recommendations

This disk contains all the ITU-R Recommendations and Reports in force and available at the publication date. The files are available in Adobe Acrobat PDF format, as well as in their original Word for ...
ITU

H.245 : Control protocol for multimedia communication

Implementors' Guide for Recommendations of the H.323 System (Packet-based multimedia communications systems): H.323, H.225.0, H.245, H.246, H.283, H.341, H.450 Series ...
ITU

Consideration of aggregate radio frequency interference event potentials from multiple Earth exploration-satellite service systems on radionavigation-satellite service ...

You are here Homepage > ITU Publications > Radiocommunication (ITU-R) > ITU-R Reports > Mobile, radiodetermination, amateur and related satellite services > Consideration of aggregate radio frequency ...