ITU-T - International Telecommunications Union-Telecommunication Standardization Sector

The ITU-T is an international body that develops worldwide standards for telecommunications technologies. These standards are grouped together in series which are prefixed with a letter indicating the general subject and a number specifying the particular standard. The ITU-T was formally known as the CCITT (Consultative Committee for International Telegraphy and Telephony).


  • Fully interactive 3GPP based network map
  • Narrated call flows
  • Detailed network procedures

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