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The main purpose of this List is to indicate all the ITU-T (formerly CCITT) Recommendations currently in effect at the date of its publication.
International Numbering Resources
Bureaufax Table, International Country Codes, ITU Carrier Codes, National Numbering Plan, Reserved and Assigned E.164 Network Codes, Universal Numbers
ITU-T Conformity Database
A global database that will allow vendors to log products and declare conformity to ITU-T standards (ITU-T Recommendations).
ITU-T Patents Database
In order to facilitate both the standards making process and the application of ITU-T Recommendations, the Telecommunication Standardization Bureau (TSB) is making available the ITU-T Patent Statements database composed of information that was communicated to the TSB by administrations, private enterprises, etc. that participate in the standards making activities of the ITU-T Study Groups.
ITU-T Software Copyright Database
Some ITU-T Recommendations incorporate software. Implementors of these Recommendations may need a copyright license in order to implement a complying product. This database provides information that was communicated to the TSB with Software Copyright Statement and Licensing declaration forms.
ITU-T Formal descriptions and Object identifiers databases
These free access databases contain machine procesable copies of the formal information included in ITU-T Recommendations. Formal description languages include ASN.1, XML, MIB, LDIF, GDMO, UML. Object identifiers database include the UUID, a unique object identifier server.
ITU-T Test Signal Database
ITU-T Test Signal Database contains a collection of audio, still image and video test signals that constitute a worldwide reference for assessing the end-to-end quality of telecommunications systems and for establishing the conformance of implementations to specifications within ITU-T Recommendations
ITU-T Work Programme
This work programme is a real time application giving all information related to study group structure, work items, status, reference documents and contacts.
ITU-T Terms & Definitions
Online database providing access to terms, definitions and acronyms defined within ITU-T and ITU-R normative publications.
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