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ITU-T Test Signals for Telecommunication Systems

Conformance and Test Data

Many ITU-T Recommendations contain test signals intended to test end-to-end quality of telecommunications systems and to assess implementations conformity to specific Recommendation provisions. These test data cover the different types of media: audio, still images and moving images. ITU-T test signals are a highly valuable collection of more than 20 GB size that constitute a worldwide reference for assessing the different components of telecommunications systems.

Test signals database

In order to facilitate their use, ITU-T test signals were grouped into a single database.

Below one may find the list of ITU-T Recommendations that contain freely available test signals for download. Each link below opens a webpage with a short description of the relevant content and a link to download the relevant test signals.
The signals available here constitute part of the corresponding ITU-T Recommendations and are protected by copyrights laws.
You may use them during product or service development for the purpose of implementing the corresponding ITU-T Recommendations.
In the downloading section, when applicable, one can preview or hear samples of the available signal(s).


Audio | Still image | Video | Other


Voice and audio

General purpose signals

Recommendation-specific signals


ITU-T P-series: Telephone transmission quality, telephone installations, local line networks


ITU-T G-series: Audio and voice coders

ITU-T V-series: Data communication over the telephone network

Still Image

General purpose signals

Recommendation-specific signals


ITU-T T-series: Terminals for telematic services


ITU-T T-series: Terminals for telematic services

Video

General purpose signals

Recommendation-specific signals


ITU-T H-series: Audiovisual and multimedia systems


ITU-T H-series: Audiovisual and multimedia systems


ITU-T J-series: Networks and transmission of television, sound programme and other multimedia signals

Other

General purpose

Recommendation-specific


ITU-T G-series: Multimedia Quality of Service and performance - Generic and user-related aspects

ITU-T H-series: Audiovisual and multimedia systems

 
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Updated: 2015-04-15