Recommendation ITU-T D.000 sets out the general principles for developing and using terms and definitions in the D-series Recommendations. The Recommendation also contains a list of definitions applicable to all D-series Recommendations.
ITU-T D.000-2010 Referenced Document
ITU-T D.000 Terms and definitions for the D-series Recommendations
ITU-T D.000-2010 history
2010ITU-T D.000-2010 Terms and definitions for the D-series Recommendations