ITU-T Recommendation J.19 was published in Fascicle III.6 of the Blue Book. This file is an extract from the Blue Book.While the presentation and layout of the text might be slightly different from the Blue Book version,the contents of the file are identical to the Blue Book version and copyright conditions remain unchanged (see below).
ITU-T J.19-1988 history
1988ITU-T J.19-1988 A CONVENTIONAL TEST SIGNAL SIMULATING SOUND - PROGRAMME SIGNALS FOR MEASURING INTERFERENCE IN OTHER CHANNELS