ITU-T-R.4 Methods for the Separate Measurements of the Degrees of Various Types of Telegraph Dis

ITU-T-R.4 - 1980 EDITION - CURRENT



Methods for the Separate Measurements of the Degrees of Various Types of Telegraph Dis


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Document Number

ITU-T-R.4

Revision Level

1980 EDITION

Status

Current

Publication Date

Nov. 1, 1980