X.40�:�Standardization of frequency-shift modulated transmission systems for the provision of telegraph and data channels by frequency division of a group

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X.40�:�Standardization of frequency-shift modulated transmission systems for the provision of telegraph and data channels by frequency division of a group �

Recommendation X.40

Withdrawn on 12.03.1993

Superseded and Withdrawn components
Number	Title	Status
X.40 (11/88) �	Standardization of frequency-shift modulated transmission systems for the provision of telegraph and data channels by frequency division of a group �	Withdrawn

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