O.81�:�A measuring signal (multitone test signal) for fast measurement of amplitude and phase for telephone type circuits

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O.81�:�A measuring signal (multitone test signal) for fast measurement of amplitude and phase for telephone type circuits �

Recommendation O.81 Appendix I (06/98)

Approved in 1998-06-26

Status : In force

�	Table of Contents
�	Summary
Formerly published as Supplement 3.7 in the Blue Book (1988), Fascicle IV.4, and then renumbered on 26 June 1998 as Appendix I to ITU-T O.81 without further modification

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