1、Union internationale des tlcommunications Place des Nations 1211 GENVE 20 Suisse Switzerland Suiza COVERING NOTE GENERAL SECRETARIAT INTERNATIONAL TELECOMMUNICATION UNION Subject: Erratum Geneva, 5 June 2000 Recommendation ITU-T O.81/Appendix I (06/98) TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU
2、 ITU-T Recommendation O.81/Appendix I (06/98) A measuring signal (multitone test signal) for fast measurement of amplitude and phase for telephone type circuits Replace NOTE on page (ii) by the following: NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency.