ITU-T O 81 NOTE-2000 A measuring signal (multitone test signal) for fast measurement of amplitude and phase for telephone type circuits《快速测量振幅和电话型电路相位的信号测量(多频测试信号)》.pdf

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.