ITU-T G 997 1 NOTE-2016 Physical layer management for digital subscriber line transceivers (Study Group 15)《数字用户线收发器的物理层管理》.pdf
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1、Union internationale des tlcommunications Place des Nations 1211 GENEVE 20 Suisse Switzerland Suiza COVERING NOTE GENERAL SECRETARIAT OF THE INTERNATIONAL TELECOMMUNICATION UNION Geneva, 19 February 2016 ITU TELECOMMUNICATION STANDARDIZATION SECTOR Subject: Erratum 1 (02/2016) to Recommendation ITU-
2、T G.997.1 (06/2012), Physical layer management for digital subscriber line transceivers Correct the indentation of the fourth bullet item in clause 7.2.7.13 to read: SES-L, SES-LFE, ES-L, ES-LFE, LOSS-L and LOSS-LFE counters shall be inhibited only during unavailable time even if the unavailable time is declared retroactively. NOTE An implementation may count the SES-L, ES-L and LOSS-L during the contiguous SES-L leading to the declaration of UAS-L and substract them at the onset of the declaration of UAS-L. The same may apply for the LOSS-LFE. See illustration in Figure 4 of b-ITU-T M.2100.
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