ITU-T G 991 2 NOTE-2005 Single-pair High-Speed Digital Subscriber Line (SHDSL) transceivers Amendment 2《单线对高速数字用户线(SHDSL)收发信机-修正1》.pdf

1、Union internationale des tlcommunications Place des Nations 1211 GENEVE 20 Suisse Switzerland Suiza COVERING NOTE GENERAL SECRETARIAT OF THE INTERNATIONAL TELECOMMUNICATION UNION Geneva, 22 November 2005 ITU TELECOMMUNICATION STANDARDIZATION SECTOR Subject: Erratum 1 (11/2005) to ITU-T Recommendatio

2、n G.991.2 (2003) Amend.2 (02/2005), 1) In clause B.2.4 replace ME by MAE in the left-hand part of the equation as follows: NonlAttenuatiTheoreticanuationActualAtteNiii=1MAE 2) In Annex G, clause G.2, correct table G.1 as follows: Table G.1/G.991.2 Framed data mode rates Payload data rate, R (kbit/s) Modulation Symbol rate (ksymbol/s) K (Bits per symbol) R = n 64 + i 8 16-TCPAM (R+8)3 3 R = n 64 + i 8 1632-TCPAM (R+8)4 4