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ITU-T G.101 The transmission plan
ITU-T P.851 Subjective quality evaluation of telephone services based on spoken dialogue systems
ITU-T P.835 Subjective test methodology for evaluating speech communication systems that include noise suppression algorithm
ITU-T P.840 Subjective listening test method for evaluating circuit multiplication equipment
ITU-T G.131 Talker echo and its control
ITU-T D.140 AMD 3 Revised Annex A - Guidelines for the cost elements to be taken into account when determining accounting rates and accounting rate shares for the international telephone service
ITU-T Q Supplement 47 Emergency services for IMT-2000 networks - Requirements for harmonization and convergence
ITU-T P.380 Electro-acoustic measurements on headsets
ITU-T Y.1412 ATM-MPLS network interworking - Frame mode user plane interworking
ITU-T G.992.2 AMD 2 New Appendix IV: Example overlapped PSD masks for use in a TCM-ISDN crosstalk environment
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