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Speech and multimedia Transmission Quality (STQ); Estimating Speech Quality per Call 语音和多媒体传输质量(STQ);估计每次通话的语音质量
发布日期: 2011-07-31
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ETSI TR 102 949
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ETSI TS 103 256
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ETSI TR 102 505
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ETSI TS 103 558
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ETSI TS 103 281
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ETSI TS 103 106
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