ETSI EG 201 377-2 V1.2.1 (2005-03)
ETSI EG 201 377-2 V1.2.1 (2005-03)ETSI Guide
Speech Processing, Transmission and Quality Aspects (STQ);
Specification and measurement of
speech transmission quality;
Part 2: Mouth-to-ear speech transmission
quality including terminals
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