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7   Narrowband telephony transmission performance test methods [R3]      Up
7.1   Applicability
7.2   Overall loss/loudness ratings
7.3   Idle channel noise (handset and headset UE)
7.4   Sensitivity/frequency characteristics   PDF-p. 37
7.5   Sidetone characteristics   PDF-p. 39
7.6   Stability loss      Up
7.7   Acoustic echo control   PDF-p. 41
7.8   Distortion
7.9   Void
7.10   Delay [R11]   PDF-p. 45
7.11   Echo control characteristics [R11]
7.12   Quality (speech quality, noise intrusiveness) in the presence of ambient noise [R11]
7.13   Jitter buffer management behaviour [R14]   PDF-p. 57

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