5.11 Sending performance in the presence of ambient noise

5.13 Echo control characteristics

5.12 Delay

5.10 Information on other parameters (not normative)

5.7 Echo Control

5.8 Distortion

5.9 Void

5.4.5 Hand-held hands-free UE sending

5.6 Stability loss

5.5 Sidetone characteristics (handset, headset, and analogue electrical interface UE)