7.4.6 Hand-held hands-free UE receiving

7.4.4 Desktop hands-free UE receiving

7.4.2 Handset and headset UE receiving

7.4.0 General

7.4.1 Handset and headset UE sending

7.3 Idle channel noise (handset, headset UE, and electrical interface UE)

7.1 Applicability

7.2 Overall loss/loudness ratings

6.13 Clock accuracy

6.12 Echo control characteristics