1 Scope
2 Normative references
3 Definitions and abbreviations
4 Sending characteristics
4.1 Loudness rating
4.2 Sensitivity/frequency
characteristics
4.3 Noise
4.4 Distortion
4.5 Discrimination against
out-of-band input signals
5 Receiving characteristics
5.1 Loudness rating
5.2 Sensitivity/frequency
characteristics
5.3 Noise
5.4 Distortion
5.5 Spurious out-of-band
receiving signals
6 Sidetone characteristics
6.1 Talker sidetone
6.2 Sidetone distortion
7 Echo path loss characteristics
7.1 Weighted terminal
coupling loss
7.2 Stability loss
8 Delay
Annex A –
Objective measurement methods for wideband handset telephones
A.1 Introduction
A.2 Electrical interface
specifications
A.3 Electro-acoustic
measurement considerations
A.4 Sending measurements
A.5 Receiving measurements
A.6 Sidetone measurements
A.7 Echo path loss
measurements
A.8 Delay measurements