1 Overview
2 Normative references
3 Definitions
4 Test equipment and setup
5 Calibration
6 Test procedure for analog sets
7 Test procedures for digital and 4-wire systems
8 Test procedures for Analog 4-wire handsets and
  headsets
Annex A (normative) - Ear simulators with flexible
                        pinnas and positioning devices
Annex B (normative) - Alternative ear simulators,
                        mouth simulator, and test
                        fixture
Annex C (normative) - DRP to ERP and related
                        translations
Annex D (normative) - Hoth room noise
Annex E (normative) - Test signals
Annex F (normative) - Levels
Annex G (normative) - Analysis methods
Annex H (normative) - Loudness rating calculations
Annex I (normative) - Linearity
Annex J (normative) - Receive level, conversational gain,
                        and frequency response metrics
Annex K (normative) - Linearity
Annex L (normative) - Distortion
Annex M (normative) - Send ambient noise reduction and its
                        effects on speech quality
Annex N (normative) - Delay
Annex O (normative) - Sidetone echo
Annex P (normative) - Maximum acoustic output (long duration)
                        - alternate method
Annex Q (normative) - Temporally weighted terminal coupling
                        loss measurement
Annex R (normative) - Temporally weighted terminal coupling
                        loss algorithm
Annex S (normative) - Simulated speech generator
Annex T (normative) - TDS sweep with P.50 noise burst
Annex U (normative) - Conditioning for carbon transmitters
Annex V (normative) - Measurements on telephones with amplified
                        receivers
Annex W (informative) - Useful conversion procedures
Annex X (informative) - Perceptual evaluation of speech quality
                        (PESQ)
Annex Y (informative) - Loudness balance subjective test
                        procedures