Rec. ITU-T P.34 (03/1993) � TRANSMISSION CHARACTERISTICS OF HANDS-FREE TELEPHONES
FOREWORD
CONTENTS
1 Introduction
2 Sending sensitivity
3 Receiving sensitivity
4 Frequency response curves
    4.1 Sending
    4.2 Receiving
5 Switching characteristics
    5.1 Type 1 - Hands-free telephone sets for which switching occurs when an absolute level VTH ...
    5.2 Type 2 - Hands-free telephone sets for which switching depends on the relative levels in both ...
    5.3 Type 3 - Hands-free sets using echo cancellation techniques
6 Conditions of measurement
    6.1 Test table
    6.2 Test arrangements
    6.3 Test environment
    6.4 Subjective determinations
    6.5 Objective evaluations
References