Practical methods for measuring the transmission characteristics of telephone handset or headset by means of using a test connection to obtain objective measurements are provided. The obtained test results may be used as a means of evaluating or specifying the transmission performance of a handset or headset on a standardized basis.

This standard covers handsets and headsets whose receive performance can be measured using standardized artificial ears, as defined in ITUT Recommendation P.57: 1993 and ANSI S3.36-1985. The standard also covers handsets and headsets whose transmit performance can be measured with the center of the transmitter sound port in front of the artificial mouth lip plane. Other types of handsets or headsets, having transmitters whose sound ports fall behind the lip plane in normal use, are not covered by this standard. However, the general methods described in this standard may be used as guidelines for testing such handsets or headsets. This standard covers measure...

This standard describes practical methods for measuring the transmission characteristics of a telephone handset or headset by means of using a test connection to obtain objective measurements. Although the various methods generally produce similar results, some deviations can be expected depending on handset or headset characteristics. Measurement conditions should be noted when reporting results. The obtained test results may be used as a means of evaluating or specifying the transmission performance of a handset or headset on a standardized basis. This standard is intended for measuring the transmission performance over the frequency range most useful for ...