ITU-T P.382 PDF

This Recommendation specifies electrical requirements and test methods for a multi-microphone headset/headphone interface used in digital mobile terminals.

The principle of this recommendation is to ensure adequate compatibility between the digital mobile terminal and the universal and multi-microphone wired analogue headset/headphone, and to have better user experience. The universality of the multi-microphone headset/headphone interface will facilitate the separation of sales between digital mobile terminals and headsets/headphones. One of the benefits is that users are free to choose their favourite type of headset or headphone in the market. In the long run, it will reduce E-waste.

Furthermore, the universal interface can be used as the electric coupling design in hands-free systems and hearing aids for wider harmonization.

To give specifications to manufacturers and encourage them to adopt the universal headset interface, the mechanical dimensions are shown in an Appendix for at least configurations with five poles.

This Recommendation applies to digital mobile terminals with physical analogue audio output/input interface that need to support headsets with >1 microphone. Other similar ICT equipment may also refer to this Recommendation.

This Recommendation does not apply to terminals designed solely for digital headset/headphone usage.