A Recommendation that ensures that sound levels
between various devices are harmonized in order that listening quality is not
degraded was amended at Study Group 12’s January meeting.
The amendment takes into account the
transmission characteristics for headsets and hands free terminals. The
original Recommendation – P.313 - provides audio performance requirements for
portable digital cordless and mobile handsets, headset and loudspeaker
Specifications for car mounted hands free
terminals will be treated in a new Recommendation in progress and also under
study in the Focus Group - From/In/To Cars Communication.