Voice communication between a portable communication apparatus and an external terminal

摘要

A portable communication apparatus ( 200 ) for radio communication of digital audio data ( 240 ) representing analog voice signals has an asynchronous interface ( 250 ) for exchanging digital non-audio data ( 242, 244 ) with an external terminal ( 300 ). The apparatus ( 200 ) is adapted to exchange asynchronously the digital audio data ( 240 ) with the external terminal ( 300 ) over the asynchronous interface ( 250 ).