In a communication recording system using a headset with a radio
communication function which transmits the first speech signal and
receives the second speech signal by radio communications, the headset is
provided with a time information acquisition unit for acquiring a time
information indicating occurrence times of the first speech signal and
the second speech signal, an information production unit for producing a
recording information to be stored in which the time information is set
in correspondence to the first speech signal and the second speech
signal, and a memory unit for storing the recording information.