摘要 |
<p>A mobile communication system includes a sender terminal (10) configured to input PTT (Push to Talk) voice data, a PTT server (20) configured to convert the PTT voice data into VMS (Voice Mail System) formatted voice data, and a VMS server (50) configured to receive the VMS formatted voice data from the PTT server and to transmit the VMS formatted voice data to receiver terminals (60).
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