EDACS Provoice

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ProVoice is MA/Com's (formerly Ericsson) implementation of IMBE digital modulation for radio communications. It is not APCO-25 compliant, but does use the same IMBE vocoder developed by DVSI Inc. The technical difference between ProVoice and the APCO Project-25 standard is how error correction and modulation is provided to transmit the data.