ProVoice
From The RadioReference Wiki
ProVoice is MA/Com's (formerly Ericsson) implementation of IMBE digital modulation. 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.
El Pase and San Antonio, Texas, the State of Florida, and St Tammany Parish, Louisiana, are using ProVoice EDACS or are in the process of building ProVoice systems.
EDACS ProVoice systems use the MA/Co EDACS control channel.
There is no scanner available today that can monitor EDACS ProVoice Digital voice.