known as M/A-COM). Software Software for system managers and radio monitors alike has been developed outside of the vendor. ETrunker is a modification to the Trunker code to work on the EDACS control channel. Users of the software can monitor and log complete system activity. See the Trunker Site for more info. ProVoice ProVoice is Tyco Electronics' (formerly M/A-COM, Ericsson and GE) implementation of IMBE digital modulation for radio communications. It is not APCO-25 compliant, but does use the same IMBE vocoder developed by Digital Voice Systems, Inc. (DVSI). The technical difference between ProVoice and the APCO Project-25 standard is how error correction and modulation is provided to transmit the data. References External links EDACS Explained Florida Statewide Law Enforcement Radio System (SLERS) Harris Corporation website Trunked radio systems Speech codecs