TWELP DMR vocoder provides highest speech quality, when a voice is more natural, clear and is free of any synthesizing sounds. 

Can be used in DMR (ETSI TS 102 361)  and dPMR (ETSI TS 102 658) radios as alternative vocoder (instead AMBE+2 vocoder) or as additional vocoder to provide in newest radios main superior mode, providing more high-quality voice communication, keeping simultaneously interoperability with old radios (AMBE+2 based ones).