The WiNRADiO Universal FSK Decoder is an extremely versatile signal decoding utility for WiNRADiO receivers 1000/1500 or 3000 series, as well as G3 series. Using WiNRADiO models with in-built DSP (for example WR-G313i) will provide the best decoding quality; however, the Decoder will also work well with a sound card. An FSK receive modem is used to decode FSK audio, stored in a wave file. This is good way to evaluate performance with audio recorded from other models of modem, and with real world problematic telephone lines.
SPIRIT's implementation of CallerID contains complete DTMF message decoders and message genera-tors that acquire data in common data-link format and converts them into DTMF digits internally.