The DSS file extension is related to the Digital Soup voice codec. The *.dss file stores sound data.
DSS file extension - Digital Soup sound file
What is dss file? How to open dss files?
File type specification:
The DSS file extension is used for audio files sed by Digital Soup voices codecs in SuperPhone technology. Souperphone is made possible by Voice over Internet Protocol (also called VoIP, IP Telephony, Internet Telephony, and Digital Phone) technology.