Analysis of information sources in references of the Wikipedia article "Softmodem" in English language version.
AuDSL is an experimental software modem for low-speed Internet connectivity over leased copper lines using PC sound cards as the line interface. The acronym AuDSL stands for Audio Digital Subscriber Line.
It acts a general-purpose software FSK modem, and includes support for various standard FSK protocols such as Bell103, Bell202, RTTY, TTY/TDD, NOAA SAME, and Caller-ID.