ToneDecoder ActiveX Control

ToneDecoder Control can decode the DTMF touch key, FSK Caller-ID, Baudot TTY Code, or any custom phone tone from the audio file or wave stream.

It can also detect silence, ring-back, busy or other phone tone.
ToneDecoder is the ActiveX Control, and it works with most Windows software development environments. With development tools like Visual C#, Visual Basic.NET, Visual Basic, Visual foxpro, Delphi, C Builder, Access ,Visual C and others that support ActiveX