Dialgo Tapi DLL does the functions like - Make and answer phone calls, Detect tone and pulse digit from the phone line, Capture Caller ID,

Support blind transfer, Single Step transfer / conference, consultation transfer/conference, hold, unhold, Control of the local phone handset, microphone and speaker of the modem, Send and receive faxes, Play and record on the phone line or sound card, Play music in background mode, Silence detection.