Need Help and Advise...!!! I'm developing a telephony software to handle DTMF signals from the caller on Windows "95 platform using VB4. The problem is that I don't know how to use the TAPI functions and how to declare it in the modules ,how to send the TAPI Functions / Commands to the modem so that the Modem can receive the DTMF signals. I have tried the MSCOMM OCX Control of the VB4 but it doesn't detect the signal as a receive OnComm signal. I am still very new to the telecommunication programming. I would really appreciate and very much thankfull if anyone could help me in detail on how to go about these things.