1)   Phone Tone Decoder 1.5 PhoneTone Decoder can decode the DTMF touch key, FSK Caller-ID, Baudot TTY Code, or any custom phone tone from the PCM wave file or wave stream. It can also detect silence, ring-back, busy or other phone tone. It has the high efficient FFT module. 2)   TAPIEx ActiveX Control 3.2 Telephony development Control, Extensition of Microsoft TAPI2.0,support multi-lines, help you build you IVR,CTI system. Features:TTS, SR, Conference,Transfer, Caller ID, Digital Record/ Playback, Detect DTMF, DTMF and so on. 3)   VTapi ActiveX 1.9 VTapi ActiveX Control you get everything you need for quality communications using Microsoft Visual Basic, Visual C++, or any other environment capable of hosting ActiveX components. Create IVR systems, answering machines, detect caller ID and more! 4)   DTMFDial 1.0.0.14 Emits DTMF tones including A, B, C and D using PC sound card. Features programmable memory, last 16 number redial and single instance tool-tray operation.