Hi, thanks.
We are using Unimodem V. I have got a test app at the moment that does not actually give me the tones, but on a port monitor, I can see that the tones are being interpreted by the modem.

I would do my own research, it just so happens it has taken 3 weeks to get this far. TAPI is not walk in the park. I also have problems deciding what modem to get, do U have any recommendations?