How to record phone call via DialUp modem

Question

I've tried this program and It's compatible with each dial up modems connected to my laptop and I think it's using a windows API or a public API because the other programs I saw were only compatible with serial port modems but It's working with my USB modem

Is there any compatible library in C# to record calls?

Answer 1

Try these:

http://code.msdn.microsoft.com/windowsdesktop/TAPI-3-in-C-Get-Lines-and-dd143eaf

http://www.codeproject.com/Articles/10994/TAPI-3-0-Application-development-using-C-NET

The Telephony API is right from Windows, so it might be pretty low-level, but should support what you need.

Answer 2

"I'm getting an error saying that There is no connection for this connection ID (Exception from HRESULT: 0x80040004 (OLE_E_NOCONNECTION))"

Most probably your modem is not full duplex voice modem. This error was also happening on my PC as well and was removed by changing Modem