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?

score 1 · Accepted Answer · answered Jun 03 '13 at 15:55

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.

answered Jun 03 '13 at 15:55

Reinderien

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I'm getting an error saying that `There is no connection for this connection ID (Exception from HRESULT: 0x80040004 (OLE_E_NOCONNECTION))` – ahmadali shafiee Jun 03 '13 at 16:13
For this to be diagnosed you'll have to post your code and probably a stack trace. – Reinderien Jun 03 '13 at 16:24
Which link? What compiler did you use? And when you debug it, give the stack trace to where the error is generated. – Reinderien Jun 03 '13 at 17:27
The first link actually. But I get another error whit the second one. I'm using VS Express 12 – ahmadali shafiee Jun 03 '13 at 17:45
> TapiSample.exe!TapiSample.Form1.button1_Click(object sender = {Text = "Use Line"}, System.EventArgs e = {X = 56 Y = 14 Button = Left}) Line 47 + 0x34 bytes C# – ahmadali shafiee Jun 03 '13 at 19:41
and the exception is in line `cn = tapi.RegisterCallNotifications(line, true, true, TAPI3Lib.TapiConstants.TAPIMEDIATYPE_AUDIO, 2);` – ahmadali shafiee Jun 03 '13 at 19:43
Isn't there any documentation for this library? – ahmadali shafiee Jun 03 '13 at 19:44

score 1 · Answer 2 · answered May 12 '14 at 15:05

"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

How to record phone call via DialUp modem

2 Answers2