Normally, to retrieve call audio recordings from TIM Enterprise, an authenticated web user must log in to the web interface, navigate to the desired call using the Live Call View or by running a report, click on the call, then play it using the built-in web-based call player.

It is also possible to programmatically retrieve call recordings using a two-step authenticated request process. This works in the following way:-

• Obtain the call's datasource, voicelocation and voicefilename properties from the calls table in the TIM Enterprise database
• Request a security token from TIM Enterprise by authenticating using an authorised web user's login credentials
• Request the call from the RTA Service using the security token obtained above
• Receive the call audio in WAV format, forcibly obfuscated if any such events apply to the requested call

The following page shows some example code to retrieve a voice recording from TIM Enterprise.

C# Example Source

This is a very simple example of some C# code to request a call's voice recording from TIM Enterprise. A better example would allow you to pass parameters in the class's constructor, for example, but this should demonstrate the procedure.

Use the following code to request a security token from TIM Enterprise, plugging in the appropriate values for _datasource, _voicefilename, and _voicelocation for the call you want to retrieve. These values are obtained directly from the calls database table.

A security token in this context is a URL which is used to obtain the actual voice recording from the RTA Service.

using System;
using System.Net;
using System.Text;
 
private class GetAudioFile
{
    String _datasource = "\\3\\";
    String _voicefilename = "NCS00000000EA39883596CC41E799B4630006CF2D56";
    String _voicelocation = "4";
 
    using (WebClient client = new WebClient())
    {
        client.Headers["User-Agent"] = "3rd-Party-Agent";
        client.Credentials = new NetworkCredential("username", "password");
 
        byte[] responseBody = client.DownloadData("http://enterprise.example.com/voice.wav?cmd=getvmsg&datasource=" + System.Uri.EscapeDataString(_datasource) + 
                              "recordingid=" + System.Uri.EscapeDataString(_voicefilename) +
                              "voicelocation=" + System.Uri.EscapeDataString(_voicelocation) + 
                              "salt=" + System.DateTime.Now.Ticks);
 
        String RTAURL = Encoding.UTF8.GetString(responseBody);
    }
}

Assuming the request was successful (and the response status was a 200 OK), the variable RTAURL will now contain a full URL which you must request in a similar way, using a WebClient object.

The security token URL is valid for one minute (60 seconds).

Again using a System.Net.WebClient object, request the voice file directly from the RTA Service.