The code below uses the API's ExtCreateBroadcast function to generate a broadcast. The broadcast uses audio from a previous broadcast by putting the broadcast's ID in the MessageID variable (IN_MessageID = "442499").

Visual Basic - ExtCreateBroadcast.vb

Partial Class SendBroadcast

    Inherits System.Web.UI.Page

    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click

        ' Use this for Production
        ' Dim urlstring As String = "http://API.call-em-all.com/Webservices/CEAAPI_v2.asmx"

        ' Use this for Testing
        Dim urlstring As String = "http://staging-API.call-em-all.com/Webservices/CEAAPI_v2.asmx"

        Dim IN_BroadcastName As String = "My Broadcast Name"
        Dim IN_CallerID As String = "9725551212"
        Dim IN_MessageID As String = "442499"
        Dim IN_Username As String = "99919991"
        Dim IN_Pin As String = "9991"
        Dim IN_PhoneNumbers As String = "9728411313,8005551212"

        Dim p As com.call_em_all.api.CEAAPI_v2 = New com.call_em_all.api.CEAAPI_v2
        p.Url = urlstring

        Dim R As com.call_em_all.api.ExtCreateBroadcastRequestType = New com.call_em_all.api.ExtCreateBroadcastRequestType
        Dim A As com.call_em_all.api.ExtCreateBroadcastResponseType = New com.call_em_all.api.ExtCreateBroadcastResponseType


        R.broadcastType = 1                 ' 1=Announcement; 2=Survey
        R.checkCallingWindow = 0            ' Default=1; 0=Bypass calling window check; 1=Enforce calling window check;

        R.broadcastName = IN_BroadcastName
        R.callerID = IN_CallerID
        R.messageID = IN_MessageID
        R.username = IN_Username
        R.pin = IN_Pin

        R.phoneNumberSource = 3             ' 1=List; 2=CSV; 3=CommaDelimitedPhoneNumbers;

        R.commaDelimitedPhoneNumbers = IN_PhoneNumbers

        ' ============================================
        ' R.launchDateTime = "12/25/2014 08:00:00 AM"  
        ' ============================================
        ' Default=current date and time; 
        ' The date and time to launch the broadcast in 
        ' MM/DD/YYYY HH:MM AM/PM format

        A = p.ExtCreateBroadcast(R)


        If A.errorCode <> 0 Then

            Response.Write("The error was : " + A.errorMessage.ToString)

        Else
            Response.Write("Success")

            ' Data Available after successfull call
            ' =====================================
            ' A.broadcastID - The created broadcastID (can be used later to pull results)
            ' A.badRecordCountOnFile - Results of the import of phonenumbers types 2,3
            ' A.duplicateRecrodCountOnFile - Any duplicate numbers
            ' A.goodRecordCountOnFile - Total good records
            ' A.tollFreeNumber - If you do not specify a messageID, call this number to record message
            ' A.messageRecordingID - use this recording ID when you call to record
        End If

    End Sub
End Class