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How to dial a phone number from your VB app

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Declare Function tapiRequestMakeCall Lib "tapi32.dll" (ByVal stNumber As String, _
    ByVal stDummy1 As String, ByVal stDummy2 As String, ByVal stDummy3 As String) As Long

'Following function receives a phone number to dial.
Function DialNumber(PhoneNumber)
    Dim Msg As String
    Dim RetVal As Long

    ' Send the telephone number to the modem.
    RetVal = tapiRequestMakeCall(PhoneNumber, "", "", "")
    If RetVal < 0 Then
        Msg = "Unable to dial number " & PhoneNumber
    End If
End Function

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