Как делать чтобы компьютер звонил через городские линии по номерам из справочника - VB

Private Declare Function tapiRequestMakeCall Lib "TAPI32.DLL" (ByVal Dest As String, ByVal AppName As String, ByVal CalledParty As String, ByVal Comment As String) As Long
Private Sub PhoneCall(sNumber As String, sName As String)
    Dim lRetVal As Long
    lRetVal = tapiRequestMakeCall(Trim$(sNumber), App.Title, Trim$(sName), "")
    If lRetVal <> 0 Then
        'Couldn't make the call.
        'Take appropriate action
    End If
End Sub
Private Sub Form_Load()
    PhoneCall "123456", "TheName"
End Sub