We (SWS Development) have created a component to add a drag-and-drop item to your VAD toolbox in the Voice Application Designer that will let you call the command prompt from an IVR and are giving it away for free for already licensed VAD users.
http://www.utahvoipstore.com/Products/127-vadtools-for-the-3cx-vad-call-a-command-line-from-the-ivr.aspx
Use "Purchase Order" for the payment option and you'll skip having to put in payment details to download it.

