I'm not sure what you're asking. The Panasonic TVA series is a Voice Mail system that has a visual setup for IVR functions. It has a comprehensive manual (at least for Pana) that shows you how to interface it to various systems and after that, its a matter of trial and error :-)

The trick to testing is that if you're calling into it for testing from an extension, it can't be one that has a voice mail box. Then the system knows you are an internal user and won't play the menus.

Carl