Welcome to CapiSuite, a Python-scriptable ISDN telecommunication suite. It uses the new CAPI interface for accessing your ISDN-hardware - so you'll need a card for which a CAPI compatible driver is available. Currently these are all cards manufactured by AVM and some Eicon cards.
This manual should help you to be able to use CapiSuite as quick as possible. As I hate reading long documentation just as much as you do, let's jump right in.