CapiSuite is an ISDN telecommunication suite providing easy to use telecommunication functions which can be controlled from Python scripts.
It uses a CAPI-compatible driver for accessing the ISDN-hardware, so you'll need an AVM card with the according driver.
CapiSuite is distributed with two example scripts for call incoming handling and fax sending. See /usr/share/doc/packages capisuite for further information.
This is a patched edition to work as Faxgate-Server.