CONFIG_HYSDN
  Say Y here if you have one of Hypercope's active PCI ISDN cards
  Champ, Ergo and Metro. You will then get a module called hysdn.o.
  Please read the file <file:Documentation/isdn/README.hysdn> for more
  information.

CONFIG_HYSDN_CAPI
  Say Y here if you like to use Hypercope's CAPI 2.0 interface.