Installation instructions:

1. Log in as root.

2. Install everything from the shell-prompt by entering the following commands :

   1. dpkg -i isdnutils_3.0-12slink14.deb  (Note:  Do not start isdnconfig)
   2. dpkg -i dialog_0.9a-15.deb
   3. dpkg -i conf-isdn-account_1.6-1_all.deb

3. Start from the shell-prompt  'update-menus -v'.

After installing all three packages in the correct order,  you can start the tool from the shell-prompt by entering the command  conf-isdn-account.