Installation instructions:

1. Log in as root.

2. Put all three packages in some directory.
   (For example:  /root/conf-isdn)

3. Start the Corel File Manager and double-click on every package in turn to install it.

   The installation order should be:

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

   Of course you can also install everything using a terminal window by entering the following commands:

   1. cd /root/conf-isdn
   2. dpkg -i isndutils_3.0-12slink14.deb  (Note:  Do not start isdnconfig)
   3. dpkg -i dialog_0.9a-15.deb
   4. dpkg -i conf-isdn-account_1.6-1_all.deb

4. Run in a terminal window 'update-menus -v'
   You can ignore the error message from the twm menu-methods script.

After installing all three packages in the correct order and updating the menus,  you will find the configuration tool in Corel's Application Starter under:

You can also start the tool from within the shell by entering the command  conf-isdn-account.