$ sudo apt-get update
$ sudo apt-get install isdnactivecards 

isdnactivecards is installed in your system.

Make ensure the isdnactivecards package were installed using the commands given below,

$ sudo dpkg-query -l | grep isdnactivecards *

You will get with isdnactivecards package name, version, architecture and description in a table

isdnactivecards package basic information: