1. ISDN utilities that use X These are the graphical utilities for ISDN, xmonisdn and xisdnload. They provide, each in their own way, a visual indication of the status of the ISDN lines, so that it is directly obvious when there is a connection, for example. This has been separated out of the main isdnutils package so that if you don't run X but do need ISDN, you don't have to include the X libraries unnecessarily. From Debian 3.0r0 APT