Gisdnbutton is a GTK-based ISDN monitor inspired
by the old isdnbutton program written in 1996 by
M. Gutschke. Gisdnbutton monitors the state of an
ISDN connection (down, pending, incoming or
outgoing) and displays it as a traffic light. The
state of the connection may be changed by clicking
the traffic light icon. Unlike isdnbutton,
Gisdnbutton monitors both /proc/net/route and
/dev/isdninfo, allowing for more detailed
information about the different states.
Gisdnbutton also distinguishes between incoming
(blue) and outgoing (green) connections, can be
started from the DisplayManager*setup: script (for
gdm, kdm or xdm) instead of running as suid root,
and can monitor a subrange of ippp devices, hence
allowing the use of more than one process with
each monitoring its own uplink.