Bug#28220: marked as done (Missing isdn - devices /dev/ttyIn .)
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Date: Mon, 19 Oct 1998 23:05:55 +0200
Subject: Missing isdn - devices /dev/ttyIn .
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I have a Debian 2.0 system here, on a i386 - box, installed
from scratch from the set of CDs distributed by the German
I have found that the devices /dev/ttyI0 ... /dev/ttyI63 are
missing. These devices are required by the ISDN kernel
While not so popular in the US (as far as I know), many
German Linux users certainly use isdn terminal adapter
plugin cards (rather than modems) to connect their boxes to
the internet (or computer buletin boards, or what have you).
It is a major nusiance for many such users to not have these
devices. Unfortunately, not everybody knows how to use
Besides /dev/ttyIx, some other isdn - related devices are
missing as well.
For a fix, do something like:
while [ $i -lt 64 ]
mknod /dev/ttyI$i c 43 $i
# - ??? maybe /dev/ttyI$i is better:
# mknod /dev/cui$i c 44 $i
mknod /dev/isdn$i c 45 $i
mknod /dev/isdnctrl$i c 45 `expr $i + 64`
mknod /dev/ippp$i c 45 `expr $i + 128`
i=`expr $i + 1`
mknod /dev/isdninfo 45 255
You will also want do something sensible chmod - wise, e.g.
chown root.dialout /dev/ttyI* /dev/cui* /dev/isdn* /dev/ippp*
chmod ug+rw,o-rw,a-x /dev/ttyI* /dev/cui* /dev/isdn* /dev/ippp*
For additional information, see the files from any recent
Linux - Kernel:
(explains devices ttyIx, cuix, isdnctrlx, isdninfo)
(explains devices /dev/ipppx)
I have those files from a Linux kernel 2.0.35 I recently
grabbed some time ago. I believe they have not changed in a