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<H2><A NAME="s8">8. ISDN</A></H2>
<P>
<P>I am including this although this has nothing to do with qmail or
mh. But without a PPP line to your ISP there is no email at all. I had
quite a bit of bother to get my ISDN working. The SusE distribution
includes a configuration for ISDN, but I wanted something simpler. The
stuff here was adapted from Bernhard Hailer's scripts. (Vielen, vielen
dank!)
<P>The following rc.config loads the necessary modules during
initialisation:
<P>
<BLOCKQUOTE><CODE>
<PRE>
#!/bin/bash
# This is adapted Bernhard Hailer's old script
LOCAL_NUMBER="91311234" # tel no. 091311234
REMOTE_NUMBER="0911123456" # ISP tel no.
LOCAL_IP="192.168.0.99" # I have dynamic IP so this will do
REMOTE_IP="195.112.123.11" # your ISP's gateway
DEVICE="ippp0"
SYSPATH="/sbin"
ISDNCTRL="$SYSPATH/isdnctrl"
case "$1" in
start)
# turn on isdn
insmod /lib/modules/2.0.33/net/slhc.o
insmod /lib/modules/2.0.33/misc/isdn.o
sleep 1
# load the hisax module
insmod /lib/modules/2.0.33/misc/hisax.o
id=Tel0 type=5 protocol=2 irq=10 io=0x300
echo "starting isdn4linux"
# global
$ISDNCTRL verbose 0
$ISDNCTRL addif $DEVICE # create new interface
$ISDNCTRL addphone $DEVICE in $REMOTE_NUMBER
$ISDNCTRL addphone $DEVICE out $REMOTE_NUMBER
$ISDNCTRL eaz $DEVICE $LOCAL_NUMBER
$ISDNCTRL l2_prot $DEVICE hdlc
$ISDNCTRL l3_prot $DEVICE trans
$ISDNCTRL encap $DEVICE syncppp
$ISDNCTRL huptimeout $DEVICE 300
$ISDNCTRL chargehup $DEVICE off
$ISDNCTRL secure $DEVICE on
$SYSPATH/ifconfig $DEVICE $LOCAL_IP pointopoint $REMOTE_IP metric 1
$SYSPATH/route add default $DEVICE
$SYSPATH/ipppd /dev/ippp0 file /etc/ppp/options.ipppd &
$SYSPATH/route del default
;;
stop)
#turn off isdn
rmmod hisax.o
sleep 1
rmmod isdn.o
rmmod slhc.o
echo "Shutting down isdn4linux"
$ISDNCTRL delif ippp0
;;
*)
echo "Usage: $0 (start|stop)"
exit 1
;;
esac
</PRE>
</CODE></BLOCKQUOTE>
<P>I use the following script to dial out, it is called simply isdn on|off
<P>
<BLOCKQUOTE><CODE>
<PRE>
#!/bin/bash
# This is based on an old script from Bernhard Hailer
IP_ADDRESS="195.112.123.11"
case "$1" in
on)
echo "Calling ippp0"
/sbin/isdnctrl dial ippp0
# the sleep is important as it gives the PPP time to settle down
echo "Sleep for 8s for PPP handshake"
sleep 8s
/sbin/route add default ippp0
echo "line open - checking...."
# check whether PPP negotiation was successful:
set `ping -qc3 -i1 $IP_ADDRESS 2>/dev/null | grep transmitted`
if [ $4 -gt 0 ];
then
echo "succeeded."
echo "Starting fetchmail daemon"
/usr/bin/fetchmail -d 600 -k -v -a -L /var/log/fetchmail
echo "Flushing mail queue...."
/usr/local/bin/serialmail/maildir2smtp
~alias/pppdir alias-ppp- mail.server.ip.no `hostname`
else
echo "failed!"
/sbin/isdnctrl hangup ippp0
fi
;;
off)
echo -n "Shutting down fetchmail daemon"
/usr/bin/fetchmail --quit
/sbin/isdnctrl hangup ippp0
/sbin/route del default # and delete route
echo "You're off line"
;;
*)
echo -e "\aUsage:"
echo "isdn on"
echo "isdn off"
;;
esac
</PRE>
</CODE></BLOCKQUOTE>
The next lot is the ipppd options file /etc/ppp/options.ipppd
<P>
<BLOCKQUOTE><CODE>
<PRE>
# Based on:
# Klaus Franken, kfr@suse.de
# Version: 27.08.97 (5.1)
#
# This file is copy by YaST from /etc/ppp/ioptions.YaST
# to options.<device>
user "myuserid"
# my system name (only for CHAP!)
# name my_system_name
# accept IP addresses from peer
# use with dynamic IP
ipcp-accept-local
ipcp-accept-remote
noipdefault
# try to get IP address from interface
# option specific to ipppd (as opposed to pppd)
# use only with static IP
#useifip
# disable all header-compression
-vj
-vjccomp
-ac
-pc
-bsdcomp
# sometimes you need this:
#noccp
# max receive unit
mru 1524
# max transmit unit
mtu 1500
# If this machine is a server, force authentication by uncommenting one
# of the following. However, if this machine is a client, doing this will
# prevent a succesful connection! (message "peer refused to authenticate").
# So, only uncomment on a server.
# "+pap" / "+chap" NUR AKTIVIEREN, WENN DIES EIN SERVER IST!!!
#+pap
#+chap
# if you have problems with handshaking (no response for first
# lcp-package) try to decrease the retry-cycle. Default is 3 sec,
# try for example 2 sec:
# lcp-restart 2
</PRE>
</CODE></BLOCKQUOTE>
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