1) /etc/ppp/ppp-up:
[must be executable]

localip=0.0.0.0
remoteip=
device=/dev/ircomm0
pppflags="9600 modem defaultroute"
/usr/sbin/pppd lock connect \
'/usr/sbin/chat -v -f /etc/ppp/ppp.chat' \
$device $pppflags $localip:$remoteip

2) /etc/ppp/ppp-down:
[must be executable]

if [ "$1" = "" ]; then
	DEVICE=ppp0
else
	DEVICE=$1
fi
if [ -r /var/run/$DEVICE.pid ]; then
	kill -INT `cat /var/run/$DEVICE.pid`
	if [ ! "$?" = "0" ]; then
		rm -f /var/run/$DEVICE.pid
		echo "ERROR: Removed stale pid file"
		exit 1
	fi
	echo "PPP link to $DEVICE terminated."
	exit 0
fi
echo "ERROR: PPP link is not active on $DEVICE"
exit 1

3) /etc/ppp/ppp.chat:
[replace "0123456789" with your ISP's phone number,
you must not have empty lines in this file]

TIMEOUT 60 
ABORT "NO CARRIER"
ABORT BUSY
ABORT "NO DIALTONE"
ABORT ERROR
"" \d\dATZE0 
OK ATD0123456789
CONNECT ""

4) /etc/ppp/options:
[replace "groucho" with the login needed for your ISP,
we are using pap authentification here]

crtscts
user groucho
-chap
ipcp-accept-local
ipcp-accept-remote
noipdefault
-vj
-vjccomp
-ac
-pc
-bsdcomp

5) /etc/ppp/pap-secrets
[replace "groucho" with the login needed for your ISP,
replace "yadayada" with the password needed for your ISP,

groucho * yadayada *