Home system
===========================================
------------------------------------------- File name: ppp-isp (run as root)
#!/bin/sh

if [ $1 ]; then
	PPPFILE=/home/mylogin/bin/.ppp_isp$1
	[ -f $PPPFILE ] ||  (echo "$PPPFILE missing" >/dev/console;exit 0)
	$CALL="`awk "/ATDT/{print $7}" $PPPFILE`"
echo '\n'$CALL $PPPFILE
	/usr/sbin/pppd connect "/usr/sbin/chat -v -f $PPPFILE" defaultroute 57600 /dev/ttyS1 &
	echo PPP to $CALL >/dev/console
else
	echo "Usage: ppp-isp [12]"
fi
------------------------------------------- File name: bin/.ppp_isp1
ABORT BUSY ABORT 'NO CARRIER' '' ATDT1-650-2XX-XXXX
ogin itsme
assword mypasswd
dialinux bin/ppp

dialinux is server's host id.
------------------------------------------- Network test: netstat -nr
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
204.xxx.xx.yy   0.0.0.0         255.255.255.255 UH      552 0          0 ppp0
10.0.0.0        0.0.0.0         255.0.0.0       U      1500 0          0 eth0
127.0.0.0       0.0.0.0         255.0.0.0       U      3584 0          0 lo
0.0.0.0         204.xxx.xx.yy   0.0.0.0         UG      552 0          0 ppp0

------------------------------------------- flie: /etc/hosts
127.0.0.1       localhost
10.1.1.5        home   home.corp.com
204.xxx.xx.yz   ns     ns.corp.com
204.xxx.xx.yu   ppp-1   ppp-1.corp.com

-------------------------------------------
line in .fvwmrc 
Exec    "PPP corp -1"           exec /home/itsme/bin/ppp-isp 1 &


===========================================
	Server side
------------------------------------------- file /etc/ppp/options.ttyS0
dialinux:ppp-1

"dialinux" is hostname of the server and ppp-1 is the name of the ppp
connection so that the calling system has a hostname ppp-1 on local
network. Easy for tracking log files.
If you have more than one dial-in line then create similar options.ttyS#

------------------------------------------- script /home/raffi/bin/ppp
#!/bin/sh
exec /usr/sbin/pppd -detach

starts automatically after the login/authentication.

You could setup a special account with /usr/sbin/pppd as a login shell but
I don't like that because sometimes I want to login to the same account
without ppp.

Modem in the office is external USR 28.8 with LEDs while the modem at home
is Zoom, internal without LEDs.