Kernel (minimum 2.2.10 ISDN patch-el vagy 2.2.14)
menuconfig -] ISDN

ISDN support

[*] support synchronous PPP

[*] Use VJ-compression with synchronous PPP

[*] Support generic MP (RFC 1717)

[*] Support audio via ISDN

[*] Support AT-Fax Class 2 commands

[*] Support isdn diversion services
HiSax SiemensChipSet driver support

[*] HiSax support for EURO/DSS1
.
.

[*] HiSax Support for AVM A1 (Fritz) ;vagy éppen amilyen a gépünkben van
Multilink támogatás (Opcionális) lsd. 6. pontban

[*] Support generic MP (RFC 1717)
minden más ki, kernelforgat.

apt-get install isdnutils (debian-nál)

] isdnctrl addif ippp0 ;ippp0 added
] isdnctrl addphone ippp0 out
] isdnctrl eaz ippp0 ;(MSN = Multiple Subscriber Number) a három telefonszam közül a hasznalni kivánt
] isdnctrl l2_prot ippp0 hdlc
] isdnctrl l3_prot ippp0 trans
] isdnctrl encap ippp0 syncppp
] isdnctrl huptimeout ippp0 600 ;ha nincs forgalom 5 perc (600 másodperc) múlva lebont
] isdnctrl writeconf ;written /etc/isdn/isdn.conf

/etc/resolv.conf -ba: nameserver

Inditó script példa

#!/bin/bash

case $1 in
start) isdnctrl readconf
ipppd /dev/ippp0 defaultroute lock user
;;

stop) killall ipppd
;;

dial) isdnctrl dial ippp0
;;

hangup) isdnctrl hangup ippp0
ifconfig ippp0 down
;;

*) echo „Usage: isdn „
;;

Nekem igy müxik.