isdn switch-type basic-ni
!
interface Ethernet0
ip address 192.168.0.1 255.255.255.248
!
interface BRI0
ip address 172.22.86.2 255.255.255.0
encapsulation ppp
dialer map ip 172.22.86.1 name R3 6663000
dialer-group 1
isdn switch-type basic-5ess
ppp authentication chap
!
ip classless
ip route 0.0.0.0 0.0.0.0 172.22.86.1
!
dialer-list 1 protocol ip permit