Hi Alex!
I'm using Pipex and this config works for me... Obviously there are more parameters for the interfaces but not relevant to your question like ip address assignment on the dialer interface
---------------------------------------------------------------- interface ATM0 no ip address no atm ilmi-keepalive atm vc-per-vp 64 dsl operating-mode auto pvc 0/38 encapsulation aal5mux ppp dialer dialer pool-member 1
interface Dialer 1 encapsulation ppp dialer pool 1 dialer-group 1 ppp authentication chap pap callin ppp chap hostname (isp_username) ppp chap password (isp_password) ppp pap sent-username (isp_username) password
-------------------------------------------------------------------
Rob