How to configure Cisco 887va Router using PTCL home Charji router

This is my first time on this forum, wanted assistance, im trying to configure Cisco 887va router using the few parameters I got from the PTCL Charji router. configuration listed below:

ip dhcp pool 1-pool
lease 3
ip name-server
ip name-server

interface vlan 1
ip address
ip nat inside
ip virtual-reassembly
hold-queue 100 out

interface ATM0
no ip address
no atm ilmi-keepalive

interface ATM0.1 point-to-point
no snmp trap link-status
pvc 8/81
encapsulation aal5mux ppp dialer
dialer pool-member 1

interface Dialer1
ip address negotiated
ip virtual-reassembly
encapsulation ppp
dialer pool 1
ppp authentication chap callin
ppp chap hostname XXXXXXXXXXXXXXX
ppp chap password XXXXXXXXXXXXXXX
ip nat outside

ip route Dialer1

ip nat inside source list 2 interface d1 overload

access-list 2 permit

I tried every thing not working please need help.