Hi Mohammed,
Looking thru the logs & configs it appears that the ppp process does not start, also w have the router configured for ppp call back.
We have the following:
interface Group-Async1
async mode interactive
group-range 129 136 <<< add this command
Under the line "autoselect ppp" is missing.
line 129 136
autoselect ppp <<<< add this command
Thanks,
Mak