To make the router autodial (any modem):
To revert the changes made:
Restore factory defaults of the modem.....there may be a button on the modem.....or read the manual.
Schedule router disconnect and dial in Linux and Windows:
I recommend you to leave the modem in bridged mode and use a software dialer to connect. I had some troubles when using the scripts from the above link. Sometimes after running the script, the modem failed to work. But it was OK after reseting the modem and leaving it OFF for a few hours.