Isdn Backup Connection

[mikes8888]

I have a Cisco 886, IOS ver 12.4(22)

I need to configure this router, every time the ADSL connection goes down,
to automatically connect to the Internet (No Site-to-Site VPN connection) through the ISDN interface.
Is it possible?

Thank you in advance.

[tprendergast]

Yes, this is possible.

There's a good article here discussing it:

http://www.netcraftsmen.net/resources/archived-articles/524-designing-default-and-dial-backup.html

You want to look for DDR (dial on-demand routing) or dial backup features of Cisco devices.