Question : T1 failover connection

I have a T1 running right now.  We want to have a cable connection coming in as well to bond to the T1.  As far as I know there shouldn't be any issues with outbound traffic.  My concern is how do I handle inbound traffic if the T1 goes down?  I'd need something to tell inbound traffic like email to use my second connection.  Anyone have any experience with this or any ideas on how I can get this to work?

Answer : T1 failover connection

If it's absolutely essential that you keep your services up and running in the event of a failure, BGP is the best way to go.  You'll need to apply for an AS number with ARIN and order another T1 (or other type of connection with static IP) from another distinct provider.  It's a lengthy process, but if uptime is a must, it's the best way.