T1 is for our internet access and I am very uneasy to allow for thens of thousands of dollars of critical e-commerce over cable/dsl. I am seriously considering a pair of T1's from different carriers ...

I've never setup one of these before, but a client requires it because their T1 provider made them think they were providing the CSU/DSU but now will not without an $80 per month fee for 'managed ...