this is a CSU/DSU. it takes in one of a few types of physical connectors, and the output is generally ethernet. at least that's how i've seen them. The T1 connector is an RJ-48 isn't it? I think some ...

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 ...