So AT&T kept records for 26 years and counting. Information that includes location of caller. I am very happy drug dealers were caught, but 26 years? There is some serious potential for abuse.
It's weird that at&t had to give them that data, unless you assume that up til now they had access to the nsa's copy and now the justice department says they have to have their own.
The article says AT&T has the data for any telco that uses AT&T switches. This is a little odd, given that the company currently known as AT&T is not the same company that used to manufacture switches; but, if this has been going on for 26 years, I suppose the government would have insisted it continue across corporate splits and mergers.
I suspect that current infrastructure is the "AT&T switches" that are relevant here.