I question ATT's ability to close COs and eliminate bulky class 4 and 5 switches anytime soon. Most SMB IP services aren't delivered natively, but rather via AT&T's legacy TDM network, like 6MB Ethernet on 4x T1 circuits. Lots of wire is needed to backhaul these services (8 pairs for the above), and moving circuit cards closer to the customer seems like it would be a step in the wrong direction. There will be a need for DS1-based network support until these customers in particular can be moved to Ethernet via fiber, or some other modern delivery platform.