"Central Office" is the wrong term for it, but I've worked in a couple switching offices that were built to look just like another house in the tract. They were

"Central Office" is the wrong term for it, but I've worked in a couple switching offices that were built to look just like another house in the tract. They were RSUs (Remote Switch Unit), that trunked everything back to a parent CO. In both cases it was a housing tract that was allergic to ugly buildings or something. The vast majority of RSUs looked like smaller versions of the CO. Gray cinder blocks and asphalt.