Room 641A, 611 Folsom Street, San Francisco
The location of the Department of Defense' domestic spying program hardware, according to AT&T whistleblower on Wired News.
But feeling the heat, Congress made a big show of allegedly cutting off funding for TIA in late 2003, and the political fallout resulted in Adm. Poindexter's abrupt resignation last August. However, the fine print reveals that Congress eliminated funding only for "the majority of the TIA components," allowing several "components" to continue (DOD, ibid). The essential hardware elements of a TIA-type spy program are being surreptitiously slipped into "real world" telecommunications offices.
In San Francisco the "secret room" is Room 641A at 611 Folsom Street, the site of a large SBC phone building, three floors of which are occupied by AT&T. High-speed fiber-optic circuits come in on the 8th floor and run down to the 7th floor where they connect to routers for AT&T's WorldNet service, part of the latter's vital "Common Backbone." In order to snoop on these circuits, a special cabinet was installed and cabled to the "secret room" on the 6th floor to monitor the information going through the circuits. (The location code of the cabinet is 070177.04, which denotes the 7th floor, aisle 177 and bay 04.) The "secret room" itself is roughly 24-by-48 feet, containing perhaps a dozen cabinets including such equipment as Sun servers and two Juniper routers, plus an industrial-size air conditioner.