Late last week the Federal Communications Commission released a Notice of Apparent Liability against AT&T for running microwave radio links without the proper licenses. These links are often used as point-to-point backhauls to move data long distances, and sometimes they are used to connect cell nodes in remote locations to the larger network.
The shenanigans first came to light in 2011, when the FCC found an AT&T microwave link in Puerto Rico that was operating on the wrong frequency. The company subsequently conducted a review and found that hundreds of its microwave links were operating outside of licensed parameters and, in some cases, were not licensed at all. AT&T claims these links were part of acquisitions it made from 2009-2012, and in simple terms neglected to file the right paperwork to adequately license them. But the scale of the problem isn’t minor: at least 240 point-to-point microwave licenses in all require either major modifications or minor modifications to be brought into compliance. All have been operating outside license parameters (or without licenses at all) for three to four years.