The FCC said AT&T has agreed to pay a fine of $450,000 for operating microwave stations outside the parameters of its licenses to do so.
Microwave stations are generally set up in point-to-point configurations to beam signals across terrain where it is uneconomical to run copper or fiber wires. Companies use them to serve as backbone connections on the telephone network, to connect cellular base stations to the larger network, or to relay television signals.
According to the FCC, AT&T altered dozens of its microwave stations without filing the proper paperwork with the FCC to account for the variances. The FCC has been investigating this matter for several years and first announced its intent to fine AT&T in January 2015.
The settlement marks an end to the investigation. In addition to the $450,000 fine, AT&T will also have to implement a compliance plan and conduct regular reviews of its wireless fixed microwave stations.