In plain terms. The Communications Act of 1934 created the Federal Communications Commission and established the framework for regulating interstate wire and radio communications. Its customer proprietary network information (CPNI) provisions at 47 U.S.C. § 222 impose privacy and security duties on telecommunications carriers.
Citation. Pub. L. 73-416 (Jun. 19, 1934); 47 U.S.C. ch. 5.