The United States Supreme Court has held that a ban on obscene dial-a-porn telephone communications under Section 223(b) of the Communications Act of 1934 is constitutional, but a ban on indecent dial-a-porn messages under the same act is not constitutional.
Sable Communications v. FCC, ___ U.S. ___, 109 S. Ct. 2829 (1989).
Eileen M. Dempsey,
Constitutional Law - First Amendment - Freedom of Speech - Communications Act of 1934 - Obscenity - Indecency,
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol28/iss4/12