S.C. Code Ann. § 58-9-820
In addition to the foregoing expressly enumerated powers the Commission shall enforce, execute, administer and carry out by its order, ruling, regulation or otherwise all the provisions of Articles 1 through 13 of this chapter relating to the powers, duties, limitations and restrictions imposed upon telephone utilities by Articles 1 through 13 of this chapter or any other provisions of the law of this State regulating telephone utilities.