N.C. Gen. Stat. § 62-44
The Commission may, upon its own motion or upon written complaint by any person, after notice and hearing, require any two or more telephone or telegraph utilities to establish and maintain through lines within the State between two or more localities, which cannot be communicated with or reached by the lines of either utility alone, where the lines or wires of such utilities form a continuous line of communication, or could be made to do so by the construction and maintenance of suitable connections or the joint use of equipment, or the transfer of messages at common points. The rate for such service shall be just and reasonable and the Commission shall have power to establish the same, and declare the portion thereof to which each utility affected thereby is entitled and the manner in which the same must be secured and paid. All necessary construction, maintenance and equipment in order to establish such service shall be constructed and maintained in such manner and under such rules, with such divisions of expense and labor, as may be required by the Commission.
N.C. Gen. Stat. § 62-44