A. The connection from the existing telephone distribution system to the underground telephone distribution systems installed within a subdivision shall be made underground in accordance with the regular extension rules of the utility on file with the Commission.
B. For underground telephone service lines to new residential buildings or mobile homes, the utility shall construct an underground line from the lot line of the applicant's property to the existing underground or overhead line along either side of the street or road in front of the lot, at no charge to the applicant. If there is no telephone line or overhead facilities of another public service company which may be jointly shared along the street or road at that location, then the utility shall construct an underground line to the nearest practicable existing facilities in accordance with the regular extension rules in the tariff of the utility on file with the Commission, subject to appeal to the Commission under Regulation .09 of this chapter, if this should appear to be impracticable.
C. A telephone company may not permit any person not a public service company to make attachment to any telephone company existing overhead facilities for the purpose or intended purpose of providing overhead service to a customer to whom the telephone company is required to provide underground service in accordance with the regulations of the Commission with respect to underground service.