(1) Carriers shall make reasonable provisions to meet emergencies resulting from failures of lighting or power service, unusual and prolonged increases in traffic, illness of personnel, or from fire, storm, or other acts of God and inform its employees as to procedures to be followed in the event of emergency in order to prevent or minimize interruption or impairment of telecommunications service.

(2) Each central office and interexchange toll switching office or access tandem shall contain as a minimum four hours of battery reserve.

(3) In central offices exceeding 5,000 lines and in all interexchange toll switching offices or access tandems, a permanent auxiliary power unit shall be installed. In central offices without permanently installed emergency power facilities, there shall be a mobile power unit available which can be delivered and connected on short notice.