Section R746-340-4 - Emergency OperationA. Emergency Service -- Telecommunications corporations shall make reasonable arrangements to meet emergencies resulting from failures of service, unusual and prolonged increases in traffic, illness of personnel, 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 telecommunication service.B. Battery Power -- Each central office shall have a minimum of three hours battery reserve.C. Auxiliary Power -- In central offices exceeding 5,000 lines, a permanent auxiliary power unit shall be installed.Utah Admin. Code R746-340-4