AUTHORITY: Implementing Sections 8-301, 8-505 and 13-712 and authorized by Section 10-101 of the Public Utilities Act [220 ILCS 5/8-301, 8-505, 13-712 and 10-101].ILLINOIS COMMERCE COMMISSION
Each local exchange carrier shall have written procedures for the periodic testing and maintenance of recording systems to assure the integrity of its operation.