220 ILCS 5/13-230

"Prepaid calling service" means telecommunications service that must be paid for in advance by an end user, enables the end user to originate calls using an access number or authorization code, whether manually or electronically dialed, and is sold in predetermined units or dollars of which the number declines with use in a known amount. A prepaid calling service call is a call made by an end user using prepaid calling service. "Prepaid calling service" does not include a wireless telecommunications service that allows a caller to dial 9-1-1 to access the 9-1-1 system, which service must be paid for in advance, and is sold in predetermined units or dollars and the amount declines with use in a known amount.