220 ILCS 5/13-303
Whenever the Commission is of the opinion that a telecommunications carrier is failing or omitting, or is about to fail or omit, to do anything required of it by law or by an order, decision, rule, regulation, direction, or requirement of the Commission or is doing or permitting anything to be done, or is about to do anything or is about to permit anything to be done, contrary to or in violation of law or an order, decision, rule, regulation, direction, or requirement of the Commission, the Commission shall file an action or proceeding in the circuit court in and for the county in which the case or some part thereof arose or in which the telecommunications carrier complained of has its principal place of business, in the name of the People of the State of Illinois for the purpose of having the violation or threatened violation stopped and prevented either by mandamus or injunction. The Commission may express its opinion in a resolution based upon whatever factual information has come to its attention and may issue the resolution ex parte and without holding any administrative hearing before bringing suit. Except in cases involving an imminent threat to the public health and safety, no such resolution shall be adopted until 48 hours after the telecommunications carrier has been given notice of (i) the substance of the alleged violation, including citation to the law, order, decision, rule, regulation, or direction of the Commission alleged to have been violated and (ii) the time and the date of the meeting at which such resolution will first be before the Commission for consideration.
The Commission shall file the action or proceeding by complaint in the circuit court alleging the violation or threatened violation complained of and praying for appropriate relief by way of mandamus or injunction. It shall be the duty of the court to specify a time, not exceeding 20 days after the service of the copy of the complaint, within which the telecommunications carrier complained of must answer the complaint, and in the meantime the telecommunications carrier may be restrained. In case of default in answer or after answer, the court shall immediately inquire into the facts and circumstances of the case. The telecommunications carrier and persons that the court may deem necessary or proper may be joined as parties. The final judgment in any action or proceeding shall either dismiss the action or proceeding or grant relief by mandamus or injunction as prayed for in the complaint, or in such modified or other form as will afford appropriate relief in the court's judgment.
220 ILCS 5/13-303