Illinois Statutes Chapter 720. Criminal Offenses § 5/26.5-2. Harassment by telephone

(1) Making any comment, request, suggestion or proposal which is obscene, lewd, lascivious, filthy or indecent with an intent to offend;

(2) Making a telephone call, whether or not conversation ensues, with intent to abuse, threaten or harass any person at the called number;

(3) Making or causing the telephone of another repeatedly to ring, with intent to harass any person at the called number;

(4) Making repeated telephone calls, during which conversation ensues, solely to harass any person at the called number;

(5) Making a telephone call or knowingly inducing a person to make a telephone call for the purpose of harassing another person who is under 13 years of age, regardless of whether the person under 13 years of age consents to the harassment, if the defendant is at least 16 years of age at the time of the commission of the offense; or

(6) Knowingly permitting any telephone under one's control to be used for any of the purposes mentioned herein.