No person shall send messages or use language or terms which are obscene, lewd or immoral with the intent to offend by means of or while using a telephone or telegraph facility, equipment or wires of any person, firm or corporation engaged in the transmission of news or messages between states or within the State of Illinois. The use of language or terms which are obscene, lewd or immoral is prima facie evidence of the intent to offend. (Ord. G-577, 10-22-1996)