Tennessee Code Title 65. Public Utilities and Carriers § 65-21-110

(a) It is unlawful for any person to damage or obstruct any telegraph or telephone poles, wires, fixtures, or other apparatus or appliances, or to impede or impair the service of any telegraph or telephone line; or to connect by wire, or other means, with any such line, so as to hear, or be in a position to hear, messages going over such line or lines, or for the purpose of getting any service over the line or lines, without first procuring the consent of the owner or owners of the line, or the duly authorized agent of same.

(b) A violation of this section is a Class C misdemeanor.