Tenn. Code Ann. § 48-18-201: Meetings

(a) The board of directors may hold regular or special meetings in or out of this state. Unless the bylaws otherwise provide, special meetings of the board of directors may be called by the chair of the board, the president, or any two (2) directors.

(b) Unless the charter or bylaws provide otherwise, the board of directors may permit any or all directors to participate in a regular or special meeting by, or conduct the meeting through the use of, any means of communication by which all directors participating may simultaneously hear each other during the meeting. A director participating in a meeting by this means is deemed to be present in person at the meeting.