Idaho Code § 61-314: Schedule of rates within and without state.

Every telephone corporation shall print and file or cause to be filed with the commission schedules showing all rates, rentals, charges and classifications for the transmission of messages or conversations between all points within this state and all points without this state on its route and between all points within this state and all points without this state on every route leased, operated or controlled by it and between all points on its route or on any route leased, operated or controlled by it within this state and all points without this state on the route of any telephone corporation whenever a through route and joint rate shall have been established between any two (2) such points.