(1) Every telecommunications company shall file with the commission and shall print and keep open to public inspection at such points as the commission may designate, schedules showing the rates, tolls, rentals, and charges of such companies for messages, conversations and services rendered and equipment and facilities supplied for messages and services to be performed within the state between each point upon its line and all other points thereon, and between each point upon its line and all points upon every other similar line operated or controlled by it, and between each point on its line or upon any line leased, operated or controlled by it and all points upon the line of any other similar company, whenever a through service and joint rate shall have been established or ordered between any two such points.

(2) If no joint rate covering a through service has been established, the several companies in such through service shall file, print and keep open to public inspection as aforesaid the separately established rates, tolls, rentals, and charges applicable for such through service.

(3) The schedules printed as aforesaid shall plainly state the places between which telecommunications service, or both, will be rendered, and shall also state separately all charges and all privileges or facilities granted or allowed, and any rules or regulations which may in anywise change, affect or determine any of the aggregate of the rates, tolls, rentals or charges for the service rendered.

(4) A schedule shall be plainly printed in large type, and a copy thereof shall be kept by every telecommunications company readily accessible to and for convenient inspection by the public at such places as may be designated by the commission, which schedule shall state the rates charged from such station to every other station on such company's line, or on any line controlled and used by it within the state.

(a) All or any of such schedules kept as aforesaid shall be immediately produced by such telecommunications company upon the demand of any person.

(b) A notice printed in bold type, and stating that such schedules are on file and open to inspection by any person, the places where the same are kept, and that the agent will assist such person to determine from such schedules any rate, toll, rental, rule or regulation which is in force shall be kept posted by every telecommunications company in a conspicuous place in every station or office of such company.

(5) This section does not apply to telecommunications companies classified as competitive under RCW 80.36.320 or to telecommunications services classified as competitive under RCW 80.36.330.