No utility shall directly or indirectly demand, charge, or collect any rate or charge, or impose any classifications, practices, rules, or regulations different from those prescribed in its effective tariff filed with the commission. It shall also file five copies of each subsequent revision. Each revision shall be accompanied by a cover page which contains a list of pages being revised, a statement describing each change, its effect if it is a change in an existing rate, and a statement as to impact on rates of the change by customer class, if any. If a proposed tariff revision constitutes an increase in existing rates of a particular customer class or classes, then the commission may require that notice be given. Each sheet shall show an effective date, a revision number, section number, sheet number, name of the utility, the name of the tariff, and title of the section in a consistent manner.
Sheets issued under new numbers are to be designated as original sheets.
Sheets being revised should show the number of the revision, and the sheet numbers shall be the same. These tariffs shall be filed within the time specified in the commission order finding the telecommunications utility a dominant carrier, or within 60 days in the absence of such a specification. Tariff filings in response to commission orders. Tariff filings made in response to an order issued by the commission shall include a transmittal letter stating that the tariffs attached are in compliance with the order, giving the docket number, date of the order, a list of tariff sheets filed, and any other necessary information. The tariff sheets shall comply with all other rules in this chapter and shall include only changes ordered.