(2) Every telecommunications utility shall file, with and as part of every schedule filed under subsection (1) of this section, all rules and regulations that in any manner affect the rates charged or to be charged for any service.
(3) Where a schedule of joint rates or charges is or may be in force between two or more telecommunications utilities, the schedule shall in like manner be printed and filed with the commission. [1987 c.447 §12; 2005 c.232 §15]