The licensure provisions of ORS 479.905 to 479.945 do not apply to the employees of a telecommunications utility or competitive telecommunications provider, both as defined in ORS 759.005, cooperative corporation organized under ORS chapter 62 or unincorporated association providing intrastate telecommunications service in Oregon engaged in the course of employment in providing, installing or maintaining:
(1) Voice transmission products;
(2) Data transmission products; or
(3) Intercom and paging systems.