Terms used in this chapter mean:
(1) "Department," the South Dakota Department of Revenue;
(2) "Engaging in business," carrying on or causing to be carried on any activity with the purpose of direct or indirect benefit;
(3) "Secretary," the secretary of the Department of Revenue;
(4) "Telecommunications company," any person, as defined by § 2-14-2, trustee, lessee, receiver, or municipality providing any telecommunications service as defined in § 10-33A-2;
(5) "Telecommunications gross receipts tax," the gross receipts tax imposed by this chapter.