Ariz. Admin. Code § 14-2-1901
A. "Authorized Carrier" means any Telecommunications Company that submits, on behalf of a Customer, a change in the Customer's selection of a provider of telecommunications service, with the Subscriber's authorization verified in accordance with the procedures specified in this Article.
B. "Commission" means Arizona Corporation Commission.
C. "Customer" means the person or entity in whose name service is rendered, as evidenced by the signature on the application or contract for service, or by the receipt or payment of bills regularly issued in their name regardless of the identity of the actual user of service.
D. "Executing Telecommunications Carrier" means a Telecommunications Company that effects a request that a Subscriber's Telecommunications Company be changed.
E. "Letter of Agency" means written authorization, including internet enabled with electronic signature, by a Subscriber authorizing a Telecommunications Company to act on the Subscriber's behalf to change the Subscriber's Telecommunications Company.
F. "Subscriber" means the Customer identified in the account records of a Telecommunications Company; and any person authorized by such Customer to change telecommunications services or to charge services to the account; or any person contractually or otherwise lawfully authorized to represent such Customer.
G. "Telecommunications Company" means a public service corporation, as defined in the Arizona Constitution, Article 15, § 2, which provides telecommunications services within the state of Arizona and over which the Commission has jurisdiction.
H. "Unauthorized Carrier" means any Telecommunications Company that submits, on behalf of a Customer, a change in the Customer's selection of a provider of telecommunications service without the subscriber's authorization verified in accordance with the procedures specified in this Article.
I. "Unauthorized Change" ("slamming") means a change in a Telecommunications Company submitted on behalf of a Subscriber that was not authorized in accordance with R14-2-1904 or not verified in accordance with R14-2-1905.
J. "Unauthorized Charge" means any charge incurred as a result of an Unauthorized Change.
Ariz. Admin. Code § R14-2-1901