1. In this Act:(a) “telecommunication” means a message transmitted by means of electromagnetic waves or otherwise in the form of words, writing, images, symbols or other indications;
(b) “line” includes the space between a transmitter and a receiver of telecommunications and any other channel of transmission of telecommunications;
(c) “rent” includes any sum payable for the use of a telecommunication service, except the installation costs of such a service if they are indicated on an invoice in such a way as not to be mistaken for any other sum;
(d) “user” means a person who sends or receives a telecommunication at his own expense, in Québec, or who uses in Québec a telecommunication service other than a telephone service which is movable property within the meaning of the Retail Sales Tax Act (chapter I-1);
(e) “registration certificate” means a registration certificate issued under this Act;
(f) “regulation” means a regulation made by the Government under this Act.