For the purposes of this Chapter:

contribution link means a link for the transmission of sound or television broadcasting signals to a programme production centre;

cost-oriented means based on cost and may involve different cost methodologies for different facilities or services;

enterprise means an “enterprise” as defined in Article 8.1 (Definitions);

essential facilities means facilities of a public telecommunications transport network or service that:

(a) are exclusively or predominantly supplied by a single or a limited number of suppliers; and
(b) cannot feasibly be economically or technically substituted in order to supply a service;

interconnection means linking suppliers providing public telecommunications transport networks or services in order to allow the users of one supplier to communicate with the users of another supplier and to access services supplied by another supplier;

intra-corporate communications means telecommunications through which an enterprise communicates within the enterprise or with or among its subsidiaries, branches and, subject to a Party’s law, affiliates, but does not include commercial or non-commercial services that are supplied to enterprises that are not related subsidiaries, branches or affiliates, or that are offered to customers or potential customers. For the purposes of this definition, “subsidiaries”, “branches” and, where applicable, “affiliates” are as defined by each Party;

leased circuits means telecommunications facilities between two or more designated points that are set aside for the dedicated use of or availability to a particular customer or other users of the customer’s choice;

major supplier means a supplier which has the ability to materially affect the terms of participation, having regard to price and supply in the relevant market for public telecommunications transport networks or services, as a result of:

(a) control over essential facilities; or
(b) use of its position in the market;

network termination point means the physical point at which a user is provided with access to a public telecommunications transport network;

number portability means the ability of end-users of public telecommunications transport services to retain, at the same location, the same telephone numbers without impairment of quality, reliability or convenience when switching between suppliers of like public telecommunications transport services;

public telecommunications transport network means the public telecommunications infrastructure that permits telecommunications between and among defined network termination points;

public telecommunications transport service means a telecommunications transport service that a Party requires, explicitly or in effect, to be offered to the public generally that involves the real-time transmission of customer-supplied information between two or more points without any end-to-end change in the form or content of the customer's information. This service may include, among other things, voice telephone services, packet-switched data transmission services, circuit-switched data transmission services, telex services, telegraph services, facsimile services, private leased circuit services and mobile and personal communications services and systems;

regulatory authority means the body responsible for the regulation of telecommunications;

telecommunications services means all services consisting of the transmission and reception of signals by any electromagnetic means but does not include the economic activity consisting of the provision of content by means of telecommunications; and

user means an enterprise or natural person using or requesting a publicly available telecommunications service.