Definitions
Article 2
1. For the purposes of this Regulation, the definitions in Regulation (EU) No 531/2012 apply. 2. The following definitions also apply: (a) ‘stable links’ with a Member State means presence on the territory of the Member State arising from a full-time and durable employment relationship, including that of frontier workers; from durable contractual relations entailing a similar degree of physical presence of a self-employed person; from participation in full-time recurring courses of study; or from other situations, such as those of posted workers or retired persons, whenever they involve an analogous level of territorial presence; (b) ‘mobile retail services’ means public mobile communications services provided to end users, including voice, SMS and data services; (c) ‘open data bundle’ means a tariff plan for the provision of one or more mobile retail services which does not limit the volume of mobile data retail services included against the payment of a fixed periodic fee, or for which the domestic unit price of mobile data retail services, derived by dividing the overall domestic retail price, excluding VAT, for mobile services corresponding to the entire billing period by the total volume of mobile data retail services available domestically, is lower than the regulated maximum wholesale roaming charge referred to in Article 12 of Regulation (EU) No 531/2012; (d) ‘pre-paid tariff plan’ means a tariff plan under which mobile retail services are provided upon deduction of credit made available by the customer to the provider on a per-unit basis, in advance of consumption, and from which a customer may withdraw without penalty upon exhaustion or expiry of credit; (e) ‘visited Member State’ means a Member State other than that of the roaming customer's domestic provider; (f) ‘mobile services margin’ means earnings, before interest tax depreciation and amortisation, from the sale of mobile services other than retail roaming services provided within the Union, thereby excluding costs and revenues from retail roaming services; (g) ‘group’ means a parent undertaking and all its subsidiary undertakings subject to its control within the meaning of Council Regulation (EC) No 139/2004 ( 8 ) .