3.
National regulatory authorities shall in preparation for the review provided for in Article 11, monitor developments in wholesale and retail charges for the provision to roaming customers of voice and data communications services, including SMS and MMS, including in the outermost regions referred to in Article 299(2) of the Treaty. National regulatory authorities shall also be alert to the particular case of involuntary roaming in the border regions of neighbouring Member States and monitor whether traffic steering techniques are used to the disadvantage of customers. They shall communicate the results of such monitoring to the Commission, including separate information on corporate, post-paid and pre-paid customers, every six months.
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Source: EUR-Lex (Cellar) · retrieved 2026-11-09 · Text as adopted (Official Journal); later amendments are not incorporated in this text.