37In that context, in accordance with point (a) of the second subparagraph of Article 5(1) of that directive, and without prejudice to the steps which may be taken with regard to undertakings having significant market power under Article 8 thereof, those authorities must be able to impose ‘obligations on undertakings that control access to end-users, including in justified cases the obligation to interconnect their networks’ solely in order to ensure end-to-end connectivity (see, to that effect, judgment in TeliaSonera Finland, C‑192/08, EU:C:2009:696, paragraph 59).
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