6. The Commission may on its own initiative or at the request of the provider, engage in a dialogue with the provider to determine whether, in light of the provider’s specific circumstances, the intended or implemented measures referred to in paragraph 1, point (b), are effective and proportionate in achieving the objectives pursued. In particular, the Commission shall ensure that the measures taken by the service provider under paragraph 1, point (b), meet the requirements referred to in paragraph 3, points (a) and (c).