- If there are reasons to believe that the equipment is not in compliance with the essential requirements. The cost of the tests is at the expense of the responsible person for the distribution or starting of sales phase of the equipment: - if this information is not available the time set by the ARTCI; - if it arises from the tests that the equipment does not comply with the essential requirements. Before ordering the tests, the ARTCI hears the responsible person for the distribution or the start of sales phase of the equipment. Article 96 : The ARTCI may be open to the network public and radio equipments which disturb the Telecommunications / ICT or radio broadcasting take suitable measures. Page 32 Article 97 : The equipment to be connected to a network open to the public and the already approved radio equipment which has been modified approval procedure. Article 98 : The approval ends: - at the expiry of its period of validity, if that one is limited; - when the ARTCI cancels it; - in case of modification of the technical characteristics of the equipments. The ARTCI can cancel an approval for justified reasons, including: - in case of amendment of the provisions of the hereby ordinance or its technical and administrative prescriptions; - if the holder of the approval certificate has not complied with the provisions of the hereby ordinance or the requirements connected to the approval. The ARTCI assesses the possibility of extending the effects of the approval certificates to distributed, sold, installed or operated. Chapter IV: Installer's Authorization