Article 3
Member States shall ensure that economic operators have the right to import, market, connect, bring into service and maintain terminal equipment.
However, Member States may:
1. in the case of satellite earth station equipment, refuse to allow such equipment to be connected to the public telecommunications network or to be brought into service where it does not satisfy the relevant common technical regulations adopted in pursuance of Directive 1999/5/EC or, in the absence thereof, the essential requirements laid down in Article 3 of that Directive; in the absence of common technical rules of harmonised regulatory conditions, national rules shall be proportionate to those essential requirements and shall be notified to the Commission in accordance with Directive 98/34/EC where that Directive so requires;
2. in the case of other terminal equipment, refuse to allow such equipment to be connected to the public telecommunications network where it does not satisfy the relevant common technical regulations adopted in pursuance of Directive 1999/5/EC or, in the absence thereof, the essential requirements laid down in Article 3 of that Directive;
3. require economic operators to possess the technical qualifications needed to connect, bring into service and maintain terminal equipment on the basis of objective, non-discriminatory and publicly available criteria.