(1) The Regulator shall be responsible for the following specific tasks -

(a) implementing ex ante market regulation, including the imposition of access and interconnection obligations;

(b) ensuring the resolution of disputes between undertakings;

(c) carrying out radio spectrum management and decisions;

(d) contributing to the protection of end-user rights in the electronic communications sector, in coordination, where relevant, with other competent authorities;

(e) assessing and monitoring closely market-shaping and competition issues regarding open internet access;

(f) assessing the unfair burden and calculating the net cost of the provision of universal service;

(g) ensuring number portability between providers;

(h) performing any other tasks reserved to the Regulator in accordance with these Regulations.

(2) The Regulator and other competent authorities shall -