(1) This Regulation applies to disputes -

(a) arising between providers of electronic communications networks or services in the State, in connection with existing obligations under these Regulations,

(b) between such undertakings and other undertakings benefiting from obligations of access or interconnection arising under the Directive and under these Regulations, or

(c) between providers of electronic communications networks or services and providers of associated facilities in connection with existing obligations under the Directive and under these Regulations.