Procedure for national dispute resolution

(1) The national dispute resolution body initiates a procedure on application.
(2) The following are parties to procedures before the national dispute resolution body:
1. in a procedure under section 128(4), section 134(5), section 149(1), points 1, 2, 3, and 5, the applicant and the owners or operators of public utility networks or other physical infrastructure against whom the procedure is directed;
2. in a procedure under section 149(1), point 4, the applicant and the parties entitled to dispose of network infrastructure in buildings or up to the first concentration or distribution point of a public telecommunications network, against whom the procedure is directed;
3. in a procedure under section 149(1), point 6, the applicant and the operators of network infrastructure constructed under section 72(1), points 1 and 2, against whom the procedure is directed;
4. the persons and associations of persons whose interests are affected by the decision and whom the Federal Network Agency has, on their application, joined to the procedure;
5. in the case of a claim against a railway infrastructure undertaking, the competent railway supervisory authority.
(3) Where, in disputes concerning the existence of a ground for refusal under section 136(4), point 3, section 137(3), point 3, section 141(2), point 4, section 142(4), point 4, section 143(4), point 1, section 153(4), point 3, or section 154(4), second sentence, point 4, critical facilities within the meaning of section 2, point 4, of the Critical Infrastructure Umbrella Act are affected, the Federal Network Agency decides in consultation with the Federal Office for Information Security.