(4) Upon receipt of a request by the Commission to modify an interconnection agreement the parties shall negotiate and submit a revised interconnection agreement to the Commission within ten days of receipt of the request by Commission. (5) Where the parties are unable to agree on the requested modification, the Commission may, if it determines that a negotiated agreement is not achievable, provide an interconnection agreement to the parties that includes the terms and conditions and with the charges payable for the interconnection. (6) Where licensees are in the process of negotiating an interconnection agreement or have agreed on an agreement but the agreement is pending before the Commission for approval, the parties may agree to exchange traffic based on interim conditions and notify the Commission. Provided that the conditions agreed on in the interconnection agreement once approved by the Commission shall apply in respect of the period for which the agreement is negotiated. (7) A party who is aggrieved by the decision of the Commission may, within fifteen days from the date of the Commission’s decision, appeal to the Tribunal. 7. Confidentiality. (1) A party to an interconnection agreement may, before the filing of the agreement with the Commission, mark provisions containing trade or operating secrets and the party shall additionally submit to the Commission for review a modified version of the agreement which does not, in that party's view, disclose the trade or operating secrets. (2) Where the Commission considers the marking unjustified, it shall consult with the respective telecommunications service provider prior to making a decision to allow third parties to inspect the agreements in whole or in part and may subsequently restrict inspection to the modified version of the interconnection agreement. 8. Interconnection. (1) Any transmission of calls across and within telecommunications systems shall be seamless to both the calling party and the party receiving the call.