11. Network upgrading. (1) In order to achieve the quality of inter-operability to the prescribed level a licensee shall— (a) notify the Commission and all other licensees interconnecting in the network, of any planned change in the network capacity, technology, structure and configuration, at least three months prior to the planned change; and (b) provide details relating to any change in the licensee’s network, including traffic forecast to the Commission at least three months prior to the planned change. 12. Interconnection charges structure. (1) All charges for interconnection services shall— (a) be objective, independently verifiable and fair; (b) be charged for each type of telecommunications service related to interconnection; (c) not be designed to facilitate cross-subsidies by an interconnect provider of its network; (d) be below the retail charges levied by the interconnect provider for the provision of any retail service that makes similar use of those network elements that are required by both the retail and interconnection service; and (e) be sufficiently below retail service charges to allow for recovery of the incremental retail costs associated with provision of the retail service supported by the interconnection service that the interconnect service provider would have to incur in order to compete effectively with the interconnect provider at the retail level. (2) All charges for interconnection shall be structured to distinguish and separately price— (a) fixed charges for the establishment and implementation of physical interconnection;