2005, No.20 (d) Telecommunications Act 2005 123 specifications to service providers requesting interconnection; and only uses information received from a service provider seeking interconnection for the purposes for which such information was supplied and does not disclose the information or otherwise use the information to obtain a competitive advantage. 36. Interconnection Charges-(1) Interconnection charges of dominant service providers designated in accordance with section 34 shall be cost-based. The Regulator may approve a plan to phase in this requirement over time, taking into account the financial impact on the affected dominant services providers. (2) In establishing charges for interconnection, dominant service providers designated in accordance with section 34 shall comply with any rules or orders applicable to interconnection, including any pricing, costing and cost separation guidelines established by order of the Regulator. (3) The Regulator may require the interconnection charges of any dominant service provider designated in accordance with section 34 to be approved by the Regulator in advance, including the power to direct such dominant service provider to implement charges determined by the Regulator. 37. Reference Interconnection Offers-(1) Every dominant service provider designated in accordance with section 34 shall: (a) prepare a reference interconnection offer for approval by the Regulator within the time period specified by order of the Regulator; (b) periodically update the reference interconnection offer as determined by order of the Regulator; and (c) publish its approved reference interconnection offer by: