its customers to be resolved by the ACCC at that time if necessary. The processes that take place in moving from one regulatory period to the next, including whether it is appropriate for NBN Co's regulatory cost base to be rolled forward based on the actual expenditure it has incurred in the previous regulatory period, or whether only the costs that it had forecast to incur should be included. This can have important implications for NBN Co's incentives to keep costs to efficient levels. The ACCC re-iterates that it expects parties to agree to short term arrangements for the continuing supply of NBN Co's services until assessment of the undertaking concludes and the regulatory framework is established. The ACCC will host a stakeholder forum on the SAU in December 2012. The ACCC will shortly advise of forum details on its website.