CASE NUMBER: 08-0447-TP-ATA CASE DESCRIPTION: TTI NATIONAL INC DOCUMENT SIGNED ON: 5/2/2024 DATE OF SERVICE: ________________________________________ 06/18/2009 Memo closing cases with an effective date of 06/18/09. 04/03/2008 In the matter of the application of TT1 National, Inc. to detariff certain tier 2 services and make changes related to the implementation of 06-1345-TP-ORD.