Invoices and Payments If Owner disputes an invoice, either as to amount or entitlement, then Owner shall promptly advise Engineer in writing of the specific basis for doing so, may withhold only that portion so disputed, and must pay the undisputed portion.
Billings and Payments Billings and payments shall be sent to the addresses set out in Appendix F.
Invoicing and Payments II.4.1 Pre-financing:
Costs and Payments During the period that Sprint PCS is curing a breach or operating the Service Area Network under this Section 11.6.3, Sprint PCS and Manager will continue to make any and all payments due to the other party and to third parties under this agreement, the Services Agreement and any other agreements to which such party is bound, except that Sprint PCS may deduct from its payments to Manager all reasonable costs and expenses incurred by Sprint PCS in connection with the exercise of its right under this Section 11.6.3. Sprint PCS' operation of the Service Area Network pursuant to this Section 11.6.3 is not a substitution for Manager's performance of its obligations under this agreement and does not relieve Manager of its other obligations under this agreement.
Tax Returns and Payments; Pension Contributions Borrower and each of its Subsidiaries has timely filed all required tax returns and reports, and Borrower and each of its Subsidiaries, has timely paid all foreign, federal, state, and local taxes, assessments, deposits and contributions owed by Borrower and such Subsidiaries, in all jurisdictions in which Borrower or any such Subsidiary is subject to taxes, including the United States, unless such taxes are being contested in accordance with the following sentence. Borrower and each of its Subsidiaries, may defer payment of any contested taxes, provided that Borrower or such Subsidiary, (a) in good faith contests its obligation to pay the taxes by appropriate proceedings promptly and diligently instituted and conducted, (b) notifies Collateral Agent in writing of the commencement of, and any material development in, the proceedings, and (c) posts bonds or takes any other steps required to prevent the Governmental Authority levying such contested taxes from obtaining a Lien upon any of the Collateral that is other than a “Permitted Lien.” Neither Borrower nor any of its Subsidiaries is aware of any claims or adjustments proposed for any of Borrower’s or such Subsidiaries’, prior tax years which could result in additional taxes becoming due and payable by Borrower or its Subsidiaries. Borrower and each of its Subsidiaries have paid all amounts necessary to fund all present pension, profit sharing and deferred compensation plans in accordance with their terms, and neither Borrower nor any of its Subsidiaries have, withdrawn from participation in, and have not permitted partial or complete termination of, or permitted the occurrence of any other event with respect to, any such plan which could reasonably be expected to result in any liability of Borrower or its Subsidiaries, including any liability to the Pension Benefit Guaranty Corporation or its successors or any other Governmental Authority.