WINCC SOFTWARE UPDATE SERVICE, VALID FOR 10 LICENSES AUTOMATIC SUPPLY WITH UPGRADES AND SERVICE PACKS WITHIN THE FRAMEWORK OF THIS CONTRACT, YOU WILL RECEIVE UPDATED SOFTWARE VERSIONS FOR A PERIOD OF ONE YEAR. EXTENDED BY ANOTHER YEAR, IF IT IS NOT CANCELED THREE MONTHS PRIOR TO ITS EXPIRATION. PERIOD OF DELIVERY AND PERFORMANCE 1 YEAR FROM DATE OF INVOICE PREREQUISITE FOR CONTRACT CURRENT VERSION OF THE SOFTWARE
