I installed a new station line at a customer site - ACS R3.0. Using my display phone at station 11 I programmed the new station. While doing so, I noticed Time and Date were wrong so I tried to reset them without success. Data line is 222222 for date and 2222 for time. When I enter new value, as soon as I input last digit it reverts to all 2s. I tried a warm boot #728 with no change. Any suggestions before I power off reset? They do not have display phones so it isn't crucial yet, but they have expressed an interest in V-mail.