Hi everyone,
I have a CTX-670 phone system that I've set up in a testing environment however for some reason if the system powers down and restarts all programming changes are gone and the time resets to Jan 1 2004 12:00 AM? The CPU is BCTU1A Rev. AR2.21 MH109.00. If I format the smart-media card and back up the config the programming will stay but the time still resets? If I power down and remove the smart-media card the system fails to boot up at all. I know in most electronics with EEProms a cell battery keeps the config and time going for between 5-10 years upon power failure. Could the 3v cell battery on the card be dead and is it even replaceable? Is this normal behavior?

Thanks!