How often should a phone check the CCM server for a date and time update or what causes an update? I have a 7940 and a 7960 in my lab and I was doing some DST testing. The phones have been idle since I changed the date and time on the CCM server and it's been about 18 hours and the phones haven't updated yet. If I place a call from the phones, then the date and time will update. Is this normal behavior?