Our Yealink (T42G) phones this morning didn't update to DST. I checked the 3CX PBX software (v12) and realized that the daylight savings time wasn't set to change until tomorrow (3/11), which is the correct day for 2012 (must be the default). So I updated the Daylight Savings Time StartTime setting (in Phone Provisioning) to this morning at 10AM (in one hour). Now it's been a couple hours after that and our phones are still 1 hour behind. I restarted one phone and that one does have the correct time now. I don't have to reset every phone do I?