I am installing a Cisco CME, and had to change the timezone information after the phones had been registered. At first, the phones didn't change, but a reset of the router did cause all phone currently registered to change to the correct time. However, phones that were not connected at the time and then subsequently reconnected still come up with the incorrect time. I have tried resetting the system again and that did not change this. So now I have 3 phones with the incorrect time (ahead by one hour). These are 7961 phones. Any thoughts on why and how to correct?