Brand new Yealink T-54, provisions and works fine on 3CX. On reboot, the time is reset to 00:00 and Fri Sep 01 date. What I've done: - Factory reset and reprovision. After boot shows 00:00 Fri Sep 01. - Firmware update (through 3CX) to latest supported version. - Changed NTP servers to local pool.ntp addresses. Does not sync time. - Checked 3CX server. Time zone and time / date are correct. All softphones are working with proper dates / times. - Manually set time and date on phone. On reboot, it resets back to 00:00 Fri Sep 01. - Time zone and DST settings are set correctly on the Yealink. This was done by 3CX on provision. This is the only issue on an otherwise excellent phone. Any ideas?