Welltech ePBX80 V.1.1 - Manual (Page 82)

Welltech Technology Co., Ltd. 82
Time Zone Choose the Time Zone of your location. This will set the time
differences between your time zone and Greenwich Mean Time
(GMT).
The default is (GMT+08:00) Beijing, Hong Kong, Perth,
Singapore, Taipei.
Current Time This field display the time of your ePBX80.
NTP Server
Local NTP Server Select the Enable or Disable option if you use Local NTP Server.
Enable this option will make ePBX80 to be a NTP server and
send the ePBX80’s local time to the NTP client. The default is
Enable.
Apply Click the Apply button to save your customized settings and
exit this screen.