Yealink VC400 Administrator's Manual page 175

Time Zone
A time zone is a region on Earth that has a uniform standard time. It is convenient for areas in
close commercial or other communication to keep the same time. When configuring the system
to obtain the time and date from the NTP server, you must set the time zone.
Daylight Saving Time
Daylight Saving Time (DST) is the practice of temporary advancing clocks during the
summertime so that evenings have more daylight and mornings have less. Typically, clocks are
adjusted forward one hour at the start of spring and backward in autumn. Many countries have
used DST at various times, details vary by location. DST can be adjusted automatically from the
time zone configuration. Typically, there is no need to change this setting.
DST parameters are described below:
Parameter
DHCP Time
Time Zone
Primary Server/NTP Primary
Server
Secondary Server/NTP
Secondary Server
Synchronism
(15~86400s)
Daylight Saving
Time
Description
Enables or disables the system to
update time with the offset time
obtained from the DHCP server.
Default: Disabled
Note: it is only available to GMT
0.
Configures the time zone.
Default: +8 China (Beijing)
Configures the primary NTP
server.
Default: cn.pool.ntp.org
Configures the secondary NTP
server.
Default: cn.pool.ntp.org
Configures the interval (in
minutes) for the system to
synchronize time and date with
NTP server.
Default: 1000.
Configures the Daylight Saving
Time (DST) type.
The available types for the
system are:
Disabled-not use DST.

Configuring System Settings
Configuration
Method
Web User Interface
Remote Control
Web User Interface
Remote Control
Web User Interface
Remote Control
Web User Interface
Web User Interface
Remote Control
Web User Interface
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