ZyXEL Communications Vantage CNM 2.3 User Manual page 53

The following table describes the fields in this screen.
Table 12 Device Operation > Device Configuration > General > Time Setting
LABEL
Time Protocol
Time Server
Address
Time Zone
Daylight Savings
Start Date
Vantage CNM User's Guide
DESCRIPTION
Select the time service protocol that your timeserver sends when you
turn on the device. Not all time servers support all protocols, so you
may have to check with your ISP/network administrator or use trial
and error to find a protocol that works.
The main difference between them is the format.
Daytime (RFC-867) format is day/month/year/time zone of the
server.
Time (RFC-868) format displays a 4-byte integer giving the total
number of seconds since 1970/1/1 at 0:0:0.
The default, NTP (RFC-1305), is similar to Time (RFC 868).
Select None to enter the time and date manually.
Enter the IP address or domain name of your timeserver. Check with
your ISP/network administrator if you are unsure of this information
(the default is tick.stdtime.gov.tw).
Choose the Time Zone of your location. This will set the time
difference between your time zone and Greenwich Mean Time (GMT).
Daylight saving is a period from late spring to early fall when many
countries set their clocks ahead of normal local time by one hour to
give more daytime light in the evening.
Select this option if you use Daylight Saving Time.
Configure the day and time when Daylight Saving Time starts if you
selected Daylight Savings. The o'clock field uses the 24 hour
format. Here are a couple of examples:
Daylight Saving Time starts in most parts of the United States on the
first Sunday of April. Each time zone in the United States starts using
Daylight Saving Time at 2 A.M. local time. So in the United States you
would select First, Sunday, April and type 2 in the o'clock field.
Daylight Saving Time starts in the European Union on the last Sunday
of March. All of the time zones in the European Union start using
Daylight Saving Time at the same moment (1 A.M. GMT or UTC). So
in the European Union you would select Last, Sunday, March. The
time you type in the o'clock field depends on your time zone. In
Germany for instance, you would type 2 because Germany's time
zone is one hour ahead of GMT or UTC (GMT+1).
Chapter 4 Device General Settings
53