ZyXEL Communications P-791R, User Manual

Page: 146 / 358

Chapter 13 System
P-791R v2 User’s Guide
146
Time and Date
Setup
Manual Select this radio button to enter the time and date manually. If you configure a
new time and date, Time Zone and Daylight Saving at the same time, the new
time and date you entered has priority and the Time Zone and Daylight Saving
settings do not affect it.
New Time
(hh:mm:ss) This field displays the last updated time from the time server or the last time
configured manually.
When you set
Time and Date Setup to Manual , enter the new time in this field
and then click Apply .
New Date
(yyyy/mm/dd) This field displays the last updated date from the time server or the last date
configured manually.
When you set
Time and Date Setup to Manual , enter the new date in this field
and then click Apply .
Get from Time
Server
Select this radio button to have the ZyXEL Device get the time and date from the
time server you specified below.
Time Protocol Select the time service protocol that your time server sends when you turn on the
ZyXEL 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).
Time Server
Address
Enter the IP address or URL (up to 20 extended ASCII characters in length) of
your time server. Check with your ISP/network administrator if you are unsure of
this information.
Time Zone Setup
Time Zone Choose the time zone of your location. This will set the time difference between
your time zone and Greenwich Mean Time (GMT).
Enable Daylight
Saving
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.
Start Date Configure the day and time when Daylight Saving Time starts if you selected
Enable Daylight Saving . 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 second
Sunday of March. 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
Second , Sunday , March and 2:00 .
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).
Table 44 System > Time Setting
LABEL DESCRIPTION