ZyXEL Communications ISG50-ISDN User Manual page 669

Table 266 Configuration > System > Date and Time (continued)
LABEL
Get from Time
Server
Time Server
Address
Sync. Now
Time Zone Setup
Time Zone
Enable Daylight
Saving
Start Date
End Date
Offset
Apply
Reset
ISG50 User's Guide
DESCRIPTION
Select this radio button to have the ISG50 get the time and date from the time
server you specify below. The ISG50 requests time and date settings from the
time server under the following circumstances.
• When the ISG50 starts up.
• When you click Apply or Synchronize Now in this screen.
• 24-hour intervals after starting up.
Enter the IP address or URL of your time server. Check with your ISP/network
administrator if you are unsure of this information.
Click this button to have the ISG50 get the time and date from a time server
(see the Time Server Address field). This also saves your changes (except
the daylight saving settings).
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
Enable Daylight Saving. The at 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 type 2 in the at 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 at 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).
Configure the day and time when Daylight Saving Time ends if you selected
Enable Daylight Saving. The at field uses the 24 hour format. Here are a
couple of examples:
Daylight Saving Time ends in the United States on the first Sunday of
November. Each time zone in the United States stops using Daylight Saving
Time at 2 A.M. local time. So in the United States you would select First,
Sunday, November and type 2 in the at field.
Daylight Saving Time ends in the European Union on the last Sunday of
October. All of the time zones in the European Union stop using Daylight Saving
Time at the same moment (1 A.M. GMT or UTC). So in the European Union you
would select Last, Sunday, October. The time you type in the at 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).
Specify how much the clock changes when daylight saving begins and ends.
Enter a number from 1 to 5.5 (by 0.5 increments).
For example, if you set this field to 3.5, a log occurred at 6 P.M. in local official
time will appear as if it had occurred at 10:30 P.M.
Click Apply to save your changes back to the ISG50.
Click Reset to return the screen to its last-saved settings.
Chapter 52 System
669