User manual
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33002479 06 07/2008
Customizing 
Time Zone 
Parameters
If you want a time zone not listed in the time zone table:
Step Action Comment
1 Write the text rules for the custom 
time zone.
2 Using an FTP client, store your rules 
in the file:
/FLASH0/wwwroot/conf/NTP/
customrules
user ID: ntpupdate
password: ntpupdate
Root directory to store 'customrules' is set by 
the FTP server as: 
/FLASH0/wwwroot/conf/NTP
3 When the rules are written, choose 
the drop down menu on the NTP 
Configuration web page, and 
configure (or reboot) the module by 
selecting
Time Zone = Custom
The NTP component looks for customrules, 
calls the tz compiler and generates a new file 
called 'tz_custom'. This file is binary file and 
should not be edited.
If the tz compiler detects a syntax error in 
customrules, the error is logged in the file:
/FLASH0/wwwroot/conf/NTP/error.log
1. NTP component is not launched
2. NTP Status field in diagnostic web page 
displays NOT OK.
4 If you want more information, the syntax to write those rules along with a few 
examples are found in the module in:
/FLASH0/wwwroot/conf/NTP/instructions.txt










