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Operational Features
5-16 41-001343-02 REV04 – 05.2014
Method 1
You can set a time zone using the Time Zone option in the IP Phone UI or you can use the “time zone name” parameter
in the configuration files. Both methods allow you to enter a value from the Time Zone table. The list of time zone names
is provided in the table in Appendix A, the section, “Time Zone Name/Time Zone Code Table” on pageA-42. The follow-
ing is an example:
time zone name: US-Eastern
Method 2
You can use the Time Zone option in the IP Phone UI or your can use the “time zone name” parameter in the configura-
tion files, and specify a value of “Custom” for this parameter (must use initial caps). The “Custom” option allows you to
customize the time zone for your area using additional configuration parameters. The following is an example using rel-
ative time for EST:
time zone name: Custom
The following table identifies the additional time zone and DST parameters you can enter in the configuration files.
Custom Configuration
File Parameter Description Example
time zone minutes The number of minutes the time zone is offset from UTC
(Coordinated Universal Time). This can be positive (West of
the Prime Meridian) or negative (East of the Prime Merid-
ian). The default is Eastern Standard Time (EST) with a value
of 300 (GMT minus 5 hours).
time zone minutes: 300
For additional values for this parameter, see
“Custom Time Zone and DST Settings” on
pageA-47.
dst minutes The number of minutes to add during Daylight Saving Time.
Valid values are a positive integer between 0 to 60.
dst minutes: 60
dst [start|end] relative date Specifies how to interpret the start and end day, month, and
week parameters - absolute (0) or relative (1).
dst [start|end] relative date: 1
Absolute Time (not applicable to Eastern Standard Time (EST))
dst start month The month that DST starts. Valid values are 1 to 12 (January
to December).
dst start month: 3
dst end month The month that DST ends. Valid values are 1 to 12 (January
to December).
dst end month: 4
dst [start |end] week Not applicable to absolute time. N/A
dst start day The day of the month that DST starts. Valid values are 1 to
31.
dst start day: 15
dst end day The day of the month that DST ends. Valid values are 1 to 31. dst end day: 31
dst start hour The hour that DST starts. Valid values are an integer from 0
(midnight) to 23.
dst start hour: 5
dst end hour The hour that DST ends. Valid values are an integer from 0
(midnight) to 23.
dst end hour: 23
Relative Time
dst start month The month that DST starts. Valid values are 1 to 12 (January
to December).
dst start month: 4
dst end month The month that DST ends. Valid values are 1 to 12 (January
to December).
dst end month: 5