Operational Features5-20 41-001160-04 Rev 02, Release 2.5IP Phone Administrator GuideTime Zone & DSTThere are two ways you can set the time zone on the IP Phones.First Method - You can set a time zone using the Time Zone option in the IPPhone UI or you can use the “time zone name” parameter in the configurationfiles. Both methods allow you to enter a value from the Time Zone table. The listof time zone names is provided in the table in Appendix A, the section, “TimeZone Name/Time Zone Code Table” on page A-54. The following is an example:time zone name: US-EasternSecond Method - You can use the “time zone name” parameter in theconfiguration files, and specify a value of “Custom” for this parameter (must useinitial caps). This method allows you to customize the time zone for your areausing additional configuration parameters. The following is an example usingrelative time for EST:time zone name: CustomThe following table identifies the additional parameters you can enter in theconfiguration files if you want to customize your time zone.Custom ConfigurationFile Parameter Description Exampletime zone minutes The number of minutes the time zone isoffset from UTC (Coordinated UniversalTime). This can be positive (West of thePrime Meridian) or negative (East of thePrime Meridian). The default is EasternStandard Time (EST) with a value of 300(GMT minus 5 hours).time zone minutes: 300Note: For additional values forthis parameter, see “CustomTime Zone and DST Settings”on page A-61.dst minutes The number of minutes to add duringDaylight Saving Time. Valid values are apositive integer between 0 to 60.dst minutes: 60dst [start|end] relative date Specifies how to interpret the start andend day, month, and week parameters -absolute (0) or relative (1).dst [start|end] relative date: 1
