This document refers to the issues related to 2010 Spring Daylight Savings Time (DST) for Cisco Unified Communications Manager (CUCM). The document in reference includes hyperlinks to Cisco Bug Toolkit, Cisco Software Center, or other appropriate resource for specific issues related to DST.
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The information in this document is based on the Cisco Unified Communications Manager 5.1(3) and higher.
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
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DST updates are applied independent of CUCM software from version 7.1(3) onwards. So, you will not have to upgrade your CUCM to get DST updates. A separate DST update file will be provided if necessary. For detailed information, refer to the Changes for Time Zones and DST in CUCM 7.1(3) and Later section of the document Daylight Savings Time (DST) during Spring 2010 .
In the US, time springs forward on March 14, 2010, at 2:00 AM local time. There are no major changes to version requirements from the Fall 2009 DST event. If you have a DST issue, refer to the DST in United States section of the document Daylight Savings Time (DST) during Spring 2010 .
For information regarding DST issues in Argentina, refer to the DST in Argentina section of the document Daylight Savings Time (DST) during Spring 2010 .
For other DST issues, refer to Daylight Savings Time (DST) during Spring 2010 .