Field Notice: FN - 62676 - 2007 U.S. Daylight Saving Time Policy Changes for Cisco Unified Presence Server (CUPS)

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Updated:October 31, 2007

Document ID:FN62676

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Revised October 31, 2007

January 31, 2007

NOTICE:

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Revision History

Revision	Date	Comment
1.1	31-OCT-2007	Removed "Effective March 2007" from Title. Removed 1.0(2) from Product Affected section. Changed Link and wording in Workaround/Solution section.
1.0	31-JAN-2007	Initial Public Release

Products Affected

Products Affected	Comments
Cisco Unified Presence Server - 1.0(3)	Versions earlier than 1.0(3) are affected

Problem Description

Daylight Saving Time changes have been mandated by the Energy Policy Act of 2005 (H.R.6.ENR), Section 110. These changes will go into effect in March 2007.

The Operating Systems of most Cisco products that support Daylight Saving Time have built in mechanisms to automatically change the times, based on current United States rules. Once the new Act is implemented, the time on devices that maintain time zone information will continue to change according to the old Rules, unless changes are made.

Background

On August 8, 2005, the Energy Policy Act of 2005 (H.R.6.ENR), was signed into law. Section 110 of this Act modified the time change dates for Daylight Saving Time (DST) in the U.S.

Beginning in March of 2007, DST will begin on the second Sunday of March and end the first Sunday of November.

For 2007 and beyond, the daylight saving time period will be:

2:00 A.M. on the second Sunday in March

2:00 A.M. on the first Sunday in November

For more information on the Energy Policy Act of 2005 please see H.R. 6. (See Section 110)

Problem Symptoms

The clock displayed on the main interface and timestamps on CUPS may be an hour off during the below timeframes in 2007:

-March 11 to April 1 in 2007

-October 28 to November 4 in 2007

Workaround/Solution

All Cisco Unified Presence Server 1.0 software installations and upgrades must be done by using the Software Upgrades menu options in Cisco Unified Communications Operating System Administration. The system can upload and process only Cisco Systems approved software. A DST fix for CUPS is included in version 1.0(3) or later. Customers may download the latest software release with the appropriate support contracts in place by going to the following link:

Download Software (registered customers only) .

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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