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Cisco Unity Connection

Field Notice: FN - 62668 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco Unity Connection


Revised October 30, 2007

February 1, 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

1.3

30-OCT-2007

Added DDTS CSCsh91477 and CSCsh99128. Added workarounds and patches for Unity Connection 1.0, 1.1 and 2.0 to the Workaround/Solution section.

1.2

07-MAR-2007

In the Background section, last paragraph: changed "CiscoUnityConnection1.2.1ES28.exe" to "CiscoUnityConnection1.2.1ES29.exe". Added information on CUCServerUpdatesWizard-v.1.0.15-02-2007-K9.exe and CiscoUnityConnection1.2.1ES29.exe to Workaround/Solution section.

1.1

28-FEB-2007

Changed UC 1.2(1)ES21 to UC 1.2(1)ES28 in Workaround/Solution section. Changed CiscoUnityConnection1.2.1ES21.exe to CiscoUnityConnection1.2.1ES28.exe in Background section.

1.0

01-FEB-2007

Initial Public Release

Products Affected

Products Affected

UC - UNITY CONNECTION

Problem Description

According to a new policy act, the US Government will extend Daylight Savings Time in the United States starting in March 2007.

The Operating Systems of most Cisco products that support Daylight Savings 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, President Bush signed into law the Energy Policy Act, which extends Daylight Saving Time (DST) by four weeks from the second Sunday of March to end on the first Sunday of November. The Secretary of Energy will report the impact of this change to Congress, and then Congress retains the right to resume the 2005 Daylight Savings Time schedule once the Department of Energy study is complete. This law takes effect March 1, 2007.

Table 1 Summary of changes to Daylight Savings Time

Event

Prior to 2007

2007 and After

Start

First Sunday in April

Second Sunday in March

End

Last Sunday in October

First Sunday in November

The Energy Policy Act of 2005, bill number H.R.6.ENR, can be found at the Library of Congress - Thomas Home website.

Search for "Daylight Savings" to find the Act in various stages.

The Cisco Unity Connection Server Updates wizard installs the latest Microsoft updates that are required with Cisco Unity Connection. The DST fix for Unity Connection will be included in CiscoUnityConnection1.2.1ES29.exe, which is available for download from the Unity Connection Software Download Page (registered customers only) , provided the proper Cisco support contract is in place.

Problem Symptoms

Without the undertaking of the steps described in this notice, the potential problem is that the system time and all timestamps will be incorrect by an hour for three weeks in the spring and one week in the fall for the year 2007 and beyond.

This can have a major impact on any event correlation activities that are performed as part of normal operations, troubleshooting, and monitoring.

For example, with security related devices, where logs may be captured, correlated, and stored for future reference, this time change could render them incorrect for situations where they need to be recalled to rebuild a sequence of events. The incorrect timestamps may not be an issue for events that get immediate action, but future reference back to these events would reference incorrect times.

In addition, any device with time based controls and activities, such as authentication servers, synchronization activities, and scheduled events, such as batch jobs, timed backups, or automated scripts, would be impacted.

Workaround/Solution

To comply with this government mandate, Cisco has begun to take the necessary steps to conform to the new US Daylight Savings Time standard that will begin in March, 2007.

The intent of this document is to inform Cisco customers on the plan that Cisco is preparing in order to bring the Unified Communications applications and associated platforms into compliance with this new US government mandate.

Workaround or patches for various Unity Connection releases:

Unity Connection 1.1

Unity Connection 1.1 will not be updated to include the new Daylight Savings Time changes.

Upgrade to Unity Connection 1.2.

Unity Connection 1.2

Step 1: Install Cisco Unity Connection 1.2 SR2 posted on Unity Connection Software Download (registered customers only) page. Alternatively, customers can also install CiscoUnityConnection1.2.1ES29.exe located at the Unity Connection Software Download but it is recommended all customers install 1.2SR2.

Step 2: Install ServerUpdatesWizard-v.2.0.5-10-2007-K9 posted on the Microsoft Updates for Unity Software Download (registered customers only) page, located at the Unity Connection Software Download (registered customers only) page.

Unity Connection 2.0

The US DST changes are included in Unity Connection 2.0 and no further updates are required.

Entitlement:

Customers with Software Application Support (SAS) service contracts or no contract will need to purchase the upgrade to Unity Connection 1.2.

Customers with Software Application w/ Upgrade contracts or Essential Operate Service contracts or Select Operate Service contracts are entitled to Unity Connection 1.2 upgrades and may use the Product Upgrade Tool (registered customers only) to obtain Unity Connection 1.2 media disks.

DDTS

To follow the bug ID link below and see detailed bug information, you must be a registered user and you must be logged in.

DDTS

Description

CSCsh91477 (registered customers only)

Notification: Notifications off by 1 hr after new DST rules take effect

CSCsh99128 (registered customers only)

CUC 1.2(1) TUI will give 1 hr off with DST 2007 patch applied.

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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