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Cisco Unified Videoconferencing 3500 Series Products

Field Notice: FN - 62734 - US Daylight Savings Time Policy Change Effective March 2007 - for Cisco Unified Video Conferencing (CUVC) Products


Revised October 16, 2007

March 9, 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.


Products Affected

Products Affected

Comments

CUVC MCU - 5.1

Cisco Unified Video Conferencing MCU versions 5.1 and earlier are not affected.

CUVC Manager - 5.0

Cisco Unified Video Conferencing Manager version 5.0 may be affected.

Problem Description

New U.S. Daylight Savings Time rules go into effect in March 2007. Consequently, Cisco Unified Video Conferencing Manager meetings may occur and appear one hour off of their intended scheduled time. Timestamps for Cisco Unified Video Conferencing Manager system logs may also be off by an hour.

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

to

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

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

The old DST policy dictated the start of DST was the first Sunday of April and ended on the last Sunday of October.

Problem Symptoms

Cisco Unified Video Conferencing Manager meetings may appear one hour off from their original time on Cisco Unified Video Conferencing Manager between the old DST dates and new DST dates in 2007:

-March 11 to April 1 in 2007

-October 28 to November 4 in 2007

The Outlook calendar invitation received from a meeting scheduled in the Cisco Unified Video Conferencing Manager web interface does not contain the proper DST offset for time zones that use DST. This does not happen with a calendar invitation received from a meeting scheduled using the Microsoft Outlook add-on tool.

System logs may also show up as one-hour off during the above time frames.

Workaround/Solution

To account for the new DST policy, the following steps must be taken on the Cisco Unified Video Conferencing Manager server:

  1. Update the MCS server's Microsoft OS with a patch for the new DST policy. The fix for the new DST policy can be achieved in one of two ways:

    1. Apply a full MCS OS upgrade, which contains fixes for both the new DST policy and for other defects. The full MCS OS upgrades are 2000.4.4(sr4), OS 2000.4.3aSR9, or OS 2000.4.2sr16 (or higher OS release) and can be downloaded from the CallManager & Voice Apps Crypto Software ( registered customers only) page

    2. **ADDED March 6, 2007**: Apply an MCS OS update, which only contains the fix for the new DST policy. The MCS OS update can be found in the above URL listed with the file name of "win-OS-Upgrade-K9.2007-DST-Update.1-0-1.exe". This update is applicable for MCS OS versions 2000.2.7, 2000.4.2, 2000.4.3, 2000.4.3a, 2000.4.4, and 2000.4.4a.

      To find out which MCS OS version is in use, please do the following on the MCS server: Start Menu -> Cisco OS Version

  2. The affected Cisco Unified Video Conferencing Manager software must be updated with the following hotfix and can be obtained from the Cisco IP/VC Software Download ( registered customers only) page.

    ciscouvcm-5.0.0.5.21-2007-DST-Update-1.1

    This hotfix will update the DST rule so that future meetings will schedule properly. It will also resend the Outlook calendar invitation for affected meetings to update meeting participants with the correct time.

    No time change is required on other Cisco Unified Video Conferencing products (MCUs and GWs). Customers who require accurate time on other Cisco Unified Video Conferencing products should synchronize system clocks to an NTP server. NTP time is ultimately dictated by tier 0 time servers hosted by entities who keep official US time. The official NTP servers will automatically adjust to the new DST policy.

DDTS

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DDTS

Description

CSCsi05728 ( registered customers only)

Need to update for DST changes

Revision History

Revision

Date

Comment

1.1

16-OCT-2007

Updated MCS OS upgrade versions in the Workaround/Solution section.

1.0

09-MAR-2007

Initial Public Release

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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