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Cisco Unified IP Phone 7900 Series

Field Notice: FN - 62666 - US Daylight Savings Time Policy Change Effective March 2007 - for Cisco Unified IP Phones 7900 Series


Revised November 1, 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

1.5

01-NOV-2007

Added "It should not be necessary to reset phones after a phone reboot if the version is * 8.2(1)ES5 * 8.2(2) or later per CSCsh12444" to the Workaround/Solution section. Added DDTS CSCsh12444 and CSCsj15453.

1.4

20-SEP-2007

Workaround Solution section, in the table, on the row for "Cisco Unified IP Phone models 7940G and 7960G (SIP and MGCP)", added text "UPDATE: NEW FIRMWARE IMAGE NEEDED DUE TO DEFECT CSCsj15453 FOR SIP. Use SIP IP Phone FW Release 8.7(0) or later." with a hyperlink to the cisco.com software download for SIP IP phones.

1.3

13-MAR-2007

Change the text in the "Cisco Unified IP Phone models 7906G, 7911G, 7931G, 7941G, 7941G-GE, 7961G, 7961G-GE, 7970G, and 7971G-GE (SCCP and SIP" row, "Action" column. Added hyperlink to Important Note. Replaced all the text under the table in the Workaround Solution section. Added links ot other field notices.

1.2

21-FEB-2007

Removed reference to 8.0(4) SR2 and replaced with 8.0(4) SR3 and removed caveat below table in Workaround/Solution section.

1.1

09-FEB-2007

Added CSCse47164 to DDTS and updated Workaround/Solution section.

1.0

31-JAN-2007

Initial Public Release

 

Products Affected

Products Affected

7900 Series

 

Problem Description

Daylight Savings 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 (DST) 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 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 Saving Time schedule once the Department of Energy study is complete. This law takes effect March 1, 2007.

Event

Prior to 2007

Year 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. Search for daylight savings to find the Act in various stages.

Problem Symptoms

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 of 2007 and beyond, unless the steps described in this notice are taken.

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

For example, Call Detail Records, where logs may be captured, correlated, and stored for billing purposes, could be rendered 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 of 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.

Cisco Unified IP Phone Models

Action

Cisco Unified IP Phone 7902G 7905G 7912G (SCCP)

Time information comes from Cisco Unified CallManager / CallManager Express. Update CallManager or CallManager Express to correct the new DST dates.

Cisco Unified IP Phone 7905G 7912G (SIP)

No support. Customer may manually adjust TimeZone parameter. Menu >> Settings >> Network Configuration >> Time Zone Time Zone configuration

Cisco Unified IP Phone models 7906G, 7911G, 7931G, 7941G, 7941G-GE, 7961G, 7961G-GE, 7970G, and 7971G-GE (SCCP and SIP)

New DST rules are present in the following phone firmware releases: 8.0(4)SR3 and 8.2(1) Customers must download and implement these firmware loads. These firmware releases are available (important note) on theSoftware Download (registered customers only) page.

For 7906G,7911G, 7941G/GE, 7961G/GE, 7970G, 7971G, see ***IMPORTANT NOTE*** below.

Cisco Unified IP Phone models 7910G, 7910G+SW, 7940G and 7960G (SCCP)

Time information comes from Cisco Unified CallManager / CallManager Express. Update CallManager or CallManager Express to correct the new DST dates.

Cisco Unified IP Phone models 7940G and 7960G (SIP and MGCP)

UPDATE: NEW FIRMWARE IMAGE NEEDED DUE TO DEFECT CSCsj15453 FOR SIP. Use SIP IP Phone FW Release 8.7(0) (registered customers only) or later.

DST change will be accomplished by a configuration change made by the customer. See the appropriate Administration Guide for configuration instructions by clicking on either the SIP or MGCP link below.

SIP

MGCP

Cisco Unified IP Phone models 7920, 7921, 7935, 7936 and 7985G (SCCP only - no SIP loads)

Time information comes from Cisco Unified CallManager / CallManager Express. Update CallManager or CallManager Express to correct the new DST dates.

 

Important Note

***IMPORTANT NOTE***: For 7906G, 7911G, 7941G/GE, 7961G/GE, 7970G, 7971GE, in addition to the above phone loads, there is one manual workaround that will be needed in order to get the phones to display the correct time.

There is a Daylight Savings Time issue which will be fixed in an upcoming phone release, having the following workaround:

- Reset the IP phone from the CCMAdmin for the phone to get the correct time.

Please be aware that each time IP Phones lose power, the System Administrator will need to reset the IP Phones from CCMAdmin to get the correct time.

It should not be necessary to reset phones after a phone reboot if the version is

* 8.2(1)ES5

* 8.2(2)

or later per CSCsh12444.

For instructions on DST upgrades needed for the Cisco IP Communicator, please refer to:

Field Notice: FN - 62679 - US Daylight Savings Time Policy Change Effective March 2007 - for Cisco IP Communicator (CIPC), Cisco Unified Video Advantage (CUVA), Cisco Unified Personal Communicator (CUPC), and Cisco Softphone.

For instructions on DST upgrades needed for the Cisco Communications Manager, please refer to:

Field Notice: FN - 62669 - U.S. Daylight Savings Time Policy Changes Effective March 2007 - for Cisco CallManager.

For instructions on DST upgrades needed for the Cisco Unity, please refer to:

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

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

CSCsj15453 (registered customers only)

DST time change for SIP 7940/7960 phones (Energy Policy Act '05)

CSCse47164 (registered customers only)

3g-phones -- pick up Sun Java patch to address 2007 DST changes.

CSCsh12444 (registered customers only)

Time zone rules do not update correctly on 3rd-gen phones ("3rd-gen phones" refers to the following Cisco Unified IP Phones: CP-7906G, CP-7911G, CP-7941G, CP-7941G-GE, CP-7961G, CP-7961G-GE, CP-7970G, CP-7971G-GE as well as CP-7942G, CP-7945G, CP-7962G, CP-7965G and CP-7975)

 

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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