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DST issue

Cisco Unity Connection 1.2(1)

Cisco Call Manager Express Software Version: 12.4(9)T/CME 4.0(0)

Windows Server 2003 SP1

Cisco Catalyst 3560 PoE-24 IOS 12.2(25)SEB4

Cisco IP Phone 7940 Series (7940G on back)

In inheritied this system. I was told that we do not do any updates to the phone server or cisco equipment. The server shows the correct time (Central Daylight Savings Time) and is synced with an outside source.

In CME, shows the correct time as well. I did not see anyplace to set for daylight savings.

Our phones are an hour behind and I have to setup our Weekday hours in Unity to be from 7-4 so that they ring correctly for 8-5.

I looked up the phone model and it says they get the info from IOS.

I could not find a time setting on the GUI so I used telnet to get in on the 3650 and ran a show clock. On Friday March 28th, 2008 at 9 am it says it is Wednesday October 14th, 1994 at 2 pm.

I tried to update the Windows server for DST, but it said it already has a patch for it.

Any help would be nice as I know enough to be dangerous and really do not want to mess up the phone system. If I need updates or upgrades that will be safe to run I am more than willing to image the server and try them. Please also provide the correct patch name if possible as when I looked I found a bunch for CME 4.x(x) and I am really not sure how cisco configures thier file version numbers



Hall of Fame Super Red

Re: DST issue

Hi Clayton,

You may be missing the "summertime" command"

CME - DST changes are outlined in this doc;

Field Notice: FN - 62686 - U.S. Daylight Saving Time (DST) Policy Changes Effective March 2007 - Cisco CallManager Express (CCME)

Hope this helps!


Community Member

Re: DST issue


Thanks for the reply. I did the summer time under the config terminal command. It now shows that the router popped an hour ahead (but date and time are still way off). I reset my phone and no change. It's only the phones that seem off at the moment. Any other suggestions?

In 24 hr format

Current: Friday March 28, 2008 16:20.00 CST

Router: Tuesday Oct 18, 1994 2:38.00 AM CST

Community Member

Re: DST issue

Ok, I am the dummy. I was on the regular router and not the Phone router. I found that it was set to sync with the time server, but for what ever reason it was not working correctly. i made the summertime change so I will see if that fixes it.

Again, thanks Rob for the pointer in the right direction.


Hall of Fame Super Red

Re: DST issue

Hi Clayton,

You are most welcome :)

You may also have a phone firmware issue.Check this out if you are using "Java Based" IP Phone models. These would be the minimum recommended firmware versions;

Customers who are using the following Cisco Unified IP phone models:








are required to upgrade to the following phone firmware to display the correct time:

* CCME 3.X, 4.0 and 4.0(x) customers need to upgrade the phone load to 8.0(4)SR2.

* CCME 4.1 and 7931 customers need to upgrade the phone load to 8.2(2)SR2.

The new Firmware will need to be copied onto Flash) Here's how;

SCCP: Upgrading or Downgrading Phone Firmware Between Versions

To downgrade or upgrade firmware versions on a Cisco Unified IP phone running SCCP, perform the following steps.


Phone firmware for Cisco Unified IP phones to be connected to Cisco Unified CME, including all versions required during an upgrade or downgrade sequence, must be loaded in the ***flash memory of the TFTP server from which the phones download their configuration profiles. For information about installing firmware files in flash memory,


1. enable

2. configure terminal

3. telephony-service

4. load phone-type firmware-file

5. create cnf

6. end

Installing Cisco Unified CME Software

To install Cisco Unified CME in flash memory, perform the following steps.


1. Go to Software Download site.

2. Download archive.

3. Extract files to be downloaded.

4. Use the copy or archive tar command to copy file to flash memory.

5. Use the show flash: command to list files in flash memory.



Step 1 Go to

Step 2 Select the file to download.

Step 3 Download zip file to tftp server.

Step 4 Use the zip program to extract the file to be installed, then:

a. If the file is an individual file, use the copy command to copy the files to router flash:

Router# copy tftp://x.x.x.x/P00307020300.sbn flash:

b. If the file is a tar file, use the archive tar command to extract the files to flash memory.

Router# archive tar /xtract source-url flash:/file-url

Step 5 Verify the installation. Use the show flash: command to list the files installed in in flash memory.

Router# show flash:

31 128996 Sep 19 2005 12:19:02 -07:00 P00307020300.bin

32 461 Sep 19 2005 12:19:02 -07:00 P00307020300.loads

33 681290 Sep 19 2005 12:19:04 -07:00 P00307020300.sb2

34 129400 Sep 19 2005 12:19:04 -07:00 P00307020300.sbn

Hope this helps!


Community Member

Re: DST issue

I looked at that. I am using the straight up 7940's, But this is great info.

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