UC520 Time Changing - Phones not updating

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Dec 10th, 2009
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Hi all,

Having issues with a UC520 deployment. I have set the time and date on this unit repeatly. Every week or so the clock seems to change back an hour. There are no time servers. What's going on?

When manually changing it, the phones are not updating their time.

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Steven DiStefano Fri, 12/11/2009 - 02:51
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What release of UC520 Bundle are you running?

What release of CCA are you using to configure ir?

mobilepc10 Fri, 12/11/2009 - 03:27
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Cisco IOS Software, UC500 Software (UC500-ADVIPSERVICESK9-M), Version 12.4(22)YB4, RELEASE SOFTWARE (fc1)

CCA 2.1 (1)

New Zealand time zone.

Steven DiStefano Fri, 12/11/2009 - 04:45
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1 hour?  hmmmm....

Wonder if its DST?

Check this...


bachaa Fri, 12/11/2009 - 07:12
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I've had to use CLI to update the CNF files and reset the phones-

If I remember correctly-


     create cnf-files

    reset all



mobilepc10 Fri, 12/11/2009 - 13:45
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Yeah it's weird. I thought the latest CCA fixed this... apparently not.

It's stayed in sync for the last couple of days. If I set a NTP server it goes out of sync by one hour.


Is the region information correct? There is no New Zealand option



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