htluo Wed, 04/21/2010 - 05:56
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Depending on your Windows version, there are some registry settings you need to set:


HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NTPServer\Enabled
Changing the ‘Enabled’ flag to the value 1 enables the NTP Server.


HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Parameters\Type
Change the server type to NTP by specifying ‘NTP’ in the ‘Type’ registry entry.


HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config\AnnounceFlags
Set the ‘Announce Flags’ registry entry to 5, to indicate a reliable time source.


HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config\LocalClockDispersion

Set 'LocalClockDispersion' to 0


The last one is most important one.


After changing registry, you need to restart "Windows Time" service.


Then you may go to CUCM > OS Administration > Settings > NTP Server to configure the time source(windows DC) address.


Michael

http://htluo.blogspot.com

Richard Simmons Tue, 04/29/2014 - 01:28
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Hi Michael,

I know this is an old post but I've just used this on Windows 7 and its worked perfectly, many thanks!

Richard

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