DST patch

[Philbert221]

Hi all

Does anyone know if you have the BCM pointing to a NTP server, it negates the need to apply the DST patch?

Regards

 

[acewarlock]

I would say yes, as it would get it's time from it.

 

[biv343]

I thought that for a moment too, but unfortunately no. NTP delivers time in UTC/Greenwich mean time. The NTP server doesn't know what time zone you're in. When a system gets it's time from NTP, it then calculates the differential from GMT based on the time zone setting. If you set the time zone for eastern, that's GMT -5.

Unfortunately you'll need the patch.

 

[Philbert221]

Thanks for the replies. I did some more independant research and found out that biv is exactly right. NTP works strictly off Zulu time and doesn't give a darn what time zone your in.

 

[biv343]

Take a look at this program.

http://www.intelliadmin.com/networkadministrator.exe

This will change the registry value for DST on any NT 4.0 or 2000 system. This is the answer for the pre release 3.5 systems.

 

[NTL555]

what if you have it pointing to a NIST time server in the specific time zone... such as NIST in Pacific NIST in Mountain, etc. Does it still work?

NTL555

 

[acewarlock]

It depends on if the server is giving the time as local or Zulu time.

 

[biv343]

Doesn't matter. A time server is a time server. There aren't individual servers for different time zones. All are based off UTC time.

From the NIST site:

http://tf.nist.gov/general/dst.htm

I set my computer clock to NIST time. Will the new rules affect me?
There shouldn't be any problems if your operating system has the latest updates. All NIST time services broadcast Coordinated Universal Time (UTC). Corrections for your local time zone and for Daylight Saving Time are provided by your computer's operating system. Therefore, it is important that you have the latest software updates for your operating system. For example, if you use Microsoft products, information about DST updates can be found here:

 

[pbxn]

Well maybe I am a fluke case, but my BCM's ended up disabling the NTP option and kept the old time..

 

[Philbert221]

Does anyone know if you sync the time off Caller ID, it's local time or GMT.

 

[biv343]

If you sync off trunk time, you get the time that the central office equipment has, which should be local time.

 

[Philbert221]

that sounds logical. This would only work if you have Caller ID correct?

 

[biv343]

Caller ID on analog trunks only. It doesn't work on PRI.