Answered Question
Jul 18th, 2010
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the time on the phones are slipping each day and have to keep resetting... Im looking for some guidance in how to configure a Public NTP on the CUCM 6.x and UC.  Any help would greatly be appreciated.

source of public NTP?

Assistance in synching it?

Thanks in advance..

Correct Answer by paolo bevilacqua about 7 years 1 week ago

Public NTP is reliable, easy to use and perfectly suited for the average enterprise or home user. Moreover it's free.

I use it without any issue for all my clients since 20 years.

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Overall Rating: 5 (2 ratings)
Md. Mijanur Rahman Sun, 07/18/2010 - 03:15
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Hi, do you have IOS/Unix based NTP server inside your network?

Normally a well planned network should have a NTP server inside the network to source all NTP packets from inside the network and that NTP server is synched with lower stratum NTP source (this might be the public NTP or synced with another NTP server or even manually set).

I never heard someone has synched the CUCM to public NTP, may be it's not a good practice.


Md. Mijanur Rahman Sun, 07/18/2010 - 06:24
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Thanks for the info, +5 for your input. I didn't have idea on it before.

It will help me to think about using it from further deployment.

misy Wed, 07/21/2010 - 15:37
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Thnx for the link to the NTP? configured it to synch with ....

command for reference

utils ntp config

utils ntp restart

utils ntp status..

admin:utils ntp status
ntpd (pid 7954) is running...

     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================     10 l   49   64    1    0.000    0.000   0.008
*    2 u   31   64    1  106.997   -3.685   0.225

synchronised to NTP server ( at stratum 3
   time correct to within 18 ms
   polling server every 16 s

Current time in UTC is : Wed Jul 21 22:57:26 UTC 2010
Current time in America/Denver is : Wed Jul 21 16:57:26 MDT 2010


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