Cisco ip phones not getting the correct time

[akram.root]

Hello all,

I have a cisco ip phones registered on cluster cucm publisher and subscriber , the problem that i have the ip phones not getting the correct time from NTP  it gets time less than 10 min , when i checked the ntp server from cucm with : show ntp status i find the correct time . 

Best regards

[Ratheesh Kumar]

Hi there

Whats the model of phone and CUCM version you are running ? This might be a  firmware issue of phones. Try updating firmware to the latest and give a shot

Hope this Helps

Cheers
Rath!

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[akram.root]

 Thankyou for your reply ,

The Phone is registered in the Subscriber when i checked the Synronisation of NTP on the Subscriber i found this (image in below) 

Best regards 

[Roger Kallberg]

The subscriber(s) should be automatically set to get the time from the publisher. See this output from one of our subscribers for reference.

admin:utils ntp config 

This node is configured to synchronize with one of the following NTP server(s):
  usdenextcucm01      

admin:utils ntp server list 
usdenextcucm01

admin:utils ntp status 
ntpd (pid 10873) is running...

     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*10.192.21.31    10.192.4.210     2 u  154 1024  377    0.363   -0.219   0.249


synchronised to NTP server (10.192.21.31) at stratum 3
   time correct to within 54 ms
   polling server every 1024 s

Current time in UTC is : Tue Mar 15 09:14:17 UTC 2022
Current time in America/Chicago is : Tue Mar 15 04:14:17 CDT 2022

[akram.root]

Thank you for your reply ,

When i checked  Utils ntp status  in Subscriber it gives me :

Utils ntp status

Ntpd (pid 26205) is running…

No association ID's returned

Unsynchronised

  time server re-starting

  polling server every 8 s

How can i do to resolve this ?

Best regards

[Roger Kallberg]

Not sure, but as a first step I would recommend you to restart the subscriber node. Then when it comes back check the database replication across your CM system.

[akram.root]

The replication between publisher and subscriber is good .

Best regards

[Roger Kallberg]

As a matter of fact restart the Publisher as well. Something is off with your system.

[akram.root]

The subscriber gets the correct time now after restart cluster , but the unsync message still persist on subscriber . Thank for your help.

Best regards

[Mick35]

Hi,

You probably hit this issue : CSCvs38748

Cisco answer ==> The "/etc/ntp.conf" is empty or corrupted so you need Tac assistance (root access) to update this file with the CUCM IP address.

My alternative answer (without need to ask the TAC) ==> Log into the OS Admin page on the Subscriber. Then go to the page "Settings --> IP --> Publisher" and just click on the "save" button without change anything.

Then, all files in the Subscriber which are based on the Publisher IP address, will be updated. Hence the "/etc/ntp.conf" will be ok.

[Nithin Eluvathingal]

The issue is for a perticular model or for all of them ? can you make sure that the you have selected proper time zone in Date and time group and applied on the device pool. 

As @Ratheesh Kumar  mentioned, if there is a firmware upgrade available upgrader the firmware and see if it make a change. 

[akram.root]

Thank you for your reply ,

When i checked the phone is registered in Subscriber ,and yhe subscriber show this :

Utils ntp status

Ntpd (pid 26205) is running…

No association ID's returned

Unsynchronised

  time server re-starting

  polling server every 8 s

Best regards 

[Nithin Eluvathingal]

Subscriber should sync with publisher and it should show synchronised and not unsynchronised.

Resolve  the NTP issues  and I hope the phones will have the right time 

[akram.root]

I checked the replication it's good , and the publisher is synronised good with NTP and show the correct time , but in the subscriber not .

Best regards 

[Elliot Dierksen]

Are they SIP phones? If so, you will need to add a phone NTP reference to the date/time group that is referenced by the phone's device pool. SCCP phone synch to the publisher automatically. Most SIP phones need a specific phone NTP reference in their DTG.