CUCM Timezone

Question

hello dear,
why do we have two parameters for the timezone on CUCM?
you can set timezone through CLI command line, and you can have your time zone on GUI interface, system / date and time where you use it in device pool.
and for the note they can be different values.
so what is the difference between the two?
as long as i use NTP Server to synchronize with, we cannot check time zone through GUI interface os administration.
what it looks for me is that the CLI parameter is the one that take effect, while the GUI parameter affects nothing and is useless.
please can you confirm?
one other issue is that how may i configure Daylight time saving through CLI Command line? and the offset
regards,

Answer 1

Hi
You can set timezones no the date/time groups, and you can also set NTP servers. Some phones will use the NTP servers you specify, and others will use the time of the CallManager server.
If your CCM has the wrong time zone (or has the wrong UTC, and a timezone that is set to make it appear right) then phones will have incorrect time if they offset from the CCM UTC rather than using NTP.
For the server:
1) First do a 'show timezone list', find your timezone, and note the number
2) Then do a 'set timezone x' where x is your timezone number from step 1
On the date/time groups, I would set always set a correct timezone, and NTP servers.
Regards
Aaron
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