Thanks for sharing On Tue, Jan 3, 2012 at 9:10 PM, datucha123 datucha123 <datucha...@gmail.com>wrote:
> Well, CUCM IP Phones does not take time from NTP, the "NTP Reference" is > only for SIP Phones. As well as the SIP Phones on CME can also get time > from NTP - "ntp-server" command in voice register global. > > I have made a very simple test, to prove that the UCM Platform TimeZone, > and even the Routers Timezone does not have any impact on IP Phones time: > > Well I have changed the UCM Platform Timezone, but the IP Phones still > showed up the older time. So the Platform Timezone does not have any effect > on IP Phones time. > The same was done on the Router - changed the IOS Timezone, and the IP > Phones were still showing up the older time. So the IOS Timezone does not > effect the IP phones Time. > > On Tue, Jan 3, 2012 at 7:14 PM, Ken Wyan <kew...@gmail.com> wrote: > >> For CUCM Phones , timezone of the date/time group applies. We can define >> an NTP server for a specific date-time group (independant of CUCM time) >> For CME Phones time-zone configured under telephony-service applies. But >> CME phones have to take time from Router only. (Router can sync to an >> external NTP Server) >> >> I haven't decoded NTP messages to know whether it contain time in UTC or >> does it contains NTP server's time & it's time offset from UTC. >> >> On Tue, Jan 3, 2012 at 2:51 PM, datucha123 datucha123 < >> datucha...@gmail.com> wrote: >> >>> Please correct me if I am wrong: >>> >>> When the CUCM is synchornized with NTP, it synchronizes its UTC time >>> with NTP, and then we can set the Timezone for the Platform, which will >>> effect only OS (setting the Timezone in OS does not effect the Time on IP >>> Phones). >>> >>> But when we are configuring the Date/Time Group, and setting the >>> Timezone, it is based on the NTP synchornized UTC Time of the OS (Not the >>> Time that is received by the Timezone in OS). >>> >>> The same goes for the Routers - they synchronize time through NTP, and >>> they basically synchronize their UCT Time, and setting the Timezone on the >>> Router will not effect the Telephony-service time. When configuring the >>> TimeZone in Telephony-Service for IP Phones, the TimeZone is based on the >>> Routers UTC time and not based on the Routers TimeZone corrected time. >>> >>> >>> >>> _______________________________________________ >>> For more information regarding industry leading CCIE Lab training, >>> please visit www.ipexpert.com >>> >>> Are you a CCNP or CCIE and looking for a job? Check out >>> www.PlatinumPlacement.com <http://www.platinumplacement.com/> >>> >> >> >
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
