03-24-2015 12:35 AM - edited 03-17-2019 02:25 AM
Hi,
We are using cisco CP-7821 IP phones but some IP phones are showing incorrect time. Need assistence for fix this issue.
03-24-2015 04:35 AM
What sort of 'incorrect'? Minutes out of sync, or hours out of sync? I.e. drift, or timezone?
Have you configured and assigned NTP references in CUCM?
Aaron
03-24-2015 05:45 AM
Hi Aaron
Thanks for your reply...
Hours & Minuts both are out of sync....
Current time is 06:11PM but some IP phones are showing 12:42PM.
and I have already configured and assigned NTP references in CUCM.
Neeraj
03-24-2015 05:49 AM
Hi Neeraj,
Did you assign the correct date and time group for the phones in CUCM ?
Verify the Time Zone on the NTP server and your CUCM
03-24-2015 07:20 AM
Hi Neeraj,
Just look into this bug related to Asia Time Zone for 78xx series. what is firmware for IP phones?
Any chace if u can upgrade one problematic phone to latest firmware
03-24-2015 10:39 PM
Hi Aman,
As per your suggestion, I checked the firmware version of IP phones and i found that some IP phones which are showing correct timing having firmware version
sip78xx.10-1-1SR1-4.loads
And some which are showing incorrect timing having firmware version
sip78xx.10-2-1-12SR1-4.loads
> Time zone is correct because only 4 out of 30 showing incorrect time.
Neeraj
03-25-2015 10:46 AM
Hi Neeraj,
even though the problematic phones have got latest firmware available on cisco site.
either u can try degrading the firmware or open TAC to get ES version.
regds,
aman
03-26-2015 12:36 AM
Hi Aman,
I have downgrade the FW version from sip78xx.10-2-1-12SR1-4.loads To sip78xx.10-1-1SR1-4.loads but the problem is still same.
Neeraj
03-26-2015 01:44 AM
Hi Neeraj,
It is strange.
I am just guessing : can u try doing factory reset for one phone and then, check on sip78xx.10-1-1SR1-4 ?
regds,
aman
03-26-2015 04:16 AM
Hi Aman,
Thanks for your help,
Problem has been resolved after factory reset.
Activity:
1> Downgrade the fw version from new to old
2>factory reset
Now all IP phones are showing correct date and time.
Regards,
Neeraj
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