I have a problem with the time synchronization in the CUCM, therefore in the phones.
The version is: 12.5.1.11900-146
I have configured an NTP that has the correct time, but the time in the CUCM and the phones have one more time, restart the NTP services and synchronize again.
admin:show status
Host Name : PUBLISHER-BE7M-S1-01.sonda.com
Date : Mon Sep 5, 2022 11:36:22 (incorrect hour)
Time Zone : Chile Summer Time (America/Santiago)
Locale : en_US.UTF-8
Product Ver : 12.5.1.11900-146
Unified OS Version : 7.0.0.0-4
admin:utils ntp status
ntpd (pid 32170) is running...
remote refid st t when poll reach delay offset jitter
==============================================================================
*172.27.44.28 200.27.106.116 2 u 54 64 377 0.316 25.071 36.067
+172.25.107.13 172.25.107.14 4 u 55 64 377 0.437 45.754 66.761
synchronised to NTP server (172.27.44.28) at stratum 3
time correct to within 457 ms
polling server every 64 s
Current time in UTC is : Mon Sep 5 14:39:55 UTC 2022
Current time in America/Santiago is : Mon Sep 5 11:39:55 -03 2022
The GMT correct is -4, in CUCM is configure ok.