If you have a Cisco UC500 / UC520 device and the CUE or voicemail time is incorrect then you need to change the time – however there is no way to change the time on the CUE.
command so that CME becomes an NTP server.
Now login to the CUE using
session-module integrated-service-engine 0/0 session
command then quickly ctrl + c to cancel the scrolling – your NTP settings will be at the top.
Make a note of these and
go into terminal mode
remove all ntp settings that you noted above
no ntp server x.x.x.x
and now set an NTP server as your internal IP of your CME system.
ntp server 192.168.1.1 prefer
now CUE will sync with CME and your voicemail times will be correct.