To synchronize Cisco Unity Express (CUE) time with Cisco CallManager Express time, configure this on Cisco CallManager Express :
configure terminalntp master 1end
Configure this on Cisco Unity Express:
configure terminalntp server preferclock timezone [ENTER] (Make the appropriate selections.)endwrite memory
Reboot the CUE module.
Verify the following on CUE:
show ntp associationsshow clock [detail]
Depending on your platform, you may have Real-Time Clock (RTC) chip capability. This is a list of routers and the RTC hardware capability:
If your router does not have an RTC chip, it cannot be used as a Network Time Protocol (NTP) server.