Update the time on switch (in this case it’s (Cisco)/192168.1.1). Try log off and log in and Check NTP server’s time.

Update/re-sync IPO Office.
IPO server must be in sync with the NTP server and must show the proper local (AEST) time. Check the phone’s time and if it is showing the old incorrect time, reboot the phone and check.
It takes some time for the IP Office to sync’ with the NTP and if there’s a time refresh on the NTP, the changes are not prompt and will take some time before they are sync’d with the IPO and to the phones.
