To update the daylight savings rule for AEST on the Cisco SPA range follow the guide below;
1- Locate the IP address (Network Settings > Status) and login to your Cisco handset by entering this IP address into your web browser.
2- Next click on the admin tab and then advanced in the top right of the screen.
3- Now select the 'Regional' tab from the menu and scroll down to the bottom and enter the following daylight savings rule start=4/1/7;end=10/1/7;save=-1 and make sure that the time offset value is +1 as shown in the screen shot below.
4- Finally press the submit changes tab and the daylight savings condition will apply.