Changing the Time and Date on the 3Com NBX Family of Telephone Systems
The 3Com NBX should be set to automatically change to and from daylight saving time.
instructions are for your convenience when needed.
From your web browser:
1. Log onto the 3Com NBX. If you don't know the name try http://192.168.1.190
2. In the "System Configuration" window, click on "System Settings"
3. Click the "Date and Time" button
4. Enter the date, time, and time zone and check "Daylight Saving Time"