System Time/Date must be set at the programmed Attendant phone (usually Station 100).
1. Dial [692] on the dial pad. A confirmation tone will sound.
2. Enter date and time as follows: YYMMDDHHMM
When the correct number of digits are entered, a confirmation tone will sound.
3. Press the ON/OFF button to OFF to update the display.
YY = Year (00-99) HH = Hour (00-23)
MM = Month (01-12) MM = Minute (00-59)
DD = Day (01-31)