Impact DSU I or DSU II

Must be done from station 10 or 12.

1. Press INTERCOM     
2. Dial * # 0 1
3. Dial two digits (00-99) for year,
4. Dial two digits (01-12) for month,
5. Dial two digits (01-31) for day,
6. Dial two digits (00-23) for hour,
7. Dial two digits (00-59) for minutes,
8. Press SPEAKER to end.