Changing the time and date on a NEC 22B display tel
To change the time or date on your NEC DSX 22B display tel you will need to first locate extension 300 (check the display or press the 6 on your keypad).
Leave the handset down and press # 8 3
Enter the time in 24-hour format
Press the HOLD button
Enter 2 digits for the month, 2 digits for the day and 4 digits for the year
Press HOLD then Speaker to exit
Video Tutorial
NEC DSX-40 Plug and Play Telephone Systems

