KX-TD308, KX-TD816, KX-TD1232, KX-TA1232

1. Use phone with intercom number 11, 101, or designated "manager's" phone. It will change the time for all phones.

2. Press PROGRAM.

3. Dial programming access code (probably *#1234)

4. Press NEXT.

5. Press NEXT.

6. Follow screen prompts to replace improper numbers.

7. Press AUTO DIAL/STORE.

8. Press HOLD.

9. Press PROGRAM