1. Main Phone (Ext.200)
2. Handset On Hook
3. Intercom, 652
4. Time In Military Time HH/MM/SS, Redial

Time Change Toshiba DK280, DK16e, DK40, DK424i

1. Main Phone (Ext. 200 or the Operator's Telephone)
2. Handset On Hook
3. Press Intercom (Extension Button)
4. #652
5. Time in Military Time HH/MM/SS, Redial

1. Main Phone (Ext.200)
2. Handset On Hook
3. Intercom, 651
4. Date In YY/MM/DD, Redial

Date Change Toshiba DK280, DK16e, DK40, DK424i

1. Main Phone (Ext. 200 or the Operator's Telephone)
2. Handset On Hook
3. Press Intercom (Extension Button)
4. #651
5. Date In YY/MM/DD, Redial