| Fucntion | Situation | How to do |
| PICK UP | when you pick up other phone in your group | * + 3 |
| Transfer | when you transfer the phone | ‘전환’ button + extension number OR ‘Hook’ button + extension number |
| Call Forward | when you can’t answer the phone | on flexible working hour : # + 9 + 3200 on working from home : # + 9 + 3300 in experiment : # + 9 + 3400 on vacation : # + 9 + 3500 on a business trip : # + 9 + 3600 in a meeting : # + 9 + 3100 in class : # + 9 + 3800 in absence : # + 9 + 3900 Mobile : # + 9 + 9 + mobile number + * |
| Call Forward off | Call Forwarding off | # + # + 9 |
| DND (Do Not Disturb) | when you call rejection | # + 5 |
| DND OFF | DND off | # + # + 5 |
| CAMP | auto redial when the caller is busy | ‘전환’ button + # + 1 |
| CAMP OFF | Auto-redial reserve off | # + # + 1 |
| short-button setting | when you register short-button | ‘전환’ button > press short-button > press phone number > press short-button |
