28defaulted groups.3. To add new group, press Options > Add Group.4. To edit group, press Edit Group. You can also set aspecific ringtone by selecting Ringtone > @ > select theringtone.Caller identificationCaller identificationN1. Press Menu > Settings > Call > Display My Number.2. Select Network Default, Show or Hide > Select.Using your headsetYou can send or receive a call using your headset.When you connect your headset to the jack the button on theheadset works as follows.Note: You need to use the headset designed for this device,and it is optional item. Also not every headset has a button.While in standby mode1. Press the button once to list recent calls.2. Press the button twice to redial the last call.While the phone is closed1. Press the button once to receive a call.2. Press the button once to end the call.Service numbers and fixeddialingCalling your service numbersNYou can use the service number to reach the service provider.1. Press Menu > Address Book > Service Numbers.2. Select a number > press S.Viewing the fixed dialing listFixed dialing is a service that limits your access to specificnumbers in the address book list recorded on the SIM. Input thePIN2 to set up or cancel this service.1. Press Menu > Address Book > FDN List.2. Select a number > press S.