Many of the options that you can use during a voice call arenetwork services.Voice and video mailboxesTo call your voice or video mailbox (network services, videomailbox available only in UMTS networks), in the homescreen, select to open the dialler, tap and hold 1, andselect Voice mailbox or Video mailbox.1 To change the phone number of your voice or videomailbox, select Menu > Settings and Calling > Callmailbox, a mailbox, and Options > Change number.2 Enter the number (obtained from your network serviceprovider), and select OK.Answer or reject a callTo answer a call, press the call key.To answer the call when the touch screen is locked, swipeSwipe to answer from left to right.To unlock the touch screen without answering a call, swipeSwipe to unlock from right to left, and then answer or rejectthe call, or send a reject call text message. The ringing toneis muted automatically.If you do not want to answer a call, to reject the call, pressthe end key. If the call divert feature (network service) isactivated, rejecting an incoming call also diverts the call.To mute the ringing tone of an incoming call, select Silence.To send a reject call text message without actually rejectingthe call, informing the caller that you cannot answer the call,select Silence and Send msg., edit the message text, andpress the call key.To activate the reject call text message feature, and to writea standard message, select Menu > Settings and Calling >Call > Reject call with message, and Message text.Make a conference callYour device supports conference calls between a maximumof six participants, including yourself.1 Make a call to the first participant.2 To make a call to another participant, select Options >New call. The first call is put on hold.3 When the new call is answered, to join the firstparticipant in the conference call, select .To add a new person to the call, make a call to anotherparticipant, and add the new call to the conference call.To have a private conversation with one of theparticipants, select .Go to the participant, and select . The conference callis put on hold on your device. The other participants canstill continue the conference call.To return to the conference call, select .36 Make calls