C a l l f u n c t i o n s20■ Options during a callMany of the options that you can use during a call are network services.For availability, contact your network operator or service provider.To increase or decrease the volume during a call, press the navigation key right or left.For some of the following options, select Options during a call:Mute or Unmute, Contacts, Menu, Record, Lock keypad, Loudspeaker or Handset,and the network services Hold or Unhold, Answer and Decline, New call, Touchtones (to send tone strings), Swap (to switch between the active call and the callon hold), Transfer calls (to connect a call on hold to an active call and disconnectyourself), Conference (to make a conference call that allows up to five persons totake part in a conference call), Add to conference, Private call (to discuss privatelyin a conference call), End call, and End all calls.Do not hold the device near your ear when the loudspeaker is in use, because thevolume may be extremely loud.