How to use options during a call
Many of the options that you can use during a call are network services. For availability, contact your network operator or service provider.
Select Options during a call for some of the following options:
Mute or Unmute; Activate handset, Activate loudsp., or Activate handsfree (if a compatible Bluetooth headset is attached); End active call or End all calls; New call; Conference; Answer; Reject; Swap; Hold or Unhold; and Open active standby.
Transfer — to connect a call on hold to an active call and disconnect yourself
Replace — to end an active call and replace it by answering the waiting call
Send DTMF — to send DTMF tone strings (for example, a password). Enter the DTMF string or search for it in Contacts. To enter a wait character (w) or a pause character (p), press * repeatedly. To send the tone, select OK.
Tip: You can add DTMF tones to the Phone number or DTMF fields in a contact card.
Also see:
How to use speed dialing – Nokia 5500 Sport support
How to use enhanced voice dialing – Nokia 5500 Sport support
How to make a conference call (network service) – Nokia 5500 Sport support
How to answer or reject a call – Nokia 5500 Sport support
How to use call waiting (network service) – Nokia 5500 Sport support

