You can answer a call while you have another call in progress. To activate call waiting (network service), select Menu > Ctrl. panel > Settings and Phone > Call > Call waiting .
To answer the waiting call, press the call key. The first call is put on hold.
To switch between the two calls, select Swap.
To connect an incoming call or a call on hold with an active call and to disconnect yourself from the calls, select Options > Transfer .
To end the active call, press the end key.
To end both calls, select Options > End all calls .