src/net/java/sip/communicator/service/protocol/media/MediaAwareCall.java
/**
     * Notifies this instance about a change of the value of a specific property
     * from a specific old value to a specific new value.
     *
     * @param ev a <tt>PropertyChangeEvent</tt> which specifies the name of the
     * property which has its value changed and the old and new values
     */
Notifies this instance about a change of the value of a specific property
from a specific old value to a specific new value.

@param ev a PropertyChangeEvent which specifies the name of the
property which has its value changed and the old and new values
Notifies this instance about a change of the value of a specific property from a specific old value to a specific new value . @param ev a PropertyChangeEvent which specifies the name of the property which has its value changed and the old and new values
public void propertyChange(PropertyChangeEvent ev)
    {
        /*
         * Forward PropertyChangeEvents notifying about changes in the values of
         * MediaAwareCall properties which are delegated to
         * MediaAwareCallConference.
         */
        if (ev.getSource() instanceof CallConference)
        {
            String propertyName = ev.getPropertyName();
            if (CONFERENCE_FOCUS.equals(propertyName))
            {
                conferenceFocusChanged(
                        (Boolean) ev.getOldValue(),
                        (Boolean) ev.getNewValue());
            }
            else if (DEFAULT_DEVICE.equals(propertyName))
            {
                firePropertyChange(
                        DEFAULT_DEVICE,
                        ev.getOldValue(),
                        ev.getNewValue());
            }
        }
    }
public void propertyChange ( PropertyChangeEvent ev ) { /*
         * Forward PropertyChangeEvents notifying about changes in the values of
         * MediaAwareCall properties which are delegated to
         * MediaAwareCallConference.
         */ if ( ev . getSource ( ) instanceof CallConference ) { String propertyName = ev . getPropertyName ( ) ; if ( CONFERENCE_FOCUS . equals ( propertyName ) ) { conferenceFocusChanged ( ( Boolean ) ev . getOldValue ( ) , ( Boolean ) ev . getNewValue ( ) ) ; } else if ( DEFAULT_DEVICE . equals ( propertyName ) ) { firePropertyChange ( DEFAULT_DEVICE , ev . getOldValue ( ) , ev . getNewValue ( ) ) ; } } }
Notifies this instance about a change of the value of a specific property
 from a specific old value to a specific new value.
Notifies this instance about a change of the value of a specific property from a specific old value to a specific new value .