How di remove call barring from nokia 5500d - Nokia 6288 Cellular Phone

Call barring
Call barring (network service) allows you to restrict the
calls that you make and receive with your phone. To
change the settings, you need the barring password from
your service provider.
1 Select Menu > Tools > Settings > Call barring.
2 Scroll to the desired barring option, and to request the
network to set call restriction on, select Options >
Activate. To set the selected call restriction off, select
Cancel. To check whether the calls are barred, select
Check status. To change the barring password, select
Edit barrings passw.. To cancel all active call barrings,
select Cancel all barrings.
Call barring and call diverting cannot be active at the same
time.
When calls are barred, calls still may be possible to certain
official emergency numbers.