Ericsson F221m - Manual (Page 25)

Restricting calls (call barring)
You can restrict certain types of calls that can be
made or received. You need a password to turn a call
restriction on or off. Initially, this password will be
0000.
We recommend you to change it by dialing:
**03**OLD_PASSWORD*NEW_PASSWORD*
NEW_PASSWORD#
The following table shows the restriction alternatives
as well as the way to proceed to manage this
function.
Warning!: these dialing sequences may vary
depending on your network operator. If these do not
work, please consult your network operator or check
the user guide provided with your subscription.
24 Advanced features