Samsung SGH-X427ZSACIN - Manual (Page 110)

Network Services
106
Closed User Group (CUG)
(Menu 6.6)
This network service allows incoming and outgoing calls to
be restricted to a selected user group. You can create up to
ten user groups.
For details on how to create and use a closed user group,
contact your service provider.
Example: A company lends SIM cards to its employees and
wants to restrict outgoing calls to members of the
same team.
Activating a Closed User Group
If you select the Closed User Group menu, you can enter
the CUG function. You can now access the following options
after pressing the Select soft key:
Index List: lets you list, add or delete CUG index
numbers. The list of current CUG indexes appears. Add a
new CUG index as advised by your service provider or
delete a selected group.