Samsung SGH-P107BSACIN - Manual (Page 129)

Network Services
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Caller ID
You can prevent your phone number from being displayed
on the phone of the person being called.
Note:
Some networks do not allow the user to change this setting.
The following options are available:
Default: the default setting provided by the network is
used.
Hide Number: your number does not display on the other
person’s phone.
Send Number: your number is sent each time you make a
call.
Closed User Group (CUG)
This network service allows incoming and outgoing calls
to be restricted to a selected user group. You may be a
member of up to ten user groups. For details on how to
create, activate and use a closed user group, contact our
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 the selected group.