Samsung SGH-C207CSACIN - Manual (Page 116)

Network Services
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Outside Access: lets you enable or disable calls to
numbers other than those in the Closed User Group. This
feature depends on the nature of your CUG subscription.
Please check with your service provider.
Default Group: you may set a default CUG with your
service provider. If you have done so, you can enable the
Default Group option on your phone. When making a call,
you are given the option of using your default CUG,
instead of selecting one from the list.
Deactivate: deactivates the CUG function. This option
appears only when the default group is enabled or a CUG
index is selected.
To Press the
scroll through the
existing CUG
indexes Up or Down key.
add a new CUG
index Options soft key, select the
Add option and enter the
index.
delete a CUG
index Options soft key and select
the Delete option.
activate a CUG
index Options soft key and select
the Activate option.