Samsung SGH-e316 User Manual page 88

♦
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.
Network Services
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