Barring Outgoing Calls -

Outgoing Call Barring Type: Network-Level Security / Parental Control Description: A system that allows the account holder or administrator to restrict specific types of outgoing voice calls from a specific SIM card or extension. When active, the network will terminate any dialing attempt that matches the restricted criteria and play an informative announcement to the caller.

: Disables all dialing capabilities, turning the phone into a "receive-only" device (emergency calls are usually exempt). barring outgoing calls

: Prevents "bill shock" by blocking expensive international or premium-rate calls. barring outgoing calls