Call barring is a telecommunication feature that allows users to restrict certain types of incoming or outgoing calls on their phone lines. It can block calls from specific numbers, prevent outgoing calls to international or premium-rate numbers, or stop all incoming calls during certain times
. This feature is useful for managing phone usage, avoiding unwanted or nuisance calls, controlling phone expenses, and enhancing security and privacy. For example, businesses use call barring to prevent unauthorized international calls and control costs, while individuals might use it to block spam calls or avoid roaming charges while abroad
. Call barring can be activated or deactivated through the phone’s settings or by contacting the service provider. It often requires entering a PIN code provided by the network. The feature is customizable, allowing users to block all calls, only outgoing or incoming calls, or calls to/from certain categories like international numbers
. In summary, call barring empowers users to control who can call them and when, helping to avoid unwanted calls and manage communication more effectively
