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Configuring Toll Fraud Prevention
You can configure limiting conditions on the PBX to prevent extra expenses due to call fraud.
Plan and configure the service data according
to this document. Otherwise, toll fraud (making international toll
calls or premium-rate telephone numbers bypassing security policies)
may occur, causing economic losses.
- Context for Configuring Toll Fraud Prevention
- Preventing Theft of the Administrator Right
This topic describes how to isolate the public network from the private network, configure the whitelist, and configure the user login right and login authentication for preventing theft of the administrator right. - Preventing Calls from Being Transferred Through a Trunk and the IVR
This section describes how to configure call attributes for a call prefix, call-out right for call transfer through a trunk, maximum number length for the IVR, and call-out right for call transfer through the IVR to prevent inter-office users from making outgoing calls through the PBX or IVR. - Preventing Registration or Login of Unauthorized Users
This section describes how to configure the IP whitelist, configure user password authentication, and change the self-help service password to prevent unauthorized users from registering with the PBX or using the default password to log in to the self-help service to modify data or make a call fraud. - Preventing Unauthorized Call Forwarding
This section describes how to properly configure the call forwarding service to prevent unnecessary call forwarding and save enterprise costs. - Deploying the CDR Server
You can query call fraud information on the CDR server when a fraud occurs. - Verifying the Toll Fraud Prevention Configuration
After the configuration is complete, check whether an inter-office user can log in to the enterprise PBX through the Internet, whether a user makes an outgoing call by calling the IVR or through a trunk, whether an unauthorized user can be registered with the PBX, and whether call forwarding can be implemented when call forwarding conditions are not met. - Troubleshooting Toll Fraud Prevention
This section describes exception handling.