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Troubleshooting Toll Fraud Prevention
This section describes exception handling.
- If an external user can log in to the PBX, solve the problem according to Preventing Theft of the Administrator Right.
- If a user calls the IVR, performs second-stage dialing as prompted, and successfully makes a call, solve the problem according to Preventing Calls from Being Transferred Through a Trunk and the IVR.
- If an inter-office user dials the intra-office call prefix + inter-office call prefix + toll call number, solve the problem according to Preventing Calls from Being Transferred Through a Trunk and the IVR.
- If a user cannot be registered with the PBX through no-authentication or an IP address not whitelisted, or cannot log in to the self-help service through the default password, solve the problem according to Preventing Registration or Login of Unauthorized Users.
- If the call forwarding service is implemented when call forwarding conditions are not met, solve the problem according to Preventing Unauthorized Call Forwarding.