Customers who choose to permit international calling from your telephone system, are advised that it is the customer’s obligation to take all necessary measures to ensure against the occurrence of toll fraud. 

Customers are responsible for payment of any charges incurred due to toll fraud, whether known or unknown, and whether or not WTC takes any actions to stop or block toll fraud.  Please note that while WTC reserves the right to block international long distance calling, WTC has no obligation to block international calling or take any other actions.  WTC’s election to block or not block calling on any selected routes shall not impose any liability on WTC or absolve the Customer of any liability for toll fraud caused for any reason.

Choosing to unblock international calling to high risk areas places responsibility on the customer to monitor their calling traffic in order to prevent or stop toll fraud.
This responsibility lies solely with the customer.