Mobile operators are aware of the terminators landing international traffic. Due to the gateway owners operation, they lose the lion's share of their profits and therefore they are actively fighting this type of business. For this purpose, the operators use specially designed antifraud systems, which are of two types. The first type is analytical programs that compare the activity of a SIM card with the "normal" parameters of a subscriber's activity. The second type is the “robot calls” systems, which we will talk about today.
“Robot calls” systems are used to make the reference calls. By making calls to the numbers that cause suspicion of termination, the operators check the call routes for ‘whiteness’. If the call goes along the “gray route”, the SIM card is immediately blocked. The problem of frequent blocking of cards is the most common cause of disappointment in their business for the beginning terminators. But there is a solution.
GoAntiFraud offers its clients an effective tool for protection against robot calling systems. The numbers from which the operator make calls are blacklisted and are never allowed through by the system again. At the same time, white lists are created, in which secure numbers are entered.
The white and black list tools allow to significantly increase the "lifetime" of the card, but still, no SIM card is everlasting. At some point, the operator will understand that the calls are coming from gsm gateway internet. Therefore, you should understand that you will have to buy the new starting plans from time to time. Your main task is to reduce the frequency of SIM-cards blocking and GoAntiFraud will help you with this.