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TELCOM BILLING FRAUD
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Please can you guys help me with a place or resources/tutorial/roadmap even a hint, where i can learn Telecom Billing fraud.
IP PBX /PBX hacking and roaming fraud Please im in need because im from 1 of the poorest country in AFRICA 
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You saved me hours of frustration. Much appreciated!
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Freezvon https://freezvon.com/features/voip-calls offers a solution that makes international calls affordable, reliable and simple. VoIP allows you to be independent of your mobile operator, providing access to cheap communication anywhere in the world. This is especially important for companies seeking to minimize costs without losing the quality of communication. The service can be used on both stationary devices and mobile gadgets, and customer support is always ready to help with settings.
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